- CE-certified
- Automatic alignment with stall-sensing circuitry - no mechanical microswitches
- Manual control or remote control via contact closures or TTL logic level signals
- RS-232 bidirectional communication (optional RS-485)
- High speed switching - < 100 ms in EQ model
- Universal power supply, 110/230 VAC to 24 VDC
| Product numbers for: | Actuators |
| RS-232 interface cable | |
| Multi-drop cables to control multiple actuators | |
| Plug-and-play cables |
The two position microelectric actuator features exclusive stall-sensing circuitry which eliminates problems associated with valve/actuator misalignment. Power to the actuator motor is switched off when the driver pin goes against the stop of the valve cutout - no sooner, no later - and it's all done without any mechanical microswitches. Not only does this mean that alignment problems are a thing of the past, it means that you can stock one actuator for valves that turn 30°, 36°, 45°, 60°, 90°, or anything in between.
During initialization, the valve rotates at moderate speed while the actuator waits to sense the stall. Once the rotation angle has been measured and confirmed by repetition, the angle is memorized and actuation takes place at maximum speed. Valve position memory is maintained even in the event of a power failure.
Some valves are harder or easier than others to rotate, so we
offer five microelectric models with a range of torque specs. As the figure at right illustrates, actuator speed and torque are inversely
proportional. WHICH MODEL DO I NEED? 
Two position microelectric actuators
Standard voltage 24 VDC. Autosensing 24 VDC power supply is included.
| Model | Hardware | Product No. |
|---|---|---|
| EQ Highest speed |
closemount | EQ |
| 2" standoff | EQ2 | |
| 3" standoff | EQ3 | |
| 4" standoff | EQ4 | |
| 6" standoff | EQ6 | |
| for use w/existing standoff | EQS | |
| EH High speed |
closemount | EH |
| 2" standoff | EH2 | |
| 3" standoff | EH3 | |
| 4" standoff | EH4 | |
| 6" standoff | EH6 | |
| for use w/existing standoff | EHS | |
| EP Medium torque |
closemount | EP |
| 2" standoff | EP2 | |
| 3" standoff | EP3 | |
| 4" standoff | EP4 | |
| 6" standoff | EP6 | |
| for use w/existing standoff | EPS | |
| ED High torque |
closemount | ED |
| 2" standoff | ED2 | |
| 3" standoff | ED3 | |
| 4" standoff | ED4 | |
| 6" standoff | ED6 | |
| for use w/existing standoff | EDS | |
| ET Highest torque |
closemount | ET |
| 2" standoff | ET2 | |
| 3" standoff | ET3 | |
| 4" standoff | ET4 | |
| 6" standoff | ET6 | |
| for use w/existing standoff | ETS |
RS-232 interface cable
An RS-232 cable is required for controlling an actuator from a computer serial port.
| Description | Product No. |
|---|---|
| RS-232 interface cable | I-22697 |
Multi-drop cables
Multi-drop cables permit a single serial port to control multiple microelectric two position and multiposition actuators. Multi-drop cables have one female DB9 connector and 2 to 8 male DB9 connectors and are approximately 6" long.
Note: An RS-232 interface cable (I-22697) is required for each actuator controlled serially.
| No. of actuators to be controlled |
Product No. |
|---|---|
| 2 | I-22897-02 |
| 3 | I-22897-03 |
| 4 | I-22897-04 |
| 5 | I-22897-05 |
| 6 | I-22897-06 |
| 8 | I-22897-08 |
Plug-and-play cables
Plug-and-play cables will allow a direct connection and control between a specific instrument and a two position microelectric actuator. Contact technical support for cables for other instruments.
| Instrument | Product No. |
|---|---|
| Agilent 6890 GC | V-RA-24VDC-HP6890 |
| Agilent 7890 GC | V-RA-24VDC-HP6890 |
| Varian 3800 GC | V-RA-24VDC-VA3800 |
| Agilent 1100 LC | V-RA-5VDC-HP1100 |
| Waters Alliance LC | V-RA-5VDC-WA2690 |
