KMC Controls MEP-7800 Series User Manual

Installation guide, Direct-coupled controlset

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MEP-7200/7500/7800 Series

1

Installation Guide

Installation Guide

Mounting 1
Wiring (General) 2
Wiring (Master/Slave)

2

Direction, Feedback, & Auto-Mapping (Proportional MEP-7xx2 Models) 3
Fail-Safe Direction (MEP-7x5x) 4
Maintenance 4
Accessories 4
Specifications 4
Applications 4
Important Notices 4
More Information 4

Mounting

Illustration 1—Overview (Direct-Coupled Mounting)

1. Ensure that the damper can move freely through

its entire range of motion, and fix any binding

before installing the actuator. Turn the damper

blade to its fully closed position.

2. Press and hold the gear disengagement button

(see Illustration 1), rotate the actuator to the fully

closed position, and release the button.

NOTE: Depending on the damper-seal design,

backing the actuator off its stop

approximately 5° may provide tight

damper shut-off.

3. Depending on the size of the shaft, use the

optional shaft insert as is, reverse it, or remove it.

Slide the actuator onto the shaft.

4. Leaving a gap between the actuator and

mounting surface to prevent any binding, finger-

tighten the nuts on the V-bolt.

5. Insert the non-rotation bracket (supplied HMO-

4535) into the slot at the base of the actuator.

6. Secure the non-rotation bracket with two (2) #8

self-tapping screws.

NOTE: The two holes at the top of the actuator are

not for use in direct-coupled applications.

They are for remote mounting, such as with

the optional HLO-1020 Crank Arm Kit. (For

accessory information, see the

MEP-7xxx

Applications Guide

.)

7. Evenly tighten the V-bolt nuts to 110 to 120 in-

lb. while keeping the shaft insert centered and

square.

8. Verify the operation of the actuator through its

full rotational cycle.

5"

8"

2-7/16"

3/8"

3"

10 1/8"

Gear disengagement button

Position insert as

shown for 3/8"
to 9/16" round

shafts or 5/16"

to 3/8" square

shaft (1/2" round

shafts on center)

Position insert as

shown for 5/8"

to 13/16" round

shafts or 1/2"

to 5/8" square

shafts (3/4"

round shafts on

center)

Remove insert

for 7/8" to

1.05" round

shafts (1.05"
round shafts

on center)

INSERT

POSITION INSERT AS SHOWN FOR

3/8" to 9/16" ROUND SHAFTS or

5/16" to 3/8" SQUARE SHAFTS.

(1/2" ROUND SHAFTS ON CENTER)

INSERT

POSITION INSERT AS SHOWN FOR

5/8" to 13/16" ROUND SHAFTS or

1/2" to 5/8" SQUARE SHAFTS.

(3/4" ROUND SHAFTS ON CENTER)

REMOVE INSERT FOR

7/8" to 1.05" ROUND SHAFTS.

(1.05" ROUND SHAFTS ON CENTER)

HMO-4535 non-rotation

bracket (provided)

INSERT

POSITION INSERT AS SHOWN FOR

3/8" to 9/16" ROUND SHAFTS or

5/16" to 3/8" SQUARE SHAFTS.

(1/2" ROUND SHAFTS ON CENTER)

INSERT

POSITION INSERT AS SHOWN FOR

5/8" to 13/16" ROUND SHAFTS or

1/2" to 5/8" SQUARE SHAFTS.

(3/4" ROUND SHAFTS ON CENTER)

REMOVE INSERT FOR

7/8" to 1.05" ROUND SHAFTS.

(1.05" ROUND SHAFTS ON CENTER)

Shaft insert

INSERT

POSITION INSERT AS SHOWN FOR

3/8" to 9/16" ROUND SHAFTS or

5/16" to 3/8" SQUARE SHAFTS.

(1/2" ROUND SHAFTS ON CENTER)

INSERT

POSITION INSERT AS SHOWN FOR

5/8" to 13/16" ROUND SHAFTS or

1/2" to 5/8" SQUARE SHAFTS.

(3/4" ROUND SHAFTS ON CENTER)

REMOVE INSERT FOR

7/8" to 1.05" ROUND SHAFTS.

(1.05" ROUND SHAFTS ON CENTER)

5"

8"

2-7/16"

3/8"

3"

10 1/8"

Conduit

fitting

plate

and red

plugs

Direct-Coupled ControlSet

®

Actuators (120/180/320 in-lb.)

MEP-7200/7500/7800 Series

NOTE: Before 2014, MEP-7xx2 proportional

models had 0–10 VDC inputs and 0–5 or

0–10 VDC feedback. Starting in Jan. 2014,

they have 2–10 VDC inputs and 1–5 or

2–10 VDC feedback instead.

NOTE: The MEP-7200 series (120 in-lb.) was

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.

Shaft insert

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