SS2 Linear / Rotary Smart Valve Positioner

CONTROLS
A Division of AT Controls

Smart performance with innovative

and ever-strong coil drive even under
harsh working environments
Also available in
• REMOTE TYPE
• 316 STAINLESS STEEL BODY

www.atcontrols.com
 SS2 Linear / Rotary Smart Valve Positioner

Smart performance with innovative and ever-strong

coil drive even under harsh working environments

FEATURES

• Easy and quick auto-calibration

• Detecting RA (reverse acting) or DA (direct acting) automatically regardless
of wrong air connections
• Available to use for single or double acting without any special adjustments
• Compact design allowing to be installed on small actuators
SS2L (Linear Type)
• Provide error messages against performance failures
• Possible to test the actuator with any fixed signal under a test mode
• Programmable characteristic curve with 17 points
• Wide operating temperature range -30 ~ +80° C
• Improved control of high-friction globe and ball valves by eliminating
overshoot and hunting
• Low air consumption
• Mounting bracket to meet IEC 60534-6-1 for linear valves
• Support a NAMUR mounting pattern VDI/VDE 3845 (IEC 60534-6-2) and
providing a multi-size mounting bracket for rotary valves

OPTIONS

• Output position transmitter (4 - 20 mA)

• 2 x alarm limit or micro switch (SPDT)
• Explosion proof type (IECEx / ATEX / KC Ex ia IIC T5)
SS2R (Rotary Type)
• HART communication
• Profibus communication
• Fieldbus Foundation communication

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CONTROLS
A Division of AT Controls

SPECIFICATIONS

Input Signal 4 - 20 mA @ 24 VDC

Min. / Max. Current 3.6 mA / 50 mA
Without Hart : 8.7 VDC (435Ω @ 20 mA)
Voltage Drop (Resistance)
With Hart : 9.4 VDC (470Ω @ 20 mA)
Linear type : 5 - 130 mm *
Stroke / Angle
Rotary type : 25 - 120°
Air Supply Pressure 1.4 - 7.0 bar ( 20 - 100 psi ), filtered, compressed dry and non-oiled to meet Class 3 of ISO 8573-1
Output Pressure Range 0 - 100% of supply air pressure
80 ℓ/min = 4.8 Nm3/h = 2.8 scfm (Sup = 20 PSIG)
Air Capacity
233 ℓ/min = 14 Nm3/h = 8.2 scfm (Sup = 90 PSIG)
Air Consumption 2 ℓ/min = 0.12 Nm3/h = 0.07 scfm (Sup = 20 ~ 90 PSIG)
Linearity < ±0.3% F.S Sensitivity < 0.2% F.S
Characteristic
Hysteresis < 0.2% F.S Repeatability < 0.2% F.S
Performance Characteristic Linear, EQ %, Quick open, User set (17 points)
LCD Indication 4-digit LCD indicator
Adjustable Speed 1 - 1000 (lowest 1, highest 1000)
Scan Time 2ms
Shut-off Value Range 0 - 10% of position signal
Valve Action direct action (DA) / reverse action (RA)
Operating Temperature - 30 ~ +80°C (- 22 ~ +176°F ) **
Pneumatic Connections NPT 1/4
Electrical Connections NPT 1/2
Protection Class IP66, intrinsically safe (IECEx / ATEX / KC Exia IIC T5)
Body Material Aluminum die-cast / powder-painted
Weight 3.5 LBS.
* Up to 200mm on request ** -40°C on request

PRINCIPALS OF OPERATION

Digital Control Circuit I/P Converting Process

~
~

OUT 1
ELECTRONIC
COIL
OUT 2 X

VALVE POSITION
SENSOR

MICRO SWITCHES
SWITCH 1, 2

If 4-20 mA input signal is supplied, the micro processor compares input signal with position feedback and sends
control signal to the I/P converting module. Pneumatic signal from the I/P converting module operates the valve
and the valve stays at the desired position.

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 SS2 Linear / Rotary Smart Valve Positioner

MOUNTING TO SS2L (Linear Type)

Feedback pin
guide lever

OUT1
OUT2
SUP

< Front View > < Side View > < Feedback Lever Connection >

“A” Type ‘U’ bolts for pillar

mounted actuators
Mounting on yoke
43 with plane surface Center bolt for yoke
mounted actuators
30
Feedback pin
“B” Type guide lever

43
75
65

148.5
“C” Type

73.5
130

Feedback Lever
Mounting to linear actuators to IEC 60534 6-1

MOUNTING TO SS2R (Rotary Type)

SS2R
SMART POSITIONER

ator
H

Actu L
ator
Actu ROTARY ACTUATOR

NAMUR Type Fork Lever Type Size Variation of Multi-Size Bracket

Mounting Mounting 1) 80 x 30 x 20 (H) ,4) 130 x 30 x 20 (H)
( VDI/VDE 3845, 2) 80 x 30 x 30 (H) ,5) 130 x 30 x 30 (H)
3) 80 x 30 x 50 (H) ,6) 130 x 30 x 50 (H)
IEC 60534-6-2 )
H : Rotary Actuator Shaft Height
L : Length ( 80 or 130mm )

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CONTROLS
A Division of AT Controls

AIR CONNECTIONS SS2L (Linear Type)

DA 1 RA 1
OUT 1 OUT 1

INPUT -+ SUP INPUT -+ SUP

DA 2 RA 2
OUT2
OUT2

INPUT -+ SUP INPUT -+ SUP

DA 3 OUT 1 RA 3
OUT2
OUT2 OUT 1

INPUT -+ SUP INPUT -+ SUP

AIR CONNECTIONS SS2R (Rotary Type)

Spring Return Double Acting Double Acting

INPUT -+ INPUT -+ INPUT -+

SUP SUP SUP

As the input signal increases, As the input signal increases, As the input signal increases,
Actuator shaft rotates counter-clockwise Actuator shaft rotates counter-clockwise Actuator shaft rotates clockwise

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 SS2 Linear / Rotary Smart Valve Positioner

FRONT COVER REMOVED

1 : Air supply 9 : Input signal (+, -)

2 : OUT 1 10 : Frame ground
3 : OUT 2 11 : Output signal (+, -)
4 : Display LCD 12 : Alarm limit 1
5 : Up key 13 : Alarm limit 2
6 : Mode key 14 : Electrical connections
7 : Enter key 15 : Ground
8 : Down key 16 : Feedback lever

ELECTRICAL CONNECTIONS

Alarm limit 1, 2

Input signal

Output signal

Micro switches 1, 2

CHARACTERISTICS

Button Action

Auto -
Calibration Push 5 seconds for auto-calibration

User Set Push 5 seconds

to change a measured span
Span or
(Try this option only when a valve
doesn’t reach a desired position)

Ambient Confirm an ambient temperature

Temp. surrounding this smart valve positioner

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 ™

CONTROLS
A Division of AT Controls

PARAMETERS DIAGRAM

Shows the operating situation of the positioner

Changes the parameters

Decides LCD display mode in mA, % or a reverse way

Converts to the manual mode

Shows the selected parameters and a total valve runtime

Performs auto-calibration and resets all programmed values

Main parameters

Tests in process of 2-step, 4-step, or 10...100%

Locks the set values

Parameter Description Function Default

INPU Input signal 4 ~ 20mA or 20 ~ 4mA 4 ~ 20mA

R/DA RA/DA Reverse acting or direct acting Auto-set

L/EQ Characteristic Linear, E.Q.%(1:25 or 1:50), Quick open or User set(17points) Linear

SPAN Span adjustment 0 ~ 100% 100%

ZERO Zero adjustment 0 ~ 99% 0%

PID P-GN / I-GN / D-GN Proportional / Integral / Differential gain value Auto-set

SPED Response speed 1 ~ 1000 1000

SWST Slow start Smooth operation (ON or OFF) Auto-set

CNLT Control limit 50 ~ 1250 Auto-set

GCNL Gap control limit 50 ~ 1250 Auto-set

DEAD Dead band 0 ~ 9.99% 0.5%

FDGN D-gain setting for hard mode D-Gain setting for hard mode Auto-set

C/MD NORM / HARD / SMAL Standard actuator, strong valve packing friction, small actuator NORM

SHUT Shut-off 0 ~ 9.9% 0.3%

FOPN Full-open 0 ~ 9.9% 0.3%

OUT Output signal 4 ~ 20mA or 20 ~ 4mA 4 ~ 20mA

SPLT Split range 4 ~ 12mA or 12 ~ 20mA 4 ~ 20mA

DIGN Display place Movement to one or two decimal places 1

ALAM Alarm limit low, high AL1L / AL1H / AL2L / AL2H 0 ~ 10%, 90 ~ 105%

ICAL IN4M / IN20 Internal match with 4~20mA input signals from a calibrator Factory setting

FCAL FB4M / FB20 Internal match with 4~20mA output signals to a calibrator Factory setting

POLL Polling address HART Communication polling address (0 ~ 15) 0

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 SS2 Linear / Rotary Smart Valve Positioner

WIRING ALARM LIMITS MICRO SWITCHES (SPDT)

positioner

24 VDC

11 12 13 14 15 16
NO NC COM NO NC COM
24 VDC
Switch 1 Switch 2
Note that 24 VDC should be supplied for power.

Micro Switches
MEASURING OUTPUT SIGNAL
Type SPDT
1000
Rating 10.1A @ 250 VAC
Ambient Temperature -30 ~ +85° C
Cal. 750
650
Position Transmitter
Output Signal 4 - 20 mA, 2-wire
500

12 - 30 VDC Power Supply 12 - 30 VDC

250 Output Current Limit 30 mA DC
Linearity ±0.5% F.S
0
ZERO and SPAN of position 10 20 30 VDC
Operating Temperature -30 ~ +80° C
feedback are automatically set 12 VDC 24 VDC (NOR.)
after auto-calibration process. < Transmitter Load Limitation >

HOW TO ORDER

SS2 Actuator Protection Feedback Pressure Position Communi Connection Mounting Feedback Pin
By-pass Guide Lever
Operation Class Lever Gauges Feedback cation Threads Bracket
Set

Actuator Operation : L : Linear type Position Feedback : N : None

R : Rotary type O : Position transmitter
(4~20mA output signal)
Protection Class : I : Intrinsically safe L : 2 x alarm limit
(IECEx Ex ia IIC T5 / S : 2 x micro switch (SPDT)
ATEX Eex ia IIC T5) M: O + L
K : Intrinsically safe Q: O+S
(KC Ex ia IIC T5)
W : Weatherproof to IP66 Communication : N: None
H: HART
Feedback Lever : P: Profibus PA
F : Fieldbus
- Linear type : A: Stroke (5~30mm)
B: Stroke (5~65mm) Connection Threads : 3 : PT(Rc) 1/4 - PF(G) 1/2
C: Stroke (5~130mm) (pneumatic - electrical) 4 : NPT 1/4 - NPT 1/2
D: Stroke (80~200mm) 5 : PT(Rc) 1/4 - M20 x 1.5
- Rotary type : F : Fork lever
N: NAMUR shaft (direct mounting) Mounting Bracket : N : None
L : IEC 60534-6-1 (for SS2L)
Gauge Block : 0 : Not mounted R : IEC 60534-6-2 (for SS2R)
1 : 6 bar (90 psi) VDI/VDE 3845
2 : 10 bar (150 psi)
Feedback Pin Guide 0 : Not included
By-pass : N : None (standard) Lever Set : 1 : Included
Y : Yes (auto/manual screw) (only for linear type SS2L)

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CONTROLS
A Division of AT Controls

DIMENSIONS SS2L (Linear Type)

OUT 1

3-
139

P
T1
12

/4
OUT 2

28 15
GROUND

87.5

28
23.7

15
SUP
35.5
Electrical connections
157.5
188.5

88.1

88.1
73.5

73.5
35.5
25.7

< Without Gauge Block > P.C.D 50

4-M6

9.5

35

65
51
11.5
Without Gauge Block
62.2 35 23 18.8 4-M8

DIMENSIONS SS2R (Rotary Type)

139 OUT 1

3-
P
T1
12

/4
OUT 2

28 15
GROUND
87.5

28
23.7

15
SUP
35.5 Electrical connections
188.5
73.5
112
35.5
14

25.7

27
P.C.D 50
< Fork Lever Type > 4-M6

9.5
35

65
51

11.5
With Gauge Block
62.2 35 23 18.8 4-M8

DIMENSIONS SS2 with 2 x SPDT Micro S/W

73.5
87.5
35.5

25.7

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 SS2 Linear / Rotary Smart Valve Positioner

DIMENSIONS RSS2 (Remote Type)

< Linear Type Remote Position Unit >

65 94.5
45 49
35.4 45

6
M
2-

59.6
M
3-
Connector

32.5
79.6
17.7

Ø91
17.7

268.4
161
32.5

Cable length
: 3, 5, 10, 15m
16 CABLE CONNECTOR

< Rotary Type Remote Position Unit >

65 94.5
45 49
35.4 45

Linear type
Remote position unit
6
M
2-

8
M

59.6
3-
32.5
79.6

17.7
Rotary type Ø91

Remote position unit

17.7

32.5
6
100°

CABLE CONNECTOR

HOW TO ORDER RSS2 (Remote Type) NOTE: All sepecifications and characteristics are the same with SS2

RSS2 Actuator
Operation
Protection
Class
Feedback
Lever
Pressure
Gauges
By-pass
Position
Feedback
Communi
cation
Connection
Threads
Cable
Length

Actuator Operation : L : Linear type By-pass : N : None

R : Rotary type Y : Yes (auto/manual screw)

Protection Class : I : Intrinsically safe Position Feedback : N : None

(IECEx Ex ia IIC T5, O : Position transmitter
ATEX Eex ia IIC T5) (4~20mA output signal)
K : Intrinsically safe L : 2 x alarm limit
(KC Ex ia IIC T5) M: O + L
W : Weatherproof to IP66
Communication : N: None
Feedback Lever : H: HART
- Linear type : A : Stroke (5~40mm) P: Profibus PA
B : Stroke (5~80mm) F : Fieldbus
C : Stroke (5~150mm)
- Rotary type : F : Fork lever Connection Threads : 3 : PT(Rc) 1/4 - PF(G) 1/2
(pneumatic - electrical) 4 : NPT 1/4 - NPT 1/2
Gauge Block : 0 : Not mounted 5 : PT(Rc) 1/4 - M20 x 1.5
1 : 6 bar (90 psi)
2 : 10 bar (150 psi) Cable Length : 3, 5, 10, 15m
Other : On request

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 ™

CONTROLS
A Division of AT Controls

SS2SL & SS2SR (Stainless Steel 316 Body)

Input Signal 4 - 20 mA @ 24 VDC

Min. / Max. Current 3.6 mA / 50 mA
Without Hart : 8.7 VDC (435Ω @ 20 mA)
Voltage Drop (Resistance)
With Hart : 9.4 VDC (470Ω @ 20 mA)
Linear type : 5 - 130 mm *
Stroke / Angle
Rotary type : 25 - 120°
Air Supply Pressure 1.4 - 7.0 bar (20 - 100 psi)
Output Pressure Range 0 - 100% of supply air pressure
80 ℓ/min = 4.8 Nm3/h = 2.8 scfm (Sup = 20 PSIG)
Air Capacity
233 ℓ/min = 14 Nm3/h = 8.2 scfm (Sup = 90 PSIG)
Air Consumption 2 ℓ/min = 0.12 Nm3/h = 0.07 scfm (Sup = 20 ~ 90 PSIG)
Linearity < ±0.3% F.S Sensitivity < 0.2% F.S
Characteristic
Hysteresis < 0.2% F.S Repeatability < 0.2% F.S
Performance Characteristic Linear, EQ %, Quick open, User set (17 points)
LCD Indication 4-digit LCD indicator
Adjustable Speed 1 - 1000 (lowest 1, highest 1000)
Scan Time 2ms
Shut-off Value Range 0 - 10% of position signal
Valve Action Direct action(DA) / Reverse action(RA)
Operating Temperature - 30 ~ +80° C (- 22 ~ +176° F) **
Pneumatic Connections NPT 1/4 (other on request)
Electrical Connections NPT 1/2 (other on request)
Protection Class IP66, intrinsically safe (IECEx / ATEX / KC Exia IIC T5)
Body Material Stainless steel 316
Weight 8.5 LBS. (without bracket)
* Up to 200mm on request ** -40° C on request

HOW TO ORDER SS2SL & SS2SR

SS2S Actuator Protection Feedback Pressure Position Communi Connection Mounting Feedback Pin
By-pass Guide Lever
Operation Class Lever Gauges Feedback cation Threads Bracket
Set

Actuator Operation : L : Linear type Position Feedback : N : None

R : Rotary type O : Position transmitter
(4~20mA output signal)
Protection Class : I : Intrinsically safe L : 2 x alarm limit
(IECEx Ex ia IIC T5 / S : 2 x micro switch (SPDT)
ATEX Eex ia IIC T5) M: O+L
K : Intrinsically safe Q: O+S
(KC Ex ia IIC T5)
W : Weatherproof to IP66 Communication : N : None
H : HART
Feedback Lever : P : Profibus PA
- Linear type : A : Stroke (5~30mm) F : Fieldbus
B : Stroke (5~65mm)
C : Stroke (5~130mm) Connection Threads : 4 : NPT 1/4 - NPT 1/2
D : Stroke (80~200mm) (pneumatic - electrical)
- Rotary type : F : Fork lever
N : NAMUR shaft (direct mounting) Mounting Bracket : N : None
L : IEC 60534-6-1 (for SS2SL)
Gauge Block : 0 : Not mounted R : IEC 60534-6-2 (for SS2SR)
1 : 6 bar (90 psi) VDI/VDE 3845
2 : 10 bar (150 psi)
Feedback Pin Guide 0 : Not included
By-pass : N : None Lever Set : 1 : Included
Y : Yes (auto/manual screw) (only for linear type SS2SL)

www.atcontrols.com 11
SS2 Linear / Rotary Smart Valve Positioner

CONTROLS
A Division of AT Controls
9955 International Blvd.
Cincinnati, Ohio 45246
P: 513 - 247 - 5465
F : 513 - 247 - 5462
sales@atcontrols.com
www.atcontrols.com

SS2-20140613