EZ-ZONE® PM Express

User's Guide

L L
I I
M M
I I
T T

RESET
RESET
L
I
M
RESET
I
T

Limit Controller
TOTAL
CUSTOMER
SATISFACTION
3 Year Warranty

ISO 9001

Registered Company
Winona, Minnesota USA

1241 Bundy Boulevard., Winona, Minnesota USA 55987

Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507 http://www.watlow.com
0600-0066-0000 Rev. F Made in the U.S.A.

July 13, 2017

Safety Information
We use note, caution and warning symbols throughout this book to draw your attention to important operational
and safety information.
A “NOTE” marks a short message to alert you to an important detail.
A “CAUTION” safety alert appears with information that is important for protecting your equipment and perfor-
mance. Be especially careful to read and follow all cautions that apply to your application.
A “WARNING” safety alert appears with information that is important for protecting you, others and equipment
from damage. Pay very close attention to all warnings that apply to your application.
The electrical hazard symbol, (a lightning bolt in a triangle) precedes an electric shock hazard CAUTION or
WARNING safety statement. Further explanations follow:

Symbol Explanation

CAUTION – Warning or Hazard that needs further explanation than label on unit can provide.
Consult users manual for further information.

ESD Sensitive product, use proper grounding and handling techniques when installing or
servicing product.

Unit protected by double/reinforced insulation for shock hazard prevention.

Do not throw in trash, use proper recycling techniques or consult manufacturer for proper
disposal.

Unit can be powered with either alternating current (ac) voltage or direct current (dc) voltage.

Unit is a Listed device per Underwriters Laboratories®. It has been evaluated to United
States and Canadian requirements for Process Control Equipment. UL 61010 and CSA C22.2
No. 61010. File E185611 QUYX, QUYX7. See: www.ul.com

Unit is compliant with European Union directives. See Declaration of Conformity for further
details on Directives and Standards used for Compliance.

Unit has been reviewed and approved by Factory Mutual as a Temperature Limit Device per
FM Class 3545 standard. See: www.fmglobal.com

Unit has been reviewed and approved by CSA International for use as Temperature
Indicating-Regulating Equipment per CSA C22.2 No. 24. See: www.csa-international.org

Warranty
This EZ-ZONE® PM is manufactured by ISO 9001 registered processes and is backed by a three year warranty to
the first purchaser for use, providing that the units have not been misapplied. Watlow's obligations hereunder, at
Watlow's option, are limited to replacement, repair or refund of purchase price, and parts which upon examina-
tion prove to be defective within the warranty period specified. This warranty does not apply to damage resulting
from transportation, alteration, misuse or abuse. The purchaser must use Watlow parts to maintain all listed
ratings.

EZ-ZONE PM Limit Express • 2 •

Technical Assistance
You can get assistance from your local Watlow representative (see back cover), send an email with your ques-
tions to: wintechsupport@watlow.com or dial +1 (507) 494-5656 between 7 a.m. and 5 p.m. Central Standard
Time (CST) and ask for an Applications Engineer. Please have the following information available when calling:
• Complete model number
• All configuration information
• User's Manual
• Factory Page
The EZ-ZONE PM Controller User’s Guide is copyrighted by Watlow Electric, Inc., © April 2013 with all rights
reserved. The EZ-ZONE PM is covered by U.S. Patent No. 6,005,577 and Patents Pending
Product Overview
The EZ-ZONE PM Express single loop Limit controller is available in 1/4, 8th, 16th or 32nd DIN panel-mount pack-
ages. Ordering options include high or low voltage units with up to two outputs.

EZ-ZONE PM Limit Express • 3 •

Installation and Wiring
1/32 DIN (PM3) Dimensions
15.9 mm
(0.63 in)
101.6 mm
(4.00 in)

31.2 mm 53.3 mm
(1.23 in) (2.10 in)
Side

30.9 mm
(1.22 in)
Front

Top

1/32 DIN (PM3) Recommended Panel Spacing

44.96 to 45.47 mm
(1.77 to 1.79 in)

22.2 to 22.5 mm
(0.87 to 0.89 in)
21.6 mm
(0.85 in)
minimum

21.6 mm
(0.85 in)
EZ-ZONE PM Limit Express • 4 • Ins ta ll & W i r i n g
 1/16 DIN (PM6) Dimensions
15.8 mm
(0.62 in) 101.6 mm 53.3 mm
(2.10 in)
(4.00 in)

53.3 mm
(2.10 in)

Side Front

51.2 mm
(2.02 in)

Top

1/16 DIN (PM6) Recommended Panel Spacing

44.96 to 45.47 mm
(1.77 to 1.79 in)

44.96 to 45.47 mm
(1.77 to 1.79 in)

21.6 mm
panel thickness 1.53 to 9.52 mm
(0.85 in)
(0.060 to 0.375 in)
minimum

21.5 mm
(0.85 in)
EZ-ZONE PM Limit Express • 5 • Ins ta ll & W i r i n g
 1/8 DIN (PM8) Vertical Dimensions
15.75 mm (0.62 in)
53.34 mm 1.52 mm (0.06 in)
(2.10 in)

100.33 mm
(3.95 in)

54.8 mm 10.16 mm
(2.16 in) (0.40 in)
30.73 mm (1.21 in)
101.60 mm (4.00 in)
1/8 DIN (PM8) Vertical - Recommended Panel Spacing
44.96 to 45.60 mm
(1.77 to 1.79 in)

92.00 to 92.80 mm
(3.62 to 3.65 in)

21.6 mm
panel thickness 1.53 to 9.52 mm (0.85 in)
(0.060 to 0.375 in) Minimum

21.6 mm
(0.85 in)
Minimum
EZ-ZONE PM Limit Express • 6 • Ins ta ll & W i r i n g
 1/8 DIN (PM9) Horizontal Dimensions

15.75 mm (0.62 in)

100.33 mm 1.52 mm (0.06 in)

(3.95 in)

53.8 mm
53.34 mm
(2.16 in)
(2.10 in)

10.16 mm
(0.40 in)
30.73 mm (1.21 in)
101.60 mm (4.00 in)

1/8 DIN (PM9) Horizontal Recommended Panel Spacing

92.00 to 92.80 mm
(3.62 to 3.65 in)

44.96 to 45.6 mm
(1.77 to 1.79 in)

21.6 mm
panel thickness 1.53 to 9.52 mm
(0.85 in)
(0.060 to 0.375 in)
Minimum

21.6 mm
(0.85 in)
Minimum

EZ-ZONE PM Limit Express • 7 • Ins ta ll & W i r i n g

 Dimensions 1/4 DIN (PM4) Dimensions
15.75 mm (0.62 in)
100.33 mm
(3.05 in) 1.52 mm (0.06 in)

100.33 mm
(3.95 in)

12.70 mm
(0.50 in)
30.73 mm (1.21 in)
100.84 mm (3.97 in)

92.00 to 93.0 mm
(3.62 to 3.65 in)

92.00 to 93.0 mm
(3.62 to 3.65 in)

21.6 mm
(0.85 in) panel thickness 1.53 to 9.52 mm
Minimum (0.060 to 0.375 in)

21.6 mm
(0.85 in)
Minimum
EZ-ZONE PM Limit Express • 8 • Ins ta ll & W i r i n g
Installation the ridges on the sides of the controller. Each
tooth is staggered at a different depth from the
CASE front so that only one of the tabs, on each side,
is locked onto the ridges at a time.
BEZEL
Removing the Mounted Controller from Its Case
1. From the controller's face, pull out the tab on
each side until you hear it click.

RETENTION COLLAR

GASKET
PANEL

1. Make the panel cutout using the mounting

template dimensions in this chapter. Insert the
case assembly into the panel cutout.
Pull out the tab on Grab the unit above
2. While pressing the case assembly firmly each side until you and below the face
against the panel, slide the mounting collar hear it click. and pull forward.
over the back of the controller.
2. Once the sides are released, grab the unit
If the installation does not require a NEMA 4X seal, above and below the face with two hands and
slide the mounting collar up to the back of the panel pull the unit out. If it is difficult to pull the unit
tight enough to eliminate the spacing between the out, remove the connectors from the back of
the controller. This should make it easier to
gasket and the panel.
remove.
Ó Warning:
All electrical power to the controller and con-
trolled circuits must be disconnected before
removing the controller from the front panel
or disconnecting other wiring.
Returning the Controller to its Case
1. Ensure that the orientation of the controller is
correct and slide it back into the housing.
Slide the mounting col- Place the blade of a 2. Using your thumbs push on either side of the
lar over the back of the screwdriver in the controller until both latches click.
controller. notch of the mount- Note:
ing collar assembly.
The controller is keyed so if it feels that it will
3. For a NEMA 4X seal, place the blade of a not slide back in do not force it. Check the ori-
screwdriver in the notch of the mounting collar entation again and reinsert after correcting.
assembly and push toward the panel while
applying pressure to the face of the controller. Chemical Compatibility
Don't be afraid to apply enough pressure to This product is compatible with acids, weak alkalis,
properly install the controller. alcohols, gamma radiation and ultraviolet radiation.
The seal system is compressed more by mat- This product is not compatible with strong alkalis,
ing the mounting collar tighter to the front organic solvents, fuels, aromatic hydrocarbons, chlo-
panel (see picture). If you can move the case rinated hydrocarbons, esters and keytones.
assembly back and forth in the cutout, you do
not have a proper seal. The tabs on each side
of the mounting collar have teeth that latch into
EZ-ZONE PM Limit Express • 9 • Ins ta ll & W i r i n g
Terminal Definitions
Slot C Terminal Function Model

98 power input: ac or dc+ PM _L_ _ _ - AAAAB _ _

99 power input: ac or dc-

CF Standard Bus EIA-485 common PM _L_ _ _ - AAAAB _ _

CD Standard Bus EIA-485 T-/R-
CE Standard Bus EIA-485 T+/R+

Slot A

Input 1

T1 S2 (RTD) or current +, Universal Sensor

S1 S3 (RTD), thermocouple -, current - or input 1: all configurations
volts -, thermistor
R1 S1 (RTD), thermocouple + or volts +,
thermistor

Outputs Terminal Function Configuration

1 2

X1 common (Any switched dc output can Switched dc/open collector, output 1:

use.) PM _L_ (C) _-_ AAAB _ _
W1 dc- (open collector)
Y1 dc+

L1 normally open Mechanical Relay 5 A, Form C, output 1:

K1 common PM _L_ (E) _-_ AAAB _ _
J1 normally closed

L2 normally open Mechanical Relay 5 A, Form A, output 2:

K2 common PM _L_ _ (J)-_ AAAB _ _

EZ-ZONE PM Limit Express • 10 • Ins ta ll & W i r i n g

Note:
In the graphics below notice that the Slot A connector does not show labeling for the outputs. Labeling for Slot
A outputs is based on the controller part number.

PM3
PM6
98 99 CF CD CE
98
Output 1

99 C

CF
Output 2

CD
A
CE
Output 1 Output 2 T1 S1 R1
T1
S1
R1
A B C PM4
98

Output 1
99

Communications Card
PM8

Digital I/O 7 - 12
CF
Output 2
CD
CE
98
Output 1

T1
99 S1
R1
CF A D E C
Output 2

CD
Output 3

CE
T1
Output 4

S1
R1
A E C
Input 2

B
Output 3

Digital I/O 7 - 12

PM9
Output 4

98
Output 1

99
Input 2

CF
Output 2

CD
D
B D CE
T1
S1
R1
A B D E C

EZ-ZONE PM Limit Express • 11 • Ins ta ll & W i r i n g

Ó Note:
Warning: Adjacent terminals may be labeled differently, de-
Use National Electric (NEC) or other country-specific pending on the model number.
standard wiring and safety practices when wiring and Note:
connecting this controller to a power source and to To prevent damage to the controller, do not connect
electrical sensors or peripheral devices. Failure to do wires to unused terminals.
so may result in damage to equipment and property,
and/or injury or loss of life.
Note:
Maximum wire size termination and torque rating:
• 0.0507 to 3.30 mm2 (30 to 12 AWG) single-
wire termination or two 1.31 mm2 (16 AWG)
• 0.56 Nm (5.0 lb.-in.) torque

Slot C
Power
power
98
power
fuse • 47 to 63 Hz
99 • 10VA maximum power consumption (PM3 and PM6)
CF • 14VA maximum power consumption (PM4, 8 and 9)
CD Low Power

CE • 12 to 40VÎ (dc)
• 20 to 28VÅ (ac) Semi Sig F47
High Power

• 85 to 264VÅ (ac)
Power
•100 to 240VÅ (ac) Semi Sig F47

EZ-ZONE PM Limit Express • 12 • Ins ta ll & W i r i n g

Note:
In the drawings below for each input notice that the Slot A connector labeling is identified.
Note:
When using a 2 wire RTD, jumper S1 and T1 together

Inputs
All inputs shown below represent input 1 (the only input) and are to be connected to slot A of the Limit Control.

Process RTD Thermocouple

-
Volts 2 or 3 Wire S1
- S2
T1 + R1
S1 S3
+ R1 S1
S1
R1
Process Thermistor
Amperes S1
+ T1
R1
-
S1

Process Volts and Amperes Thermocouple

• 4 to 20 mA @ 100 Ω input impedance • 2 KΩ maximum source resistance
• 0 to 10VÎ (dc) @ 20 kΩ input impedance • >20 MΩ input impedance
• Scalable
• 3 microampere open-sensor detection
Resistance Temperature Detector (RTD) • Thermocouples are polarity sensitive. The nega-
• Platinum, 100 Ω @ 0°C tive lead must be connected to S1.
• Calibration to DIN curve (0.00385 Ω/Ω/°C) • To reduce errors, the extension wire for thermo-
• 20 Ω total lead resistance couples must be of the same alloy as the thermo-
• RTD excitation current of 0.09 mA typical. Each couple.
ohm of lead resistance may affect the reading by Thermistor
0.03°C. • >20 MΩ input impedance
• For 3-wire RTDs, the S1 lead must be connected
• 3 microampere open-sensor detection
to R1.
• For best accuracy use a 3-wire RTD to compen-
sate for lead-length resistance. All three lead
wires must have the same resistance.

EZ-ZONE PM Limit Express • 13 • Ins ta ll & W i r i n g

Outputs
Please note all outputs are connected exclusively to slot A. Output availability is based on the part number of
your Limit Control.
Note:
In the drawings below for each output notice that the Slot A connector labeling is identified with the corre-
sponding part number below.

Mechanical Relay Open Collector

Form C
Power
Supply
common
X1

L1 dc -
normally open W1

Load
K1
common
PM _ L _ (C) _ - A A A A B _ _
J1
normally closed

PM _ L _ (E) _ - A A A A B _ _

Mechanical Relay Switched DC

Form A common

L2 dc -
W1
dc +
K2 Y1

PM _ L _ _ (J) - A A A A B _ _ PM _ L _ (C) _ - A A A A B _ _
Note:
Output 2 is always the limit.

Quencharc Note:
Switching pilot duty inductive loads (relay coils, solenoids, etc.) with the mechanical relay, or open collector
output options requires use of an R.C. suppressor (Quencharc).

EZ-ZONE PM Limit Express • 14 • Ins ta ll & W i r i n g

Outputs (cont.)
Switched DC
• 22 to 32VÎ(dc) @ 30mA maximum supply current
• short circuit limited to <50 mA
• 22 to 32VÎ(dc) open circuit voltage
• Use dc- and dc+ to drive external solid-state relay.
• DIN-a-mite compatibility is for output 1 only.
- single-pole: up to 4 in parallel or 4 in series
- 2-pole: up to 2 in parallel or 2 in series
- 3-pole: up to 2 in series
Open Collector
• 100 mA maximum output current sink
• 30VÎ (dc) maximum supply voltage
• Use an external power supply to control a dc load, with the load positive to the positive of the power supply,
the load negative to the open collector and common to the power supply negative.
See Quencharc note.
Mechanical Relay Form C
• 5 A at 240VÅ (ac) or 30VÎ (dc) maximum resistive load, output 1
• 20 mA at 24V minimum load
• 125 VA pilot duty at 120/240VÅ (ac), 25 VA at 24VÅ (ac)
• 100,000 cycles at rated load
• Output does not supply power.
• for use with ac or dc
See Quencharc note.
Mechanical Relay Form A
• 5 A at 240VÅ (ac) or 30VÎ (dc) maximum resistive load, output 2
• 20 mV at 24V minimum load
• 125 VA pilot duty @ 120/240VÅ (ac), 25 VA at 24VÅ (ac)
• 100,000 cycles at rated load
• Output does not supply power.
• for use with ac or dc
See Quencharc note (previous page).

EZ-ZONE PM Limit Express • 15 • Ins ta ll & W i r i n g

 Keys & Displays 16th DIN LIMIT Controller
Upper Display:
Zone Display: On power up, displays Temperature Units Indicator
When [2onE] (found in the the process value, otherwise Lights:
Factory Page) is set to on, indicates displays the value of the Indicates whether the tempera-
the controller zone. parameter in the lower ture is displayed in Fahrenheit
[1] to [9] = zones 1 to 9 display. or Celsius.
[A] = zone 10 [E] = zone 14
[b] = zone 11 [F] = zone 15 PM6
Output Activity:
[C] = zone 12 [h] = zone 16 ®
L Number lights indicate activity
[d] = zone 13 I
M of outputs 1 and 2.
Lower Display: I
T
Indicates the current state of the Communications Activity:
limit [Fail] or [Safe]. Flashes when another device
EZ Key: is communicating with this
Performs reset function. controller.
RESET Key: Up and Down Keys: ¿ ¯
Press to reset limit after a trip con- When in a menu scrolls through
dition has been cleared. available options for any given
Advance Key: ‰ prompt. In other menus can
Advances through change set points and modify
parameter prompts. the upper display to a higher or
lower value.
Upon power-up, the upper display will briefly indicate the firmware revision and the
lower display will show PMb. The "b" in this case, reflects the B in the model number.

32nd DIN LIMIT Controller

With a few exceptions, all of the key functions described above for the 16th DIN LIMIT apply to the 32nd
DIN LIMIT controller as well.
PM3 Right Display:
Left Display:
L ®
On power up, displays the process I 1 2 Indicates the current state
M
value, otherwise displays the I
T
of the limit [Fail] or
value of the parameter in the right [Safe].
display.

Note:
As shown in the graphics on the following page the PM4, 8 and 9 controls will include two "EZ" buttons (EZ1
and EZ2). The button identified as EZ1 is equivalent to the EZ button described above where the button identi-
fied as EZ2 has no functionality. Assuming the issue that caused the limit to trip has been rectified pushing
the EZ1 will reset the limit as described for the Reset button above. All other buttons found on these controls,
maintain the same functionality as described above for the 16th DIN.

EZ-ZONE PM Limit Express • 16 • Ke y s & D i s p l a y s

 Keys & Displays for 1/8th or 1/4 DIN PID Controllers
PM9
®

L RESET

PM8 I
® M
I
L T
I
M
I
T

PM4
®
RESET

L
I
M
I
T

Responding to a Displayed Message

An active message will cause the display to toggle [AL;E1] Alarm 1 Error (alarm state cannot be deter-
between the normal settings and the active message mined due to lack of sensor input)
in the upper or left display and [Attn] in the lower [Er;i1] Error Input 1 (sensor is not providing a
or right display. valid signal to the control)
Your response will depend on the message and the [Li;L1] Limit Low 1 (sensor input below low limit
controller settings. If the message is generated by set point)
a latched alarm or limit condition, the message can [Li;h1] Limit High 1(sensor input above high limit
be silenced [Sil] or cleared [CLr] by simply set point)
pushing the reset key when the condition no [Li;E1] Li mit Error 1 (limit state cannot be deter-
longer exists. mined due to lack of sensor input, limit will trip
[AL;L1] Alarm 1 Low (sensor input below low
alarm set point)
[AL;h1] Alarm 1 High (sensor input above high
alarm set point)
Alarm Error 1

EZ-ZONE PM Limit Express • 17 • Ke y s & D i s p l a y s

Upon power up of the control,
using the advance key will scroll Operations Menu
through the various prompts found
in the Operations Menu. At any Display Parameter Name Description
point within the Operations menu
to return to the default display push [`LL;S] Limit Low Set Point
the Reset key. [ LL.S] Set the low process value that will trig-
ger the limit.
Appears if: Limit sides set to low or both.
Operations Menu
[`Lh;S] Limit High Set Point
[````] PAr1
[ Lh.S] Set the high process value that will trig-
‰ [````] PAr2 ger the limit.
Appears if: Limit sides set to high or both.
[`ll;s] Limit Low Set Point [`A;Lo] Alarm Low Set Point
[ A.Lo] Process - set the process value that will
[`lh;s] Limit High Set Point
trigger a low alarm.
[`A;lo] Alarm Low Point Appears if: Alarm Type (A.ty) is set to
Process Alarm
[`A;hi] Alarm High Point
[`A;hi] Alarm High Set Point
[ A.hi] Process - set the process value that will
[`i;Ca] Calibration Offset
trigger a high alarm.
Appears if: Alarm Type (A.ty) is set to
Process Alarm

[`i;CA] Calibration Offset

[ i.CA] Set an offset value for a process output.
Appears if: Always

EZ-ZONE PM Limit Express • 18 • Ope r a ti o n s Me n u

 Range
Defaults are shown bold

-1,999.000 to 9,999.000°F or units

-1,128.000 to 5,537.000°C
Units, 32°F or 0°C

-1,999.000 to 9,999.000°F or units

-1,128.000 to 5,537.000°C
Units, 300°F or 150°C

-1,999.000 to 9,999.000°F or units

-1,128.000 to 5,537.000°C
Units, 32.0°F or 0.0°C

-1,999.000 to 9,999.000°F or units

-1,128.000 to 5,537.000°C
Units, 300.0°F or 150.0°C

-1,999.000 to 9,999.000°F or units

-1,110.555 to 5,555.000°C
0.0

EZ-ZONE PM Limit Express • 19 • Ope r a ti o n s Me n u

To enter the Setup Menu push and hold
the up and down arrow keys for ap- Setup Menu
proximately 3 seconds. Once there, push Display Parameter Name Description
the green advance key to scroll through
to the prompt of choice and then use [LoC] Lockout Menu
the up and down arrow keys to change [LoC] Set the security clearance level. The user
the range. At any point within the Setup can access the selected level and all lower
menu to return to the default display levels.
push the Reset key. Appears if: Always

Setup Menu
[`loC] Lockout Menu
[Sen] Sensor Type
[`SEn] Sensor Type [ SEn] Set the analog sensor type to match the
‰ [`Lin] Linearization device wired to this input.
Appears if: Always.
[``t;C] Thermistor Curve
[``r;r] Resistance Range [Lin] Linearization
[ Lin] Set the linearization to match the thermo-
[`deC] Decimal couple type wired to this input.
[`C_F] Display Units For example, select [```H] for a type K
thermocouple.
[`r;lo] Limit Set Point Range Low Appears if: Sensor Type is set to Thermo-
[`r;hi] Limit Set Point Range High couple.

[`fn1] Function Output One [``t;C] Thermistor Curve

[ t.C] Select a curve to apply to the thermistor
[`fn2] Function Output Two input.
[`l;sd] Limit Sides
[``r;r] Resistance Range
[`l;hy] Limit Hysteresis [ r.r] Set the maximum resistance of the thermis-
[`A;ty] Alarm Type tor input.

[`A;hy] Alarm Hysteresis [`dEC] Decimal

[ dEC] Set the precision of the displayed value.
[`A;lg] Alarm Logic Appears if: Always.
[`A;lA] Alarm Latching
[`C_F] Display Units
[`A;bl] Alarm Blocking [ C_F] Select which units will be displayed.
[`A;si] Alarm Silencing Appears if: Always.
[A;dsp] Alarm Display [`r;Lo] Limit Set Point - Range Low
[par1] Upper or Left Display [ r.Lo] Sets the low limit of the set point adjustment
using a T/C and RTD; scales for process
[par2] Lower or Right Display inputs.
[`Ad;s] Zone Address Appears if: Always.

EZ-ZONE PM Limit Express • 20 • Se tu p Me n u

 Range (Defaults are shown bold)

1 to 5
1 Operations Menu (read only)*
2 Operations Menu (Set point R/W)*
3 Operations Menu (Set point R/W, Control Mode R/W)*
4 Operations Menu R/W access)*
5 Operations Menu and Setup Menu full R/W access
*You can change the security level at any level

[``tC] Thermocouple [`MA] Milliamps dc

[uolT] Volts dc [r0;1H] RTD 100 Ω

[`b] B [`J] J [`t] T

[`c] C [`H] K
[`d] D [`n] N
[`e] E [`r] R
[`f] F [`S] S

[```A] Curve A, [```b] Curve B, [```C] Curve C

[CUSt] Custom

[```5] 5K, [``10] 10K, [``20] 20K, [``40] 40K

[```0] Whole
[``0;0] Tenths
[`0;00] Hundredths

[```F] °F
[```C] °C

-1,999.00 to 9,999.000 °F or Units

-1,110.555 to 5,555.000 °C
0.0

EZ-ZONE PM Limit Express • 21 • Se tu p Me n u

To enter the Setup Menu push and hold
the up and down arrow keys for ap- Setup Menu (cont.)
proximately 3 seconds. Once there, push Display Parameter Name Description
the green advance key to scroll through
to the prompt of choice and then use [`r;hi] Limit Set Point - Range High
the up and down arrow keys to change [ r.hi] Sets the high limit of the set point adjust-
the range. At any point within the Setup ment using a T/C and RTD; scales for
menu to return to the default display process inputs.
push the Reset key. Appears if: Always.

[`fn1] Function of Output 1

Setup Menu [ fn1] Select which function will drive this output.
[`loC] Lockout Menu Appears if: Always.
[`SEn] Sensor Type

‰ [`Lin] Linearization
[`fn2] Function of Output 2
[``t;C] Thermistor Curve [ fn2] Select which function will drive this output.
Appears if: Always.
[``r;r] Resistance Range
[`deC] Decimal [`L;Sd] Limit Sides
[ L.Sd] Select which side or sides of the process
[`C_F] Display Units value will be monitored.
[`r;lo] Limit Set Point Range Low Appears if: Always.

[`r;hi] Limit Set Point Range High [`L;hy] Limit Hysteresis

[ L.hy] Set the hysteresis for the limit function. This
[`fn1] Function Output One
determines how far into the safe range the
[`fn2] Function Output Two process value must move before the limit
turns the output back on.
[`l;sd] Limit Sides
Appears if: Always.
[`l;hy] Limit Hysteresis
[`A;ty] Alarm Type
[`A;ty] Alarm Type [ A.ty] Select how the alarm will or will not track
[`A;hy] Alarm Hysteresis the set point.
Appears if: Always.
[`A;lg] Alarm Logic
[`A;hy] Alarm Hysteresis
[`A;lA] Alarm Latching
[ A.hy] Set the hysteresis for an alarm. This deter-
[`A;bl] Alarm Blocking mines how far into the safe region the pro-
cess value needs to move before the alarm
[`A;si] Alarm Silencing can be cleared.
[A;dsp] Alarm Display Appears if: When alarm type is set to process.
[par1] Upper or Left Display [a;lg] Alarm Logic
[A.Lg] Select what the output condition will be dur-
[par2] Lower or Right Display ing the alarm state.
[`Ad;s] Zone Address Appears if: Always

EZ-ZONE PM Limit Express • 22 • Se tu p Me n u

 Range (Defaults are shown bold)

-1,999.00 to 9,999.000 °F or Units

-1,110.555 to 5,537.000 °C

[`oFF] Off, [LiM] Limit*, [ALM] Alarm

*Note:
Switched DC/Open Collector option should only be used to control an external mechanical relay if Limit
function is selected.

[`LiM] Limit

[both] Both
[high] High
[LoW] Low

0.001 to 9,999.0°F or units

0.001 to 5,555.0°C
Units, 3.0°F or 2°C

[`oFF] Off
[PR;AL] Process Alarm

0.001 to 9,999.000°F or units

0.001 to 5,537.000°C
Units, 1.0°F or 1.0°C

[`a;lC] Close on Alarm

[`a;lo] Open on alarm

EZ-ZONE PM Limit Express • 23 • Se tu p Me n u

To enter the Setup Menu push and hold
the up and down arrow keys for ap- Setup Menu (cont.)
proximately 3 seconds. Once there, push Display Parameter Name Description
the green advance key to scroll through
to the prompt of choice and then use [`A;LA] Alarm Latching
the up and down arrow keys to change [ A.LA] Turn alarm latching on or off. A latched alarm
the range. At any point within the Setup has to be turned off by the user.
menu to return to the default display Appears if: When alarm type is set to process.
push the Reset key.
[`A;bL] Alarm Blocking
[ A.bL] Select when an alarm will be blocked. After
Setup Menu startup and/or after the set point changes,
[`loC] Lockout Menu the alarm will be blocked until the process
value enters the normal range.
[`SEn] Sensor Type
Appears if: When alarm type is set to process.
‰ [`Lin] Linearization
[`A;si] Alarm Silencing
[``t;C] Thermistor Curve [ A.Si] Turn alarm silencing on to allow the user
[``r;r] Resistance Range to disable the output tied (configured) to
this alarm
[`deC] Decimal Appears if: Always.
[`C_F] Display Units
[A;dSP] Alarm Display
[`r;lo] Limit Set Point Range Low [A.dSP] Display an alarm message when an
alarm is active.
[`r;hi] Limit Set Point Range High
Appears if: When alarm type is set to process.
[`fn1] Function Output One
[PAr1] Upper or Left Display
[`fn2] Function Output Two [PAr1] Select parameter to display.
[`l;sd] Limit Sides Appears if: Always.
[`l;hy] Limit Hysteresis [PAr2] Lower or Right Display
[`A;ty] Alarm Type [PAr2] Select parameter to display.
Appears if: Always.
[`A;hy] Alarm Hysteresis
[`A;lg] Alarm Logic [`ad;s] Zone Address - Standard Bus Com-
[`A;lA] Alarm Latching [ Ad.S] munication
Set zone address from 1-16.
[`A;bl] Alarm Blocking Appears if: Always.
[`A;si] Alarm Silencing
[A;dsp] Alarm Display
[par1] Upper or Left Display
[par2] Lower or Right Display
[`Ad;s] Zone Address

EZ-ZONE PM Limit Express • 24 • Se tu p Me n u

 Range (Defaults are shown bold)

[nLAt] Non-Latching
[`LAt] Latching

[`oFF] Off
[`Str] Startup
[StPt] Set Point
[both] Both

[`oFF] Off
[``on] On

[`oFF] Off
[``on] On

[AC;Pu] Active Process Value

[none] None

[`Ls;t] Limit State

[`Lh;S] Limit High Set Point
[`LL;S] Limit Low Set Point
[none] None

1-16
1

EZ-ZONE PM Limit Express • 25 • Se tu p Me n u

Specifications
Line Voltage/Power
• All voltage levels represent minimums and maximums
• 85 to 264V~(ac), 47 to 63Hz
• 20 to 28VÅ(ac), +10/-15 percent; 50/60Hz, ±5 percent
• 12 to 40VÎ(dc)
• 10VA maximum power consumption (PM3 and PM6)
• 14VA maximum power consumption (PM4, 8 and 9)
• Data retention upon power failure via nonvolatile memory
• Compliant with SEMI F47-0200, Figure R1-1 voltage sag requirements @ 24VÅ(ac) or higher
Environment
• -18 to 65°C (0 to 149°F) operating temperature
• -40 to 85°C (-40 to 185°F) storage temperature
• 0 to 90 percent RH, non-condensing
Accuracy
• Calibration accuracy and sensor conformity: ±0.1 percent of span, ±1°C @ the calibrated ambient temperature
and rated line voltage
• Type S, 0.2 percent
• Type T, below -50°C; 0.2 percent
• Calibration ambient temperature @ 25°C ±3°C (77°F ±5°F)
• Accuracy span: 540°C (1000°F) minimum
• Temperature stability: ±0.1°C/°C (±0.1°F/°F) rise in ambient maximum
Agency Approvals
• cULus® UL/EN/CSA C22.2 No. 61010-1 Listed File E185611
• cULus® ANSI/ISA 12.12.01-2007, CSA-C22.2 No.213-1987, Class 1 Division 2 Groups A, B, C and D, Tempera-
ture Code T4A, File E184390 (optional)
• UL® 50, 4X indoor locations, NEMA 4X, IP65 front seal
• CSA C22.2 No. 24 File 158031 (1/32 and 1/16 DIN sizes)
• CE, RoHS by design, W.E.E.E.
• FM Class 3545 File 3029084
• SEMI F47-0200
Serial Communications
• Isolated communications
• Standard Bus Configuration Protocol
Wiring Termination—Touch-Safe Terminals
• Input, power and controller output terminals are touch safe removable 12 to 22 AWG
• Use 75°C, Cu conductor only
Universal Input
• Thermocouple, grounded or ungrounded sensors
• >20MΩinput impedance
• Maximum of 2KΩ source resistance (applies to T/C only)
• RTD 2- or 3-wire, platinum, 100Ω @ 0°C calibration to DIN curve (0.00385 Ω/Ω/°C)
• Process, 4-20mA @ 100Ω, or 0-10VÎ(dc) @ 20kΩ input impedance; scalable

EZ-ZONE PM Limit Express • 26 • Spec i fi c a ti o n s

Specifications (cont.)
Thermistor Input (Not included with Universal Input)

Thermistor Input
Max Error Accuracy Accuracy
Input Type Units
@ 25 Deg C Range Low Range High
Thermistor, 5K range ±5 0 5000 Ohms
Thermistor, 10K range ±10 0 10000 Ohms
Thermistor, 20K range ±20 0 20000 Ohms
Thermistor, 40K range ±40 0 40000 Ohms

• 0 to 40KΩ, 0 to 20KΩ, 0 to 10KΩ, 0 to 5KΩ

• 2.252KΩ and 10KΩ base at 77°F (25°C)
• Linearization curves built in
• Third party Thermistor compatibility requirements

Base R @ Alpha Prompt

Beta THERM YSI
25C Techniques [``tC]
2.252K Curve A 2.2K3A 004 A
10K Curve A 10K3A 016 B
10K Curve C 10K4A 006 C

Functional Operating Range

• Type B: -50 to 1816°C (-58 to 3301°F)
• Type C: 0 to 2315°C (32 to 4199°F)
• Type D: 0 to 2315°C (-328 to 4199°F)
• Type E: -270 to 1000°C (-454 to 1832°F)
• Type F: 0 to 1343°C (32 to 2449°F)
• Type J: -210 to 1200°C (-346 to 2192°F)
• Type K: -270 to 1371°C (-454 to 2500°F)
• Type N: -200 to 1300°C (-328 to 2372°F)
• Type R: -50 to 1767°C (-58 to 3213°F)
• Type S: -50 to 1767°C (-58 to 3213°F)
• Type T: -270 to 400°C (-454 to 752°F)
• RTD (DIN): -200 to 800°C (-328 to 1472°F)
• Process: -1999 to 9999 units

EZ-ZONE PM Limit Express • 27 • Spec i fi c a ti o n s

Specifications (cont.)
Output Hardware
• Switched dc
22 to 32VÎ(dc) @ 30mA
• Open collector, maximum sink current 100 mA, @ 30VÎ(dc)
• Electromechanical relay, Form C, 5A, 24 to 240VÅ(ac) or 30VÎ(dc) maximum, resistive load, 100,000 cycles at
rated load
• Electromechanical relay, Form A, 5A, 24 to 240VÅ(ac) or 30VÎ(dc) maximum, resistive load, 100,000 cycles at
rated load
Operator Interface
• Dual 4 digit, 7 segment LED displays
• Typical display update rate 1Hz
• Advance, RESET, up and down keys plus an EZ-Key/s (not available in 1/32 DIN)

Ordering Part Number (Part number digits 1 through 14) PMXLXXX-AAAABXX

All Models include: *Universal Sensor Input, Standard Bus Configuration Communications
*Dual line Red over Green 7 Segment displays
Package Size (Digit #3)
3 = 1/32 DIN
6 = 1/16 DIN
8 = 1/8 DIN vertical
9 = 1/8 DIN horizontal
4 = 1/4 DIN
Primary Function (Digit #4)
L = Limit Controller w/ Universal Input
Power Supply (Digit #5)
1 = 100-240 VAC
3 = 12-28 VAC/DC
Output 1 and 2 Hardware Options (Digits #6 and #7)
Output 1 Output 2
AJ = None Mechanical relay 5A, Form A
CJ = Switched dc/open collector Mechanical relay 5A, Form A
EJ = Mechanical Relay 5 Amp form C Mechanical relay 5A, Form A
Future Options (Digits #8 thru #11)
AAAA = None
Menu Type (Digits #12)
B = Express
Additional Options (Digits #13 and #14)
AA = Standard EZ-ZONE face plate XX = Custom firmware,overlays,parameters settings
AB = EZ-ZONE logo and no Watlow name
AC = No logo and no Watlow name
AG = Conformal coating

EZ-ZONE PM Limit Express • 28 • Spec i fi c a ti o n s

EZ-ZONE PM Limit Express • 29 •
 How to Reach Us
Corporate Headquarters Europe
Watlow Electric Manufacturing Company Watlow France Watlow Ibérica, S.L.U.
12001 Lackland Road Tour d'Asnières. C/Marte 12, Posterior, Local 9
St. Louis, MO 63146 4 Avenue Laurent Cély E-28850 Torrejón de Ardoz
Sales: 1-800-WATLOW2 92600 Asnières sur Seine Madrid - Spain
Manufacturing Support: 1-800-4WATLOW France T. +34 91 675 12 92
Email: info@watlow.com Tél: + 33 (0)1 41 32 79 70 F. +34 91 648 73 80
Website: www.watlow.com Télécopie: + 33(0)1 47 33 36 57 Email: info@watlow.es
From outside the USA and Canada: Email: info@watlow.fr Website: www.watlow.es
Tel: +1 (314) 878-4600 Website: www.watlow.fr
Watlow UK Ltd.
Fax: +1 (314) 878-6814
Watlow GmbH Linby Industrial Estate
Postfach 11 65, Lauchwasenstr. 1 Linby, Nottingham, NG15 8AA
Latin America D-76709 Kronau United Kingdom
Watlow de México S.A. de C.V. Germany Telephone: (0) 115 964 0777
Av. Fundición No. 5 Tel: +49 (0) 7253 9400-0 Fax: (0) 115 964 0071
Col. Parques Industriales Fax: +49 (0) 7253 9400-900 Email: info@watlow.co.uk
Querétaro, Qro. CP-76130 Email: info@watlow.de Website: www.watlow.co.uk
Mexico Website: www.watlow.de From outside The United Kingdom:
Tel: +52 442 217-6235 Tel: +44 115 964 0777
Fax: +52 442 217-6403 Watlow Italy S.r.l. Fax: +44 115 964 0071
Viale Italia 52/54
20094 Corsico MI
Italy
Tel: +39 024588841
Fax: +39 0245869954
Email: italyinfo@watlow.com
Website: www.watlow.it

Asia and Pacific

Watlow Singapore Pte Ltd. Watlow Korea Co., Ltd.
16 Ayer Rajah Crescent, #1406, E&C Dream Tower, 46, Yangpyeongdong-3ga
#06-03/04, Yeongdeungpo-gu, Seoul 150-103
Singapore 139965 Republic of Korea
Tel: +65 6773 9488 Fax: +65 6778 0323 Tel: +82 (2) 2628-5770 Fax: +82 (2) 2628-5771
Email: info@watlow.com.sg Website: www.watlow.com.sg Website: www.watlow.co.kr

Watlow Australia Pty., Ltd. Watlow Malaysia Sdn Bhd

4/57 Sharps Road No. 14-3 Jalan 2/114
Tullamarine, VIC 3043 Kuchai Business Centre
Australia Jalan Kuchai Lama
Tel: +61 3 9335 6449 58200 Kuala Lumpur
Fax: +61 3 9330 3566 Malaysia
Website: www.watlow.com Tel: +60 3 7980 7741 Fax: +60 3 7980 7739

Watlow Electric Manufacturing (Shanghai) Company 䝵䔈爜榊㳮匰↌㦘棟⏻⚇

1118 Fangyuan Road, Anting Industrial Park, Jiading, Shanghai, 浧楓ゑⓜ摠●ₒ影ℛ恾壮㲢⃚₏
PRC 201203
榊崀 ⍂䦮
People’s Republic of China
Tel: +86 21 39509510 Watlow Electric Taiwan Corporation
Fax: +86 21 5080-0906 10F-1 No.189 Chi-Shen 2nd Road Kaohsiung 80143
Email: info@watlow.cn Taiwan
Website: www.watlow.cn Tel: +886-7-2885168 Fax: +886-7-2885568

ዌእዊዙዘንዀኮዐ㪹㆞↩䯍
ᇽ㨀℻掌◒ⅲ䞿◉␔䯭䞿 Your Authorized Watlow Distributor
⥪⦌ኰወ⒴殷椝
Tel: 03-3518-6630 Fax: 03-3518-6632
Email: infoj@watlow.com Website: www.watlow.co.jp
Watlow Japan Ltd.
1-14-4 Uchikanda, Chiyoda-Ku
Tokyo 101-0047
Japan
Tel: +81-3-3518-6630 Fax: +81-3-3518-6632 TOTAL
Email: infoj@watlow.com Website: www.watlow.co.jp CUSTOMER
SATISFACTION
3 Year Warranty

EZ-ZONE PM Limit Express • 30 •