Quarter-turn (Part-turn) Electric Actuators / OM Series
OM-A
- Torque: 50 Nm/445 in-lb
- Motor Power: 10 W
- Manual Override: N/A
- Mounting Flange: ISO 5211 F05/F07
- Speed: 27 sec/90° (110VAC @60 Hz, 30% duty cycle)
- Weight: 3 kg/6.6 lb
| Item | OM-A |
|---|---|
| Torque (Nm) | 50 |
| Torque (in-lb) | 445 |
| Size of Output Drive (mm) | 🟐17 |
| Depth of Output Drive (mm) | 20 |
| Flange (ISO 5211) | F05 / F07 |
| Run Time (sec / 90°) | 27 |
| Manual Override | N/A |
| Weight (kg) | 3 |
| Weight (lb) | 6.6 |
Enclosure
- Polyester powder-coated aluminum alloy.
- NEMA type 4X, IP66 & IP67, intended for outdoor use.
- ISO 12944-2 Corrosivity category C3. C4/C5 is optional.
Motor
- Insulation class F
- Built-in thermal protector prevents the motor from overheating and burnout.
- Thermal trip temperature:
AC motor: 125±5℃ (257±9℉)
DC motor: 90±5℃ (194±9℉)
Duty Cycle
- Standard: 30% duty cycle
- Optional: 75% duty cycle
Position Indication
- A mechanical position indicator is located on the top of the actuator.
Gear Train
- High-alloy steel planetary gears are used, and a self-locking function is provided.
- The gears are lubricated for life with high-temperature grease.
Conduit Entry
- Standard: 1/2" PS
- Optional: 1/2" PF, 1/2" NPT, M20
Voltages
- 12V AC, 12V DC
- 24V AC/DC
- 110 - 120V AC
- 220 - 240V AC, 1 Phase
Travel Angle
- Standard: 0° to 90°
Operating Condition
- Ambient temperature: -30℃ to +65℃ (-22℉ to +149℉)
- Relative humidity: 30% to 95%
- CE
- CSA
Anti-condensation Heater
The heater warms actuators to prevent lubricant freezing and moisture damage.
● Not recommended if ambient temperature exceeds 35℃ (95℉).
● For large day/night or seasonal temperature variations, use with a thermostat is recommended.
Heater Thermostat
Heater thermostat switches of f the heater when the internal temperature of actuators is higher than 25±5˚C (77±9˚F).
Auxiliary Limit Switches
Actuators come standard with two limit switches, LS1 for fully-open and LS2 for fully-closed positioning. Two auxiliary limit switches (LS3 & LS4) are optional for fully-open and fully-closed position feedback.
Analog Output
Recommended to use with an on-off/floating actuator for position indication.
● Analog output: 0-20 mA, 4-20 mA, 0-5 V, 0-10 V, 1-5 V, and 2-10 V.
＊ This image shows 110/220V AC version.
Modulating Control
A proportional control unit, including analog input (AI), analog output (AO), and a 5kΩ potentiometer.
● Analog input: 4-20 mA, 1-5 V, and 2-10 V
● Analog output: 4-20 mA and 2-10 V
＊ This image shows the 110/220V AC version.
Extended Duty Cycle Kit (including motor)
This option is recommended for extending the actuator's duty cycle.
＊ This image shows the 110/220V AC version.
Potentiometer
Recommended to use with a floating actuator to output signal for position indication.
● Two resistance values, 1k ohm or 5k ohm for selection.
Isolation Relay Module
When using one control switch to operate two or more actuators, the isolation relay module is recommended.
Communication Protocol
Modbus RTU RS485.
● Applicable to 24V AC/DC, 110-120V AC, or 220-240V AC; 75% duty cycle.
Local Control Unit (LCU)
Two rotary selector switches are provided, LOCAL/REMOTE and CLOSE/OFF/OPEN. In LOCAL mode, the valves are directly being controlled in the field and can be operated to close, stop or open by using CLOSE/OFF/OPEN selector switch.
● Standard: IP65
● Optional: IP67
Junction Box
Junction box enables external electrical connection to be done without removing actuator cover.
Thermal Insulation Blanket
The thermal insulation blanket enables the actuator to remain operational after prolonged exposure to high temperatures. Its jacket design allows for easy removal and reinstallation.
● Working conditions:
－ Withstand exposure to 250°C (482°F) for 2 hours.
－ Withstand exposure to 300°C (572°F) for 1 hour.
● Applicable to on-off units.
