251G-12E-7, 253 Series Dc Control 1/50-1/4Hp 90/180VDC Nema 4 W/ Option 7
| Property |
Specification |
| Part Number |
251G-12E-7 |
| Product Type |
DC Motor Speed Controller (SCR-based) |
| Series |
250G Series |
| Enclosure Type |
NEMA 4 (Enclosed) |
| Input Voltage |
120/240 VAC ±10% |
| Output Voltage |
0–90 VDC (120 VAC input) / 0–180 VDC (240 VAC input) |
| Output Current |
Up to 1.2 Amps DC |
| Horsepower Range |
1/50 – 1/8 HP @ 90 VDC / 1/25 – 1/4 HP @ 180 VDC |
| Speed Regulation |
±1% of base speed |
| Speed Range |
50:1 |
| Acceleration/Deceleration |
Adjustable (0.5 – 8 seconds) |
| IR Compensation |
Adjustable |
| Current Limit |
Adjustable |
| Field Supply |
100 VDC @ 120 VAC input / 200 VDC @ 240 VAC input (1.0 A max) |
| Operator Controls |
External 5KΩ speed potentiometer (included) |
| Signal Follower Input |
Isolated 4–20 mA input with Auto/Manual switch (loop power not provided) |
| Certifications |
cULus Listed, RoHS Compliant |
| Dimensions (W×H×D) |
5.53" × 7.25" × 2.75" (140.6 mm × 184.2 mm × 69.9 mm) |
| Weight |
Approximately 3.12 lbs (1.415 kg) |
| Manufacturer |
Dart Controls, Inc. |
The 250 Series offers superb flexibility, reliability, and value. A general purpose, economical drive rated to 2HP, the 250 Series is our top-selling enclosed drive. Where most other drives require options to include soft start adjustment, AC line fuse protection and additional heat sink to handle higher HP motors, these are all included in every 253G model as standard features. Reliability is enhanced from the use of a rugged packaged power bridge. Chassis or NEMA 4/12 enclosure styles are available. Many options further extend the 250’s capabilities.
Typical applications include conveyors and material handling, process pumps and
machine tools.
