Post Office Box 1106, D71301 Waiblingen Post Office Box 29, Mount Holly, N.C.

28120 USA
Phone (+49) 07151/956230 Fax (+49) 07151/956250 Phone (704) 822-2993 Fax (704) 822-1292
E-mail: info @ braun-tacho.de E-mail: BRAUNINST @ aol.com
Internet: www.braun-tacho.de

Manual

E16A313 (with RS232-Interface, Board Mounting)

E16E313 (with RS232-Interface, 19" Rack)

E16A314 (with Profibus-Interface, Board Mounting)

E16E314 (with Profibus-Interface, 19" Rack)

Turbine Overspeed Protection System

with SIL3/IEC61508 Approval

Channel A Channel B Channel C

Generator E1696.31 Monitor E1655.51 Monitor E1655.51 Monitor E1655.51

SIL3/IEC61508 SIL3/IEC61508 SIL3/IEC61508 SIL3/IEC61508

1 Channel A 1 1 1
SP1 SP1 SP1
2 Channel B 2 2 2
RPM RPM RPM
3 Channel C 3 3 3
SP2 SP2 SP2
4 Auto-Test 4 4 4

P P P P
E E E E

Note: Shown is model E16E313

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Contents page
Function Characteristics ............................................................................................................3
System Structure...........................................................................................................................3
Speed Sensors.................................................................................................................................3
System Electronics .........................................................................................................................3
Monitor E1655................................................................................................................................4
Test Generator E1696.....................................................................................................................4
Alarms provided by the system ...................................................................................................4
Overspeed Trip Alarms ..................................................................................................................4
Channel Warning Alarms ...............................................................................................................4
System Failure Alarms ...................................................................................................................4
E1655 Modules..............................................................................................................................5
Overspeed Setpoint (SP1)...............................................................................................................5
Sensor Failure Monitor...................................................................................................................5
Sensor Pulse Train Comparison......................................................................................................5
Low Speed Check (SP2).................................................................................................................5
External Trip Input .........................................................................................................................6
Sensor Signal Input.........................................................................................................................6
Sensor Signal Repeater...................................................................................................................6
Testing ...........................................................................................................................................7
E1696 Generator.............................................................................................................................7
Automatic test routine ....................................................................................................................7
Watchdog function .........................................................................................................................8
Failure signals ................................................................................................................................8
Display and Keys of E1696 ............................................................................................................9
Error-Messages of E1696 .............................................................................................................10
Display and Keys of E1655 ..........................................................................................................11
Error-Messages of E1655 .............................................................................................................11

Programming of the modules ....................................................................................................12

Access to parameters ....................................................................................................................12
Parameter Listing of E1655 ..........................................................................................................13
Parameters of E1655.....................................................................................................................14
Parameter Listing of E1696 ..........................................................................................................19
Parameters of E1696.....................................................................................................................19

Function Diagram.......................................................................................................................24
Rear View ....................................................................................................................................25
Wiring Diagram..........................................................................................................................26

Electrical Specifications .............................................................................................................27

Dimensions of E-Version (19" Rack) ........................................................................................28
Dimensions of A-Version (Board Mounting)............................................................................30
Summary of Versions and Spare Part Recommendation........................................................31

Revision Notes .............................................................................................................................32

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Function Characteristics 3 channel structure with
Turbine Speed Monitoring against overspeed with redundancy by 3 independent monitoring
independent channels. modules
Each channel equipped with photo-relay trip output.
each channel with trip output
Function Test Facility with discrete selection by external signals, or automatic
test routine with watchdog and system failure warning. options for externally controlled
test or automatic test routine
Each channel has its own comprehensive measurement and alarm section,
realized by a Monitor Module in each channel. Measurement is based on the
fast responding digital pulse interval principle with automatic floating number
of periods. Inputs include sensor monitoring. Each of the three Monitor
Modules has a photo-mos relay output (breaking overspeed trip circuit). Any
failure of sensor or measuring function detected also sets the trip output to
overspeed position. Further, each channel releases its own failure warning
signal, free available to the periphery as N/C contact.

The overall response to an overspeed condition is shorter than 10 millisec fast response to overspeed
(plus 1 pulse interval of the input pulse train).
To signalize the channel response to the automatic test procedure a return
signal from an external device must be fed back into the system. If not duly
responded, the test module will release “System Failure” warning alarm.

Each module within the system has its own data port at the front, usable for
Data interface facility
the configuration of the module, and also for data calling. Available as RS232
(standard) or as PROFIBUS DP Interface.

System Structure
(see also function diagram)
Speed Sensors Non-contact speed sensing
3 Hall-Effect based speed sensors series A5S... are placed at the turbine shaft
for a non-contact sensing of its rotational speed. Milled slots in the shaft, or a
pole wheel, form a profile to generate a pulse frequency corresponding to the
speed. The sensors have an incorporated signal amplifier providing an
adequate signal level for the transmission to the E16 Electronics.
System Electronics The System and
The E16 Electronics includes 3 Monitor Modules E1655, one each for each its Modules
channel A, B, C. Further, 1 Test Generator Module E1696.
They are plugged into a card file, which is ready wired to perform the
monitoring function. Terminal strips connect to the periphery.

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Monitor E1655 Functions included into the
This module provides: Monitor module E1655.
Sensor circuit monitoring and sensor signal lead monitoring, sensors pulse
train comparison. Detailed description on
Sensor signal repeating output. following pages
Digital speed measurement with display in RPM terms.
Overspeed trip setpoint (SP1) opto-relay output,
also offering the facility of an external alarm control.
Low end setpoint (SP2) to perform the plausibility check,
with starter facility.
“channel warning alarm” relay output
"sensor failure alarm" relay output.
All functions are digital, with 5 digits resolution and accuracy of
+ 0.01% + 1 in the last digit.
Parameters are programmable from the front keys (with access lock), or via
data interface.
Test Generator E1696 Functions included into the Test
This module provides: Module E1696
Adjustable frequency generator to substitute the sensor signal under test
condition, with display in RPM terms. Detailed Description on
Channel test selection by external control, or automatic test cycle with following pages
“System Failure” outputs.

Alarms provided by the System

Overspeed Trip Alarms
The trip alarm of the monitor module E1655 within each channel will be conditions for channel trip
released under one or more of these conditions: alarm
1. overspeed setpoint (SP1) exceeded,
2. sensor failure detected (supply and signal lead monitor),
3. sensor signal voltage failure deteected (only at zero speed)
4. sensor pulse train discrepancy detected,
5. low end setpoint (SP2) not exceeded after starter phase,
6. external alarm control actuated
7. self test failure

Channel warning alarm

This signal contact, available from each channel to the periphery, breaks under conditions for channel
one or more of these conditions: warning alarm
1. overspeed setpoint (SP1) exceeded (if programmed).
2. external trip control actuated,
3. low end setpoint (SP2) not exceeded after starter phase
4. sensor pulse train discrepancy detected
5. self test failure of a neighbor channel.

Sensor failure alarm conditions for sensor failure

This signal contact, available from each channel to the periphery, breaks under alarm
one or more of these conditions:
1. sensor failure detected (supply and signal lead monitor),
2. sensor signal level failure detected.

System Failure warnings see section Automatic Test

The System Failure Alarms 1 and 2 , available as (N/C) contact will be Cycle for details of System
signalized if one of the channels does not duly respond to the test procedure. failure warnings

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The E1655 Modules
Alarms and Checks performed
Overspeed Setpoint (SP1) details of the overspeed alarm
The overspeed setpoint SP1 can be programmed to any speed level, in terms (SP1)
of RPM. Its setting can be called to display. Further programmable are the
hysteresis width, and the event memory. If not memorized, the signal returns
to “no excess” with the measurement decreasing below setpoint (minus
hysteresis), otherwise it must be cancelled by an external acknowledge signal.
Sensor Failure Monitor Sensor Failure Monitor
This function includes 2 sections, the sensor supply monitor and the sensor
signal lead monitor. Both have certain preconditions, as explained below.
They are met by all BRAUN sensors of series A5S... with push/pull output
stage, possibly not by others. Check the sensor data sheet for validity. If not
applicable, disengage the function.
The supply monitor checks the current drain, and the voltage of the sensor
supply lead. Thereby it detects a break as well as a short circuit in the sensor
connection. Obviously, this requires a sensor with adequate power
consumption (>7ma).
The sensor signal lead monitor checks the level of this input to be either
definitely on high or on low level, as a push/pull output is, if not broken. As
primarily intended to monitor the signal lead in standstill state, the function
automatically disengages when the sensor supplies a signal frequency.
A failure thus detected will be memorized or not, as programmed.
Sensor Pulse Train Comparison
This function checks for proper sensor signals during run of the machine. Active sensor signal check
Each monitor Module E1655 compares the pulse train delivered from its own
sensor to those of its both neighbor channels. If they differ, the monitor finds
its own sensor to be faulty. This checks performs at any frequency, and does
not depend on a speed measurement.
Low Speed Check (SP2) Low speed alarm checks for full
If the speed measurement drops below the (programmable) setpoint SP2 of the performance
Monitor Module during operation, from whatever reason, a failure will be
signalized. A very comprehensive check, including sensor and measurement
function.
The level SP2 will be set at the low speed end, to 30 % for instance. For start-
up, it will be overrun by the starter function of the E1655 module, activated by
an auxiliary contact from the machine control, and held for a programmable
period of time (0...999 sec) after its end.
This alarm is programmable to be memorized or not, or to be disengaged.

Display
The numerical display of the E1655 module serves as a programming aid (if
not programmed by the data interface), indicating the program group number,
the step number, and the parameter addressed.
When not in the programming phase, the display reads the actually measured
speed, in terms of RPM or any other desired unit (also during the test phase).
By pushbuttons, the setpoints SP1 and SP2 can be called (but not modified
that way).
By red and green LEDs, the module indicates its alarm conditions for SP1 and
SP2.

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External Trip Input
In addition to the alarm and failure conditions as described before, the trip Trip release by external
alarm may also be released by an external binary signal. This feature allows to signal
include a condition from outside the speed monitor into the trip release, maybe
a temperature signal, or a pressure contact. The high/low level for the response
of this control input is adjustable.

Sensor Signal Input Sensor signal input

The input accepts and feeds preferably 3-leads sensors, as BRAUN sensor
series A5S.. with p/p output. Others may give restrictions, in frequency range,
transmission distance, and the safety checks that can be performed.
By a control signal from the Test Generator Module, the monitor input is
switched to a second input, which receives the test frequency as emitted from
the Test Generator.

Sensor Signal Repeater Isolated sensor signal

This isolated output repeats the signal as received from the sensor to the repetition
periphery. Feeds for instance a speed controller, or external display. The
output is firmly tied to the sensor signal of the specific channel, not affected
when the monitor is switched to the test frequency.

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Testing with E1696 Test Generator Module
Externally controlled test procedure
The E1696 provides a test frequency to be switched to the channels A, B, C of
the system, one after the other, by means of external (DC) control signals. externally controlled test
This frequency can be set (in terms of RPM) at the test generator, and then procedure
tuned up and down by pushbutton. The front display reads the actual
frequency.
3 control inputs to the system are assigned to the 3 channels A,B,C. The one
input held high switches its channel to test, substituting the sensor signal by
the frequency of the test generator. Note: the repeater output of the module
remains with the sensor input, not affected by the test procedure. The control
inputs are locked against each other, to prevent of inadvertently switching 2 or
3 channel to test at the same time (this protection can be disengaged by
program).
The channel under test reads the test frequency as received and measured at its
numerical display (by RPM). If it exceeds its setpoint, it will signalize
overspeed by its alarm output and LED display. The force guided contact of
an external voting alarm relay returns the reaction to the test generator. system reaction to externally
No signal however is released to the periphery about the test result. controlled test

Automatic Test Routine regularly performed

The Test Module repeats the automatic test routine with an adjustable time automatic test routine:
interval (1 ... 9 999 min). checking the response of all
The test routine itself is performed in three steps. With each step, the three channels to 2 test frequencies
monitors are tested subsequently.
Step one:
Simulated test speed 1 (n >SP1, feedback of external device must be trip),
Step two:
Simulated test speed 2 (n <SP1, feedback of external device must be no trip),
Step three:
Forced trip (n <SP1, feedback of external device must be trip).
During step three, the monitor receives test speed 2.
safety maintained after failure in
If measurement and alarming serve duly, the Monitor Module under test must
one channel
release its trip alarm with step 1 at simulated test speed 1, but must not with
step 2 at simulated test speed 2.
With step 3 the forced trip input of the monitor is tested. At step 3 each
monitor is switched to simulated test speed 2 (below overspeed) but the
external device must feed back the trip signal.
The Test Module checks for a corresponding response. It is returned from an
external device actuated by the channel trip output.
With an incorrect response from a channel, the routine immediately interrupts
(to prevent the entire system of an unfounded overspeed trip alarm to the
machine) and a system failure signal is released.
The Test Module throws the faulty channel into its overspeed condition (by
means of the forced trip input). Thus, the overspeed safety is maintained – the
system now responds with a 1 of 2 characteristics, in other words, if just one
other channel detects overspeed or an internal fault, the turbine will be shut
down.

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Watchdog Function
The watchdog section on the E1696 module performs an identical test step watchdog checks for correct
sequence, independent from the above but in close synchronism. If both, test stepping sequence
routine and watchdog are not at the same step at the same moment, system and crosschecks trip signals
failure is signalized. But more, the above mentioned measure of forcing a
faulty channel to its overspeed condition also requires the said coincidence
between routine cycle and watch dog. In other words, the measure is taken
only if the stepping sequence up to this moment was correct. This prevents the
system from an unfounded overspeed alarming, and thus further increases the
reliability, and the availability of the machine.
Incorrect stepping however generates a warning, by the System Failure alarm
output, which should immediately be observed.
Failure signals to the periphery system failure signals
The Test Generator Module E1696 provides failure signals (1) and (2), as N/C from test and watchdog
relay contacts, de-energized to announce a failure, also with power supply section
missing.
Both respond to an alarm from one or more of the channels A,B,C, and to a
failure detected in the testing sequence, or to an incorrect performance of one
of the Monitor Modules during test.

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Display and Keys of E1696

Generator E1696

Display of test speed (and parameters)

During auto test sequence
LED1: flashing = channel A is tested (n<SP1) 1 Channel A
On = channel A signalizes trip (n>SP1) LEDs for indication of
2 Channel B
LED2: flashing = channel B is tested
test status 3 Channel C
On = channel B signalizes trip
LED3: flashing = channel C is tested 4 Auto-Test
channel C signalizes trip
LED4: On = Auto-Test-Mode active
Off = Manual-Test-Mode active Keys for operation
P
E

Data interface

In normal operation the display reads:

With key the value of test speed 1,
with key the value of test speed 2.
With keys and depressed : the remaining time (XXXX.X minutes) until the next auto test sequence is started

Start of an auto test sequence

An auto test sequence can be manually started by depressing keys and .

Reset of latched alarms with key .

Display (error) messages refer to next page.

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Error-messages of test generator E1696
During normal operation:
Error-Messages from E1696
C0-E1 : channel A signalizes trip, B and C not
(C = Check, E = Error)
C0-E2 : channel B signalizes trip, A and C not
C0-E3 : channel A and B signalize trip, C not
C0-E4 : channel C signalizes trip, A and B not
C0-E5 : channel A and Csignalize trip, B not
C0-E6 : channel B and C signalize trip, A not

During an auto-test-sequence:
C1-E1 : incorrect feedback of channel A at simulated test speed 1
C2-E1 : incorrect feedback of channel B at simulated test speed 1
C3-E1 : incorrect feedback of channel C at simulated test speed 1
C1-E2 : incorrect feedback of channel A at simulated test speed 2
C2-E2 : incorrect feedback of channel B at simulated test speed 2
C3-E2 : incorrect feedback of channel C at simulated test speed 2
C1-E3 : incorrect feedback of channel A at test of forced trip
C2-E3 : incorrect feedback of channel B at test of forced trip
C3-E3 : incorrect feedback of channel C at test of forced trip
C9-E1 : channel A not ready for test
C9-E2 : channel B not ready for test
C9-E3 : channel A and B not ready for test
C9-E4 : channel C not ready for test
C9-E5 : channel A and C not ready for test
C9-E6 : channel B and C not ready for test
C9-E7 : channel A, B and C not ready for test

Other display-messages
FC-1 : test of forced trip FC = Function Check

SELF : E1696 performs a self test routine (subsequent to each auto test
sequence)

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Display and keys of E1655

Monitor E1655

Display of turbine speed (and

parameters)

LEDs for status indication 1

LED1 on: Trip SP1
2
LED2 on: no Trip RPM
LED3 on: n > SP2 resp. starter function 3
SP2
LED4 on: n < SP2 4

Keys for operation P

Data interface E

In normal operation the display reads

With key the value of SP1,
with key the value of SP2.

Error messages
(SE = Selftest-Error, CE = Check-Error)
SE-01: sensor supply failure or sensor lead failure,
SE-02: pulse train difference,
SE-03: SE-1 and SE-2 simultaneously,
SE-04: low end failure,
SE-05: SE-1 and SE-4 simultaneously,
SE-06: SE-2 and SE-4 simultaneously,
SE-07: SE-1, SE-2 and SE-4 simultaneously.
SE-10 : test speed of generator = zero (= failure of test generator)
or
test time exceeds 10 minutes (= failure of test generator)
or
neighbour channel signalizes permanent self test (= failure of neighbor channel)
SE-20 : neighbour channel fails to produce self test within 5 hours time of operation (= failure of neighbor channel)
CE-1 : monitor switched to forced trip by E1696

Reset of latched alarms with keys and .

Other display-messages :
(FC = Function Check)
FC-1 : test of forced trip by E1696
FC-2 : external trip control actuated
SELF : self test of monitor (periodically repeated after each 2 hours)

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Programming of the modules

Access to parameters

Principle: Select a Parameter by it's "Name" Pgg.ss,

where gg = Parameter- Group-No. and
ss = Step-No. within Group,
then verify the value and change it according the application

Programming:
To enter the programming phase, press both keys and simultaneously; instead
of normal display, P00.00 will be shown.
Select group- or. step-no. with keys , .
Toggle between group- and step-range with key .
Show parameter's value with key .
Select (move ) active digit with key .
Adjust figure in active digit with keys , .
Acknowledge with key , Cancel (old value still valid) with key .
Return to normal operation with key

Example: change value of parameter P01.01 from 2386 to 2387 or 2385:

Display while Programming

Normal active digit(s) flashing (shown underlined here)
Display
Select Select Change
Toggle Group Toggle Step-No. Toggle Parameter-value
with with with
key(s) key key

P E

E = Enter
or
P = Cancel
P

Enter = new, changed value is valid

P + E
Cancel = original value still valid
Move active
digit with
P

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Parameter listing of Monitors E1655:

Summary of programming steps and their initial parameters (default values) as set on delivery

program- data set on delivery

Step No. parameter function (initial data)

P00 .00 access code request 0000

.01 new code figure 0000
.02 lock status (1 = unlocked, 0 = locked) 1 = unlocked

P01 .00 input: scaling decimals of input signal frequency 0 = none

.01 value of nominal input frequency (Hz) 10000
.02 decimals of corresponding speed 0 = none
.03 corresponding speed (unit as desired) 10000
.04 low end of speed range 00001

P02 .00 zeroed LSDs in display 0 = none

.01 display updating sequence (X.X sec) 0.3 (sec)
.02 time elapse of starter phase (XXX sec) 000 (sec)
.03 truth-level of external trip signal (0 = low, 1 = high) 1 = high
.04 sensor monitoring (0=off,1=on,2=on,latched) 1 = on
.05 mode of sensor monitoring (0=none,1=current,2=voltage,3=both) 1 = current
.06 lowspeed monitoring (0=off,1=on,2=on,latched) 1 = on
.07 sensor signal deviation monitoring (0=off,1=on with trip, 2=on with alarm) 0 = off
.08 reset interval of deviation counters (1....9999 pulses) 1000
.09 allowable deviation between counters (0...99 pulses) 50
.10 limit of error counter (1...99 deviation detections) 5
.11 warning alarm at overspeed (0=no,1=yes,2=yes and at test overspeed) 1 = yes

P03 .00 setpoint (SP1) in unit as programmed for display 10000

.01 hysteresis bandwidth SP1 (XX.X % of SP1) 05.0 (%)
.02 alarm to be latched (0=no, 1=yes) 0 = no

P04 .00 setpoint (SP2) in unit as programmed for display 00100

.01 hysteresis bandwidth SP2 (XX.X % of SP2) 05.0 (%)
.02 alarm to be latched (0=no, 1=yes) 0 = no

P05 .00 hardware address added to device address (0=no,1=yes) 0 = no

.01 device address (range 1...125) 001

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Parameter Group P00.xx of E1655:
Data Access, Password

Key figure to access

Programming access to all parameters can be locked by a password number.
If not properly served, the parameters may be called to display but not Step P00.00:
varied. If not properly served, the display reads -E1-,and any programming Code figure to access
in a later program step will be rejected.
Note:
If the knowledge of the password number went lost it may be recalled to
display by a procedure, as described in a separate sheet K0-095 (not
included into these instructions). The code figure then appears by 4 digits.

In a subsequent program step, a new code may be established, substituting Step P00.01:
the one previously valid. new code figure

The key function may be disengaged by a next program step. With Step P00.02:
authorized access, set parameter to 1 in step No .02, to generally unlock the unlock access key
key. This may prove practical during the installation phase to facilitate the
adjustments. Once installed, the key function should be reactivated, by
programming parameter 0 in this step.

Parameter Group P01.xx of E1655:

Measurement Configuration, Scaling Input

Scaling defines the relation between the input signal frequency (in terms of scaling input
Hz), and the corresponding display (in terms of RPM). Both values are
freely programmable by their decimals and numerical amount. Of course, signal frequency (Hz):
they must refer to the same operation level. This reference point is Step P01.00 =
recommended close to the high end of the intended operation range. In later number of decimals,
operation however, it may be overrun without error. Step P01.01= value.
Scaling Example
The speed is measured by a contactless probe scanning a gear wheel on the
corresponding value of rpm:
turbine shaft with 90 teeth.
Step P01.02 =
Thus, a speed of 3000 rpm results in a signal frequency of 3000x90:60 (Hz)
number of decimals,
= 4500 (Hz). With this as the reference level, the following parameters are to
Step P01.03 = value
be set:
Step P01.00 parameter 0 (= no decimals)
P01.01 parameter 04500
P01.02 parameter 0 (= no decimals)
P01.03 parameter 03000

Low end for shut-off

If the speed falls lower than this level, the measurement will be cancelled to Step P01.04
zero. low end of
The low end is programmed by the same terms, as defined for the speed by operating range
steps P01.02 and P01.03.

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Parameter Group P02.xx of E1655:
Display, Starter time, Failure Monitoring

LSDs on zero
If the display of the speed uses 4 or more digits the lesser significant digits Step P02.00:
(LSD) may appear fluctuating. To avoid irritations by not significant digits, zeroing LSDs
a number of them may be permanently kept at zero.
Set the parameter to the number of LSDs to be kept on zero.

Display updating sequence

Independent from the response time used for other functions, the display Step P02.01:
may have its own up-dating sequence - again in the interest of stabilized and display updating
well legible readings. Set the parameter to the time in steps of 0.1 sec.
A recommended value is 0.3 sec.

Starter time period Step P02.02:

This step sets the starter time period (elapse). Starter phase state for SP2 starter time elapse
lasts from the beginning of the external starter signal plus the programmed
time elapse following its end. Range 000...999 sec.

Truth level of External Trip Signal Step P02.03:

To match the control source, and specific safety aspects, the parameter of Truth level of
this step defines either high or low signal level to make the condition true. External Trip Signal
parameter
0 : high = control true
1 : low = control true

Enable/Disable of sensor failure detection Step P02.04:

Sensors without power supply (for example inductive sensors) cannot be Monitoring of sensor
monitored against failure.
parameter
If the sensor is monitored, it is possible to latch a failure alarm until it is
0 : off
reset.
1 : on, alarm not latched
2 : on, alarm latched

Mode of sensor monitoring Step P02.05:

The sensor can be monitored versus current drain (alarm if current drops Mode of sensor monitoring
below 7 mamps or exceeds 150 mamps) and/or signal voltage level during
parameter
zerospeed of the turbine.
0 : no monitoring
Note:
1 : current monitoring
Signal voltage level monitoring only possible with BRAUN sensors with
2 : voltage monitoring
incorporated push/pull output (series A5S...).
3 : current and voltage

Lowspeed monitoring (n < SP2) Step P02.06:

The lowspeed monitoring can be switched off. If the lowspeed monitoring is lowspeed monitoring
enabled, the speed of the turbine must exceed SP2 (after starter time has
parameter
elapsed).
0 : off
1 : on, alarm not latched
2 : on, alarm latched

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Sensor Pulse Train Comparison Step P02.07:
Purpose of this function: sensor pulse train comparison
• Detection of a faulty position of the sensor (clearance to big or wrong on/off
angular position) during starter phase of the turbine (n<SP2).
parameter
• Deviation detection of the sensor signals during normal operation of the 0 : off
turbine (n>SP2). 1 : on, with deviation = trip and
Function principle: alarm
The pulses of all three sensors are counted in each monitor. The main sensor 2 : on, with deviation = only
of the monitor is detected as faulty if the main counter deviates from both alarm
neighbor counters. The allowable deviation between the counters is Step P02.08:
adjustable. number of pulses for reset of
The counters are periodically reset after an adjustable number of pulses or if pulse counters
a fault is detected. range 0001 to 9999 pulses
Subsequent counter evaluations that indicate a faulty sensor increase an error
counter. This counter is reset by a evaluation that indicates a proper working Step P02.09:
sensor. If the error counter exceeds a adjustable limit, the alarm is released. allowable deviation between
Programming steps for deviation monitoring: counters until error counter is
Step P02.07 : 0 = monitoring off increased
1 = Monitoring on, detected deviation releases trip and channel range 01 to 99 pulses
warning alarm
2 = Monitoring on, detected deviation releases only channel Step P02.10:
warning alarm (this setting is recommended) limit of error counter until alarm
is released
Step P02.08 : number of pulses for periodically reset of counters range 01 to 99
(range from 1 to 9999 pulses)
Step P02.09 : allowable deviation between counters (range 1 to 99 pulses)
Step P02.10 : limit of error counter
(range from 1 to 99)

Example:
P02.07 set to 1 (monitoring on, deviation = trip + alarm)
P02.08 set to 1000 (counters will be reset after 1000 pulses, of any sensor)
P02.09 set to 50 (allowable deviation of 50 pulses within 1000 pulses)
P02.10 set to 5 (5 subsequent error detections until alarm is released)
With above settings a non operational main sensor will be detected after 250
pulses of the other two sensors (5 error detections after 50 pulses).

Warning alarm at overspeed condition Step P02.11:

It can be programmed whether the warning alarm will be released at a real warning alarm at overspeed
overspeed condition or additionally at a test overspeed condition.
parameter
0 : no
1 : yes, only at real overspeed
2 : yes, at real and test over-
speed

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Program Range P03.xx of E1655:
Defining the Overspeed Alarm SP1

Overspeed setpoint Step P03.00:

The setpoint SP1 is programmed in the same terms (rpm) as selected for the overspeed setpoint
display of the speed (in step P01.03).

Alarm Hysteresis
The hysteresis is the margin between condition "excess" (>) and "no excess" Step P03.01:
(<), defined by its bandwidth.. The hysteresis bandwidth is set as a band width of hysteresis of SP1
percentage of the setpoint. Setting in step P03.01.
The position of the hysteresis is firm at below the setpoint.

Example:
At a setpoint of 10000 rpm and a hysteresis of 5%, an overspeed alarm is
released at a speed exceeding 10000 rpm and is reset at a speed less than
9500 rpm.

Overspeed alarm latched Step P03.02:

An overspeed alarm can be latched overspeed alarm latched
parameter
0 : no
1 : yes

Program Range P04.xx of E1655:

Defining the Lowspeed Alarm SP2
Lowspeed setpoint Step P04.00:
The setpoint SP2 is programmed in the same terms (rpm) as selected for the lowspeed setpoint
display of the speed (in step P01.03).

Alarm Hysteresis
The hysteresis is the margin between condition "excess" (>) and "no excess" Step P04.01:
(<), defined by its bandwidth.. The hysteresis bandwidth is set as a band width of hysteresis of SP2
percentage of the setpoint. Setting in step P04.01.
The position of the hysteresis is firm above the setpoint.

Example:
At a setpoint of 100 rpm and a hysteresis of 5%, a lowspeed alarm is
released at a speed of less than 100 rpm (not in starter state) and is reset at
speed exceeding 105 rpm

Lowspeed alarm latched Step P04.02:

A lowspeed alarm can be latched lowspeed alarm latched
parameter
0 : no
1 : yes

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Parameter Group P05.xx of E1655:
Defining Data Interface Parameters (only relevant for PROFIBUS)
Further details of Profibus-Interface see instructions I E16Pro1e.
Step P05.00:
Slot position address added/not added to device address hardware address added to
Each slot for the monitors has a hardware wired address adder on the P05.01
backplane:
L09 (monitor channel A) : address 1 parameter
L17 (monitor channel B) : address 2 0 : no
L25 (monitor channel C) : address 3 1 : yes
It is programmable that the programmed address in step P05.01
automatically increases by this channel specific adder No.
Thus, the entire system with all monitors and the testgenerator of one rack step P05.01:
(including the spare parts) can be set to the same basic adress. device No

Example:
P05.01 system address set to 92
Test generator has address 92
Monitor channel A (slot L09) has address 93
Monitor channel B (slot L17) has address 94
Monitor channel C (slot L25) has address 95

For the operation of the Profibus-Iinterface each device must have an

address, range from 001 to 125. The address is set in step P05.01.

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Parameter listing of Test Generator E1696:

Summary of programming steps and their initial parameters as set on delivery

program- data set on

delivery
Step No. parameter function (initial data)
P00 .00 access code request 0000
.01 new code figure 0000
.02 lock status (1 = unlocked, 0 = locked) 1 = unlocked

P01 .00 scaling: decimals of signal frequency 0 = none

.01 value of nominal signal frequency (Hz) 10000
.02 decimals of corresponding variable 0 = none
.03 corresponding speed (RPM) 10000

P02 .00 simultaneous test of two channels possible (0=yes,1=no) 0 = yes

.01 automatic resume of auto-test after monitor failure alarm (0=no,1=yes) 0 = no
.02 repeating time period of auto-test-sequence (1...9999minutes) 10
.03 test mode (0 = automatic, 1= external) 0 = automatic
.04 simulated test speed 1 (RPM) 11000
.05 simulated test speed 2 (RPM) 09000

P03 .00 device No (for Profibus-Interface) 001

Parameter Group P00.xx of E1696:

Data Access, Password (identical to Monitors E1655)

Key figure to access

Programming access to all parameters can be locked by a password number.
If not properly served, the parameters may be called to display but not Step P00.00:
varied. If not properly served, the display reads -E1-,and any programming Code figure to access
in a later program step will be rejected.
Note:
If the knowledge of the password number went lost it may be recalled to
display by a procedure, as described in a separate sheet K0-095 (not
included into these instructions). The code figure then appears by 4 digits.

In a subsequent program step, a new code may be established, substituting Step P00.01:
the one previously valid. new code figure

The key function may be disengaged by a next program step. With Step P00.02:
authorized access, set parameter to 1 in step No .02, to generally unlock the unlock access key
key. This may prove practical during the installation phase to facilitate the
adjustments. Once installed, the key function should be reactivated, by
programming parameter 0 in this step.

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Group P01.xx of E1696:
Scaling the Generator
Scaling defines the relation between the signal frequency (in terms of Hz),
and the corresponding display (in terms of rpm). The values for the steps Step P01.00:
P01.00 through P01.03 have to be set identical to the steps P01.00 through Decimals for input frequency
P01.03 of modules E1655.
Step P01.01.
Example: Signal frequency at reference
A signal frequency of 4500 Hz corresponds to a speed of 3000 RPM.
Program as follows: Step P01.02:
in step P01.00 parameter 0 decimals for display
in step P01.01 parameter 04500
in step P01.02 parameter 0 Step P01.03:
in step P01.03 parameter 03000 speed value at reference

Group P02.xx of E1696:

Adjustments for test mode

Protection against inadvertent overspeed trip during manual test phase Step P02.00:
If two or three channels are switched to test simultanously, the system will Protection against inadvertent
release an overspeed trip alarm. As a protection against an inadvertent overspeed trip during manual
release the channels can be locked against each other. If the lock is enabled, test phase
it is not possible to switch more than one channel to test at the same time. If
two or three channels are selected at the same time, no test occurs at all.
Setting in step P02.00:
Parameter 0 : simultanous test of two channels possible (overspeed trip)
Parameter 1 : simultanous test not possible
Automatic resume of auto-test after failure alarm of monitor Step P02.01:
If an monitor alarm occurs, the auto-test is inhibited and the system failure Automatic resume of auto-test
alarms 1 and 2 are released. With parameter 0 in step P02.01 the system 0 = no
failure alarm must be externally canceled, with parameter 1 it resets 1 = yes
automatically (as soon as the monitor alarm is no longer present) and the
auto- test performance is resumed.
Time repeating period inbetween auto-test –sequences Step P02.02:
The time is adjustable from 1 to 9999 minutes. Time repeating period
inbetween auto-test-sequences
Range 1 to 9999 minutes
Manual external or automatic test mode Step P02.03:
On manual test mode the channels are selected to test by an external control Manual or automatic test mode
signal. The simulated test speed is adjustable at the generator by the front
keys. Parameter
On auto test mode the programmed simulated test speed 1 and simulated test 0 : automatic test mode
speed 2 are active. 1 : manual external test mode

Simulated test speed 1 and simulated test speed 2 Step P02.04:

Simulated test speed 1 must be set to a value above the trip setpoint (SP1 of Simulated test speed 1
E1655), simulated test speed 2 must be set to a value below the trip setpoint
SP1. Step P02.05:
Example: Simulated test speed 2
SP1 of E1655 is set to 3300 RPM
Simulated test speed 1 is set to 3350 RPM,
Simulated test speed 2 is set to 3250 RPM.

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Parameter Group P03.xx of E1696:
Defining Data Interface Parameters (only relevant for PROFIBUS)

For the operation of the Profibus-Iinterface each device must have an Step P03.00:
address, range from 001 to 125. The address is set in step P03.00. Device No

Further details of Profibus-Interface see instructions I E16Pro1e.

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Customized Specific Adjustments

Monitors E1655
program adjustment adjustment comments
step No on delivery on installation

P00 .00 0000 ______ ____________________________________________________

.01 0000 ______ ____________________________________________________
.02 1 ______ ____________________________________________________

P01 .00 0 ______ ____________________________________________________

.01 10000 ______ ____________________________________________________
.02 0 ______ ____________________________________________________
.03 10000 ______ ____________________________________________________
.04 00001 ______ ______ ________________________________________

P02 .00 0 ______ ______ ________________________________________

.01 0.3 ______ ______ ________________________________________
.02 000 ______ ______ ________________________________________
.03 1 ______ ______ ________________________________________
.04 1 ______ ______ ________________________________________
.05 1 ______ ______ ________________________________________
.06 1 ______ ______ ________________________________________
.07 0 ______ ______ ________________________________________
.08 1000 ______ ______ ________________________________________
.09 50 ______ ______ ________________________________________
.10 5 ______ ______ ________________________________________
.11 1 ______ ______ ________________________________________

P03 .00 10000 ______ ______ ________________________________________

.01 05.0 ______ ______ ________________________________________
.02 0 ______ ______ ________________________________________

P04 .00 00100 ______ ______ ________________________________________

.01 05.0 ______ ______ ________________________________________
.02 0 ______ ______ ________________________________________

P05 .00 1
.01 001

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Test generator E1696

program adjustment adjustment

step No. on delivery on installation comments

P00 .00 0000 ______ ________________________________________________

.01 0000 ______ ________________________________________________
.02 1 ______ ________________________________________________

P01 .00 0 ______ ________________________________________________

.01 10000 ______ ________________________________________________
.02 0 ______ ________________________________________________
.03 10000 ______ ________________________________________________

P02 .00 0 ______ ________________________________________________

.01 0 ______ ________________________________________________
.02 0010 ______ ________________________________________________
.03 0 ______ ________________________________________________
.04 11000 ______ ________________________________________________
.05 09000 ______ ________________________________________________

P03 .00 001 ______ ________________________________________________

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Electrical Specifications

Sensor signal
inputs Isolated
Response level: on = 7.0 V ; off = 3.0 V
Maximum input frequency: 50kHz
Minimum pulse width: 10 microseconds
Input impedance: 3,3kohms
Maximum signal level: 50Vss
Sensor supply: approx. 11 V
Sensor circuit monitoring:
Short circuit detection if sensor current > 150 mamps
Open circuit detection if sensor current > 7 mamps

Control signal
inputs Reference : -pole of system power supply
Response level: on : 18...33 volts (typical 24V/8mA)
off : < 3 volts or open input
Minimum time until signal is read true: 50 milliseconds

Relay outputs
(n/c) Breaking capacity ..................... voltage min 10 mv, max 250 v AC/DC
current min. 10 ua, max 2 amp AC, 1 amp DC
power rating max 100 W, 250 VA into ohmic load only.
Inductive load must be equipped with spark extinguisher

Opto-Relay Trip Outputs trip : output low (high impedance)

no trip : output high (level approx system power supply),
maximum load 50 mamps

Sensor signal Isolated , push/pull-output

repeating outputs Output level : high = approx 24 volts, low = 0 volts

System-
Power supply 3x 24 volts dc (18..33v), each approx. 0.5 amps

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Turbine Overspeed Protection Systems
Series E16X3xx
Summary of Versions

Key to System Nomenclature E16X3xx

Design Functions included

A= as board mounting block, as per tables below
access to terminals from front side (each version available in
E= as 19 in rack file, any design A or E)
access to terminals from rear side

Systems with 2-of-3 voting circuit incorporated, two breaking trip contact outputs:
System No Test Function Type Data Modules incorporated
Interface
E16X301 external control only RS 232 3 ea. E1655.41 + 1 E1696.21
E16X302 external control only PROFIBUS 3 ea. E1655.42 + 1 E1696.22
E16X303 Automatic Test Routine RS232 3 ea. E1655.41 + 1 E1696.31
E16X304 Automatic Test Routine PROFIBUS 3 ea. E1655.42 + 1 E1696.32

Systems with 3 trip outputs from each channel for external voting, as OptoSwitches:
System No Test Function Type Data Modules incorporated
Interface
E16X311 external control only RS 232 3 ea. E1655.51 + 1 E1696.21
E16X312 external control only PROFIBUS 3 ea. E1655.52 + 1 E1696.22
E16X313 Automatic Test Routine RS232 3 ea. E1655.51 + 1 E1696.31
E16X314 Automatic Test Routine PROFIBUS 3 ea. E1655.52 + 1 E1696.32

Systems with 3 trip outputs from each channel for external voting, as breaking contacts:
System No Test Function Type Data Modules incorporated
Interface
E16X321 external control only RS 232 3 ea. E1655.41 + 1 E1696.21
E16X322 external control only PROFIBUS 3 ea. E1655.42 + 1 E1696.22
E16X323 Automatic Test Routine RS232 3 ea. E1655.41 + 1 E1696.31
E16X324 Automatic Test Routine PROFIBUS 3 ea. E1655.42 + 1 E1696.32

Notes:
Systems come ready wired to terminals blocks, according to the specified function.
The modules listed above for each version are recommended as Spare Parts.

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Revision notes
10.06.2002: Default value of P02.11 of E1655 is 1 ( not 0 )
20.12.2002: Default value of P02.00 of E1696 is 0 ( not 1 )
Default value of P02.03 of E1696 is 0 ( not 1 )
4.1.2003: Dimensions of A-Version included

Rev:01 Date 12.2006:

Description of step P02.07 from monitor E1655 completed:
Parameter 2 = detected deviation releases channel warning alarm only (no trip)

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