Output Torque and Timing
| MODEL # | TORQUE (LB-FT) |
STROKE TIME (SEC./90°) (60 HZ) |
STROKE TIME (SEC./90°) (50 HZ) |
|
31-M50, 31-350, 31-250
|
30
|
24
|
29
|
|
31-M30, 31-330, 31-230
|
15
|
18
|
22
|
Specifications Common to All Models:
| Drive Power | 120 Vac, single-phase, 50 or 60 Hz, 0.5A, 60 Watts |
| Operating Conditions | –40° to 65° C, (–40° to 150° F) 0 to 99% relative humidity |
| Action on Loss of Power | Stays in place |
| Handwheel | Provides manual operation without electrical power. Non-rotating during automatic operation, does not require declutching mechanism |
| Motor | 120 V ac, single-phase, no burnout, noncoasting. Capable of 60 starts per minute |
| Gear Train | Precision cut, heat-treated alloy steel and ductile iron. Self-locking and self-releasing, able to hold position at 150% rated torque |
| Mechanical Stops | Prevent overtravel during automatic or manual operation. Mechanical stops are external to the drive |
| Drive Net Weight | 25 lbs |
| Max. Overhung Load | 500 lbs |
Switches
Cam controlled, field adjustable. Two limit switches (S3 & S4) open the motor circuit at end-of travel limits. Two auxiliary switches (S1 & S2) provied external signaling as specified through connections made at the terminal board. All four switches are SPDT and are rated for 1 amp at 120 V ac.
Enclosure
Precision machined aluminum alloy castings, painted with corrosion resistant polyurethane paint. All units meet NEMA 4 specifications and are also available FM approved for use in CLass 1, Div. 1, Group D; Class II, Div. 1, Groups E, F, & G; and Class III, Div.’s 1 & 2 hazardous locations.
| SPECIFICATIONS FOR CONTROL OPTION 3 DRIVES (MODELS 31-M50 AND 31-M30): | SPECIFICATIONS FOR CONTROL OPTION 2 DRIVES (MODELS 31-350 AND 31-330): | |
| Demand Input Signal Range | 4–20 mA OR 1–5 V dc | – |
| Signal Span Adjust | 50% to 125% of 4 V span | – |
| Signal Zero Adjust | Up to 120% of span Split Signal Range: 4-12 mA or 12-20 mA |
– |
| Deadband | 1% of span | – |
| Sensitivity | 0.2% of span | – |
| Feedback Signal * | 4–20 mA OR 1–5 V dc | 4–20 mA OR 1–5 V dc |
| Output Stability for Temperature Change |
+/- 0.03%/°C of span for -40°C to 50°C | +/- 0.03%/°C of Span for -40°C to 50°C |
| Stall Relay Contacts | Form A, 10 volt-amps at 120 V ac or dc | – |
| Action on Loss of Input Signal (Power On) | Stays in place or runs to any preset position (configurable). | – |
| Action on Stall | Relay contacts open after 68 seconds of stall, remote signal available. Power to motor is turned off. | – |
| Handswitch | Permits local operation, independent of controller signal. The handswitch is located beneath the control module cover on the control board. | – |