SRD960
Universal Valve Positioner SRD960; Position Transmitter SRD960-T
Manufactured by
The Universal Positioner SRD960 is designed to operate pneumatic valve actuators and is available in the version Ex d / explosionproof (flameproof). It can be operated from control systems (e.g. the Foxboro I/A Series System), controllers, or PC-based configuration- and operation tools such as VALcare™. The positioner is available with different communication protocols. The multi-lingual full text grafic-LCD in connection with the external 4 push buttons (optional with infrared interface IrCom) allows a comfortable and easy local configuration and operation.
MAIN FEATURES
- Intelligent
- Auto-start with self-calibration
- Self diagnostics, status- and diagnostic messages
- Easy operation with four key pads
- Multi-Lingual full text grafical LCD, or LEDs
- With communication HART, FOUNDATION Fieldbus H1, PROFIBUS-PA, FoxCom
- Configuration by means of local keys, hand- held terminal (HART), PC or I/A Series system or with a infrared interface by means of IRCOM
- Advanced Diagnostic / Premium Diagnostic: FDT-based Software vor valve diagnostic and Predictiv Maintenance
- Stroke 8 to 120mm/ 260mm(0.3 to 4.7 in / 10.2 in)
- Angle range up to 95 ° (up to 300° on request)
- Supply air pressure up to 6 bar (90 psig), with spool valve up to 7 bar (105 psig)
- Single or double-acting
- Mounting on linear actuators according to NAMUR – IEC 534, Part 6 – VDI/VDE 3847
- Mounting on rotary actuators acc. to VDI/VDE 3845
- Protection class IP 66, NEMA 4X
- Approved for SIL applications
- Explosion protection: Flameproof acc. to ATEX, Explosion proof acc. to FM
Travel range
Stroke range | 8 ... 260mm(0.3 ... 10.2 in) with standard feedback levers; special levers on request |
Rotation angle range | up to 95 ° (without mechanical stop) |
Supply Supply air pressure5) |
1.4 ... 6 bar (20 ... 90 psig) |
with spool valve 4) | 1.4 ... 7 bar (20...105psig) |
Output to actuator | 0 to ~100%of supply air pressure (up to 5.5 bar at 6 bar supply air pressure) |
Air supply 1) | according to ISO 8573-1 |
Solid particle size and density class 2 Oil rate |
class 3 |
Pressure dew point 10 K under ambient temperature For air supply, we recommend the FOXBORO ECKARDT FRS923 filter regulator. Response characteristic 2) 3) Sensitivity |
0.1%of travel span |
Non-linearity (terminal based adjustment) | 0.4%of travel span |
Hysteresis | 0.3%of travel span |
Supply air dependence | 0.1%/ 1 bar (15 psi) |
Temperature effect | 0.3%/ 10 K |
Mechanical vibration 10 to 60 Hz up to 0.14 mm, 60 to 500Hz up to 2 g |
0.25%of travel span |
Features
Automatic start-up | Autostart functionality |
Automatic detection of mechanical stops, control parameters and of direction of spring force. A dynamic optimization is included in this procedure. This procedure allows a full adaptation on optimi- zation of the positioner to the actuator without any manual adjustments!
Options
- Built-in independent inductive limit switches
- Pressure Sensors for supply air pressure and output pressure I (y1) and II (y2)
- Additional Inputs / outputs:
- 2 binary outputs (position alarms)
- Position feedback 4 to 20 mA + binary alarm output
- 2 binary inputs
Options
In AISI 316 with | code F1 |
transmitter flange integrated manifold | code F2 |
Operation and configuration
Local | with four keys |
Display | Multi-Lingual Graphic LCD or five LEDs |
The positioner in LCD version is available with three different menu languages: Two menu languages are standard: |
- English - German |
Freely definable third language (additional languages on request): | - French - Portuguese - Spanish - Italian - Swedish - etc. |
The third menu language has to be selected and specified with order. All additional Menu languages can be downloaded into the positioner by means of the operation- and configuration software VALcare™. Additional language downloads are available on our homepage.
Position feedback and alarms
Position feedback / valve position | via communication |
Optional 1) | 4 to 20mA position feedback |
Alarms | via communication |
Position alarms | via Communikation |
Hi and Lo alarm Hi/Hi and Lo/Lo alarm Optional 1) |
2 binary outputs |
Hi and Lo alarm Hi/Hi and Lo/Lo alarm Independent feedback: Limit switch (inductive) |
Standard version Security version |
Diagnosis
- local
- Self diagnostics
- Status- and diagnostic messages
- via VALcare™ Valve Diagnostic Software:
- Service Management for planning and scheduling of service intervals
- Histograms for displaying the position- and response history over time
- Partial Stroke Test for the functional inspection of safety related actuators
- Hours in operation, cycle counter and travel sum of the actuator are determined
- Surveillance of loop current
- shows condition of device:
- Potentiometer
- IPMotor
- exceeding range of actuator (possible indication for wear of plug or seat)
- remaining control deviation (possible indication for jammed actuator, blocked valve stem or plug, not sufficient air capacity /supply air pressure /positioning pressure)
- if equipped with pressure sensors (optional):
- Monitoring of the stem friction
- Histograms for displaying the friction-history over time
- surveillance of air supply and output pressure, each with display of physical value
- Additional diagnostical possibilities in control operation by means of external sensors (optional).
- See also the VALcare™ Documentation.
Service plug and IrCom
All basic devices are equipped with a service plug A at the front side. There via RS232 interface a PC with VALcare™ (DTM) can be connected via modem EDC82 (galv. separated, not Ex).
If the SRD is equipped with option “IrCom” B , communication can take place contactless via infrared with the positioner (even with a closed cover!). A modem “IR Interface” (not Ex) connected via RS232 interface to a PC with VALcare™ (DTM) makes communcation possible up a range of approx. 0,5 m.
(If the notebook has an IrDa interface, this cannot be used despite being similartechnology as IrDa instruction set has no communication commands for positioners.)
Manual settings:
Actuatormode | linear or rotary actuator |
Linear valve | left or right mounted |
Rotary actuator | opening clockwise or counter-clockwise |
Characteristic of setpoint | linear, equal percentage, invers- equal percentage or custom (22 points) |
Valve function | opens or closes with increasing setpoint |
Split range | free upper and lower values |
Travel limits | free upper and lower values |
Cutoffs | free upper and lower values |
Stroke range | configurable |
Temperature unit | configurable (°C or °F) |
Autostart | - Endpoints - Standard Autostart - Enhanced Autostart 1) - Smooth response 1) - Fast response 1) |
Control parameters | Determined during Autostart. |
Working range | freely adjustable |
Manual adjustment of | P-gain, I-time, T63-time and dead band |
Manual operation | Manual input of setpoint to drive the valve in steps with 12.5 % or 1 % 1) |
Pneumatic test | Function to test the pneumatic output |
Workshop | input and angle calibation |
LCD language | dependent on version |
LCD orientation | dependent on version |
PROFIBUS-PA | Bus address |
FOUNDATION Fieldbus | Simulation |
If you require further information on this product or would like a quotation, please contact dp-flow on:
email: sales@dp-flow.co.uk
sales +44(0)1608 544222
Supplied by DP-Flow