Product Overview

Accessories
CME-7001 Auxiliary switch, single SPDT
CME-7002 Auxiliary switch, dual SPDT
HCO-1152 Weather shield enclosure kit
HLO-1020 Crank arm kit
HMO-4535 Replacement non-rotation bracket
HMO-4536 Adjustable end stop kit
Description and Application
These powerful, ecient, durable, direct-coupled
actuators provide tri-state or proportional control for
large control dampers or valves in HVAC systems. A
minimum torque of 180 or 320 in-lb. is available over
the 94° angular rotation. Capacitor-driven fail-safe
models provide ecient operation with switch-
selectable fail direction.
The proportional actuator models accept a 2–10
VDC or 4–20 mA control signal input from a ther-
mostat, controller, or building automation system.
“Anti-jier” circuitry signicantly reduces hunting
and needless wear (from unnecessary miniscule
position changes caused by undamped analog input
signals) on the actuator and valve packing or damp-
er components. A user-initiated, auto-mapping
feature provides more precise equipment control by
reassigning the (2–10 VDC or 4–20 mA) input signal
range over a reduced rotation range. These models
also feature a switch-selectable, 1–5 or 2–10 VDC
voltage feedback output that is proportional to the
actuator position.
The tri-state models are designed for use with oat-
ing thermostats, controllers, or building automation
systems. They feature an optional 10K ohm (±10%),
three-wire potentiometer feedback output. Fail-safe
models also allow two-position control as well.
All actuators mount directly on 3/8" up to 1.05"
round or 5/16" up to 5/8" square shafts, eliminating
the need for expensive and complicated linkages. A
non-rotation bracket, to prevent lateral movement, is
included with each actuator. A gear disengagement
buon allows manual positioning of the shaft with-
out energizing the actuator. Removable terminals
and 1/2" NPS conduit ings make wiring easier.
The actuators are protected against overloading and
do not require end or limit switches.
Description and Application 1
Accessories 1
Features 1
Models 1
Dimensions 2
Specifications 2
Specifications and design subject to change without notice.
MEP-7500/7800 Series
Direct-Coupled, ControlSet
®
Actuators (180/320 in-lb.)
Features
◆ More powerful and less load-dependent (reduced
spread between no-load and full-load timing)
than earlier MEP-1200/7000/7700 series actuators
they replace
◆ Proportional models include “anti-jier” circuitry
and optional auto-mapping of the full input sig-
nal range over a reduced actuator stroke
◆ Ecient, durable, capacitor-driven fail-safe op-
tion with switch-selectable direction provides
consistent torque in both powered and fail-safe
modes
◆ Potentiometer or voltage feedback option
◆ Removable terminals and 1/2" conduit ings
◆ Direct mounting to standard shaft sizes, and a
gear disengagement buon for manual shaft po-
sitioning
Models
Model #
Torque Control Built-in Options
180 in-lb. min.
(20 N•m)
320 in-lb. min.
(36 N•m)
Tri-state
(Floating)
2–10 VDC or 4–20
mA Proportional
Feedback: 10K ohm
Potentiometer
Feedback: 1–5 or
2–10 VDC
Fail Safe (Switch
Selectable Direction)
MEP-7x01
7500
series
(x=5)
7800
series
(x=8)
4
MEP-7x02
4 4
MEP-7x03
4 4
MEP-7x51
4 4
MEP-7x52
4 4 4
MEP-7x53
4 4 4
MEP-7200 series (120 in-lb.) has been discontinued. Use an MEP-
75xx (180 in-lb.)—or, if less torque is required, an MEP-48xx (80
in-lb., non-fail-safe) or MEP-49xx (90 in-lb., fail-safe) instead.
MEP-7500 series (180 in-lb.) replaces MEP-7000 series (150 in-lb.)
MEP-7800 series (320 in-lb.) replaces MEP-7700 series (300 in-lb.)