FAIL FREEZE POSITIONER : SS5
Features
- “Fail Freeze” function to help the valve stay at the last position on the loss of the electrical power supply
- 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
- Providing 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℃
- Improved control of high-friction globe and ball valves by eliminating an overshoot and a hunting
- Low air consumption
- Providing a mounting bracket to meet IEC 60534-6-1 for linear valves
- Supporting a NAMUR mounting pattern VDI/VDE 3845 (IEC 60534-6-2) and providing a multi-size mounting bracket for rotary valves
Option
- Output position transmitter (4 - 20 mA)
- 2 x alarm limit or micro switch (SPDT)
- Explosion proof type (Exia IIC T6) (in progres)
- HART communication
- Profibus PA communication(pending)
- Fieldbus FF communication(pending)
Specifications
| Input Signal |
4 - 20 mA @ 24 VDC |
| Min. / Max. Current |
3.6 mA / 50mA |
| Voltage Drop (Resistance) |
Without Hart : 8.7 VDC (435Ω @ 20mA)
With Hart : 9.4 VDC (470Ω @ 20mA) |
|
Stroke / Angle |
Linear type : 8 - 130mm * |
|
Air Supply Pressure |
1.4 - 7.0 bar (20 - 100 psi) |
|
Output Pressure Range |
0 - 100% of supply air pressure |
| Air Capacity |
80 ℓ/min = 4.8 Nm3/h = 2.8 scfm (Sup = 1.4 bar) |
|
Air Consumption |
2.8 ℓ/min = 0.17 Nm3/h = 0.1 scfm (Sup = 1.4 ~ 6 bar)
|
| Performance Characteristic |
Linearity < ±0.3% F.S |
|
LCD Indication |
4-digit LCD indicator |
|
Adjustable Speed |
1 - 1000 ( lowest 1, highest 1000 ) |
|
Scan Time |
2ms |
| Fail freeze level |
Input signal < 3mA
|
|
Fail freeze drift rate |
+2% setpoint / hour at constant temp |
| Shut-off Value |
Range 0 - 10% of position signal
|
|
Valve Action |
Direct action(DA) / reverse action(RA) |
|
Operating Temperature |
-30 ~ +80℃ (-22 ~ +176℉) **
|
| Pneumatic Connections |
Rc 1/4 or 1/4 NPT |
|
Electrical Connections |
2 x G 1/2 or 1/2 NPT |
|
Protection Class |
IP66, intrinsic safety (Exia IIC T6) |
|
Body Material |
Aluminum die-cast / powder-painted |
|
Weight |
2 kg |
How to order
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