MEP-7551
Details
Details
MEP-7551 Direct-Coupled Actuator, 180 lb-in, Tri-State, Electronic Fail-Safe
Rotary actuator for large dampers or valves, mounted directly on shafts up to 1.05 in. round. Floating control; on power loss a capacitor drives it to the switch-selected end, and it can be wired for two-position control. It replaces the MEP-70xx (150 lb-in) series and the discontinued MEP-72xx (120 lb-in) series.
Key Features
- Torque: 180 lb-in (20 N-m)
- Motor timing: 90-115 sec., load dependent
- Supply power: 8 VA (25 VA peak while initializing)
Product Specifications
| Manufacturer | KMC Controls |
|---|---|
| Model | MEP-7551 |
| Type | Direct-coupled rotary actuator, capacitor fail-safe |
| Torque | 180 lb-in (20 N-m) |
| Control | Tri-state (floating) at supply voltage (24 VAC or 22-35 VDC); can also be wired for 2-position |
| Fail-safe | Capacitor driven, switch-selectable CW, OFF, or CCW |
| Fail-safe timing | 80-115 sec.; up to 40 sec. delay while the capacitor charges after first power-up |
| Supply voltage | 24 VAC (+20%/-15%) or 22-35 VDC, Class 2 |
| Supply power | 8 VA (25 VA peak while initializing) |
| Motor timing | 90-115 sec., load dependent |
| Rotation | 94 deg, adjustable with HMO-4536 stop kit |
| Shaft mounting | 3/8 to 1.05 in. round or 5/16 to 5/8 in. square shaft, V-bolt and HMO-4535 non-rotation bracket (supplied); shaft at least 2.5 in. |
| Features | Gear disengagement button and overload protection |
| Connections | Removable terminals, 14-22 AWG; 1/2 in. NPS conduit fittings |
| Enclosure | Flame-retardant polymer, NEMA 2 and IP54 (with HMO-4521 or HPO-7001) |
| Dimensions | 10-1/8 x 5 x 3 in. |
| Operating limits | -22 to 131 deg F (-30 to 55 deg C), 5 to 95% RH non-condensing |
| Approvals | UL 873; FCC Class B |
| Accessories | CME-7001/7002 auxiliary switches, HLO-1020 crank arm kit, HCO-1152 weather shield, HMO-4536 stop kit |
| Siblings | MEP-7552: proportional; MEP-7553: tri-state with 10k feedback; MEP-7501: non-fail-safe; MEP-7851: 320 lb-in |