Motor driven
HSM 1-phase and HTM 3-phase
METREL motor-operated units differ from manual types primarily in the means used to rotate the shaft to vary output voltage. A synchronous motor is used to position the slider. The motor is reversible by means of a SPDT switch (not supplied) and operates on 230 V, 50 / 400 Hz. Integrated limit switches prevent overriding the winding edges.
Typical methods for controlling METREL motor-operated units include:
- Manual increase/decrease switch consists of either momentary-contact push-button or lever-type toggle switch.
- Relays and contactors control the increase/decrease power to the motor as a result of low-level signals from external circuitry. Example: photoelectric cells or thermostat signals can provide the input.
- Process control instrumentation can be used for closed-loop, precise control, and more sophisticated circuitry to provide the raise-fall switching for the motor.
Technical specification
1-phase | HSM 230 | HSM 260 |
Input | 230 V | 230 V |
Output: | 0 V ... 230 V | 0 V ... 260 V |
Current | 3 A ... 32 A | 2.5 A ... 30 A |
Power | 690 VA ... 7360 VA | 650 VA ... 7800 VA |
3-phase | HTM 400 | HTM 450 |
Input | 400 V | 400 V |
Output | 0 V ... 400 V | 0 V ... 450 V |
Current | 3 A ... 32 A | 2.5 A ... 30 A |
Power | 2070 VA ... 22080 VA | 1930 VA ... 23400 VA |
* Maximum current range depends on model type