KMC Controls MEP-4 Series Benutzerhandbuch

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 1 Applications Guide, AN0513A Rev. J

Applications Guide

MEP-4xxx

Direct-Coupled Actuators (40 to 90 in-lb.)

Contents

Introduction.................................................................................................................................... 3

Important Notices........................................................................................................................... 3

Actuator Torque Selection............................................................................................................... 4

Heat/Cool/VAV Applications (with the CTE-5202 Thermostat) ....................................................... 4

Accessories ..................................................................................................................................... 5

Ball Joint and Crank Arms............................................................................................................ 5

Enclosure, Cord Grip, and Wiring Kits......................................................................................... 6

Mounting (Non-Rotation) Brackets.............................................................................................. 7

Thermostat .................................................................................................................................. 7

Transformers................................................................................................................................ 7

VEB-4x Series Valves Mounting/Repair Kits ................................................................................. 8

Troubleshooting .............................................................................................................................. 9

Auxiliary Switch Does Not Work ................................................................................................. 9

Fail-Safe Does Not Work.............................................................................................................. 9

Feedback Does Not Work ............................................................................................................ 9

No Rotation................................................................................................................................. 9

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 2 Applications Guide, AN0513A Rev. J

Rotation in Wrong Direction ....................................................................................................... 9

Stroke Range Is Wrong ................................................................................................................ 9

Conﬁguration................................................................................................................................ 10

Proportional (MEP-4xx2) Models Setup..................................................................................... 10

Wiring Issues ............................................................................................................................. 10

Two-Position Wiring (MEP-4001/3/4/5)..................................................................................... 11

Tri-State/2-Position Rotation Direction...................................................................................... 11

Auxiliary Switch (MEP-4x2x/4x7x) ............................................................................................ 12

Fail-Safe Direction (MEP-42/45/49xx)....................................................................................... 13

Index............................................................................................................................................. 13

Speciﬁcations, design, and operation are subject to change without notice.

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 3 Applications Guide, AN0513A Rev. J

Introduction

This application guide gives torque selection, acces-

sory, troubleshooting, and other related information.

For general mounting, connection, and congura-

tion details, see the relevant model’s installation

guide. For specications and other information,

see the relevant model’s data sheet and the selection

guide. The latest support les are always available

on the KMC Controls web site (www.kmccontrols.

com):

• KMC Actuators Selection Guide

• MEP-4000/4800 Series (40/80 in-lb., proportional

or tri-state) Data Sheet and Installation Guide

• MEP-4200/4500/4900 Series (fail-safe, 25/45/90 in-

lb., proportional or tri-state/two position) Data

Sheet and Installation Guide

• MEP-4201/4501/4901 (fast operating, 25/45/90

in-lb., tri-state/two position) Data Sheet and

Installation Guide

NOTE: For sample proportional single-zone

heating/cooling valve applications using

the CTE-5202 electronic thermostat, see the

CTE-5202 Applications Guide.

NOTE: The models MEP-4101 (tri-state, 10 in-

lb., with transluscent cover) and MEP-

4042/4842 (40/80 in-lb., proportional, with

modular connectors) are quite dierent

from the rest of the MEP-4xxx series. Also,

any particular MEP-4xxx model may

not have one or more features (e.g., fail-

safe, auxiliary switch) described in this

document. Use only the information from

this document that is relevant to the MEP-

4xxx model in use.

Important Notices

The KMC logo is a registered trademark of KMC

publication may be reproduced, transmied, tran-

scribed, stored in a retrieval system, or translated

into any language in any form by any means with-

out the wrien permission of KMC Controls, Inc.

The material in this document is for information

purposes only. The contents and the product it de-

scribes are subject to change without notice. KMC

Controls, Inc. makes no representations or warran-

ties with respect to this document. In no event shall

KMC Controls, Inc. be liable for any damages, direct

or incidental, arising out of or related to the use of

this document.

WARNING

Risk of electrical shock in line-voltage models.

Disconnect ALL power before servicing. More

than one disconnect provided on models

with auxiliary switches. Failure to follow

electrical safety precautions with live electrical

components could result in injury or death.

WARNING

If both conduit connections are used in line-

voltage models, they MUST be externally

connected during installation. The nonmetallic

enclosure does not provide grounding

connection between the two conduit

connections.

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 4 Applications Guide, AN0513A Rev. J

Actuator Torque Selection

Damper manufacturers should provide information

about the required minimum actuator torque. If

that information is not available, use the following

general guidelines to calculate the required torque.

(Square feet for a rectangular duct can be calculated

by multiplying the height and width in inches and

then dividing by 144.)

After minimum torque is known, see the actuator

data sheets to select the appropriate model.

Heat/Cool/VAV Applications (with the CTE-5202 Thermostat)

MEP-4xxx actuators can be used in single zone pro-

portional heating (baseboard heaters) and cooling

(chilled beams) with valves or SCR control as well as

pressure-dependent VAV applications. For details of

a variety of sample applications, see the CTE-5202

Applications Guide.

(For an example of a fail-safe application on an

outside air damper, see Fail-Safe Direction (MEP-

42/45/49xx) on page 13.)

AI1

AO1

AO2

CTE-5202

Thermostat

24 VAC

–

(Phase)

(Neutral)

24VAC

Common

Input

Cooling Valve

24VAC

Common

Input

Heating Valve

AI1

AO1

AO2

CTE-5202

Thermostat

24 VAC @ 5 VA

–

(Phase)

(Neutral)

(5K–10K

Ohm Resistor

between AI1

and Common

for Heating

Mode Only)

NC SPST

Relay

(Override

to Fully

Closed)

MEP-4002

Actuator

24VAC

Common

Input

Out

Chilled

Beam

4-Pipe

Heating

and

Cooling

Pressure Dependent VAV with

Auto and Override to Fully Closed

Damper Type

Opposed Blades Without Seals

Parallel Blades Without Seals

Opposed Blades With Seals

Parallel Blades With Seals

Up to 1000 FPM

3 in-lb. per square foot

4 in-lb. per square foot

5 in-lb. per square foot

7 in-lb. per square foot

1000 to 2500 FPM

4.5 in-lb. per square foot

6 in-lb. per square foot

7.5 in-lb. per square foot

10.5 in-lb. per square foot

2500 to 3000 FPM

6 in-lb. per square foot

8 in-lb. per square foot

10 in-lb. per square foot

14 in-lb. per square foot

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 5 Applications Guide, AN0513A Rev. J

Accessories

KIT INCLUDES:

(1) Crank Arm

(2) 1/4-28 X 3/4" Cap Screws

(2) 1/4-28 Hex Nuts

(2) VTD-0804 Ball Joints

5/16" Dia. Rod

(not included)

VTD-0804

Ball Joints

Crank

Arm

1/4-28X3/4"

Cap Screw

1/4-28

Hex Nut

(Not included)

(3) Mounting Holes

for #8 screws (not included)

The HLO-4001 crank arm

kit is used when direct

mounting of the actuator

is impractical. See also the

VTD-0804 replacement

ball joint and VTD-

14xx crank arms.

The VTD-0804 replace-

ment ball joint is for side-

mounted 5/16" diameter

rods (1/4-20 male mount-

ing stud with locknut). See

also the HLO-4001 crank

arm kit.

Sloed crank arms are for aaching to dampers

or other shafts, and they can be used in conjunc-

tion with the HLO-4001 crank arm kit. In the VTD-

1403/1404 short crank arms, an aached ball joint

(see the VTD-0804) can be adjusted from 3/4 inches

(minimum) to 2-7/8 inches (maximum) from the cen-

ter of the shaft. In VTD-1405/1406 long crank arms,

the maximum is 4-5/8 inches.

VTD-1403 Short sloed, for 3/8" shafts

VTD-1404 Short sloed, for 1/2" shafts

VTD-1405 Long sloed, for 1/2" shafts

VTD-1406 Long sloed, for 3/8" shafts

Three-hole crank arms are for aaching to dampers

or other shafts, and they can be used in conjunction

with the HLO-4001 crank arm kit. An aached ball

joint (see the VTD-0804) can be 1-9/16 inches (inner

hole), 2-3/16 inches (middle hole), or 2-7/8 inches

(outer hole) from the center of the shaft.

VTD-1414 Three-hole, for 3/8" shafts

VTD-1415 Three-hole, for 1/2" shafts

Ball Joint and Crank Arms

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 6 Applications Guide, AN0513A Rev. J

The HCO-1151 enclosure kit (consisting of a metal

mounting plate, plastic cover, non-rotation bracket,

plug caps, and screws) is designed to protect actua-

tors from inclement conditions. See also the HMO-

4521 liquid-tight cord grip.

An HMO-4521 liquid-tight cord grip threads into

conduit ings on MEP-4xxx actuators (except the

MEP-4003) when an ingress protection rating of

IP54 is required. The HMO-4521 accepts 0.18 to 0.40"

diameter cables. There are ve per pack. See also the

HCO-1151, HPO-4001, and HPO-4051.

Enclosure, Cord Grip, and Wiring Kits

An HPO-4001 assembled wiring kit has an HMO-

4521 liquid-tight cord grip, a 3-foot plenum-rated

cable, conduit ing, and a pre-wired terminal block

for the following actuators:

• MEP-4001

• MEP-4002

• MEP-4801

• MEP-4802

NOTE: It is not compatible with the MEP-40x3,

MEP-402x, MEP-4813, and MEP-482x

actuators. However, the HMO-4521 cord

grip can be installed on those models

(except for the MEP-4003) to provide IP54-

rated ingress protection.

An HPO-4051 assembled wiring kit has an HMO-

4521 liquid-tight cord grip, a 3-foot plenum-rated

cable, and a conduit ing for the following actua-

tors:

• MEP-4201

• MEP-4501

• MEP-4901

• MEP-4x51

• MEP-4x52

• MEP-4x54

NOTE: It is not compatible with the MEP-4x55 and

MEP-4x7x actuators, which are pre-wired

with cables. However, the HMO-4521 cord

grip can be installed on those models to

provide IP54-rated ingress protection.

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 7 Applications Guide, AN0513A Rev. J

An HMO-4002 non-rotation bracket is provided

with MEP-40xx/48xx/425x/455x actuators (but is not

for use with MEP-427x/457x/49xx models). See also

the HMO-4001.

The HMO-4001 non-rotation “T” bracket can be used instead of the HMO-4002 to span an open distance, or

it can be formed (bent) into a shape that increases the distance between the mounting surface and the actua-

tor. It is provided with MEP-427x/457x/49xx actuators.

The HMO-4004 non-rotation bracket kit is used for

mounting to ball valves.

Non-Rotation “T” Bracket (HMO–4001) Order Separately

9" [229]

3/4" [19]

Non-Rotation Bracket (HMO–4002) Provided

9" (229 mm)

3/4" (19 mm)

An XEE-6000 series Class-2 transformer provides 24

VAC power to the actuator:

XEE-6111-050 120 to 24 VAC, 50 VA, single-hub

XEE-6112-050 120 to 24 VAC 50 VA, dual-hub

For sample proportional single-zone heating/cooling

and pressure-dependent VAV applications using the

CTE-5202 electronic thermostat, see the CTE-5202

Applications Guide.

Thermostat Transformers

Mounting (Non-Rotation) Brackets

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 8 Applications Guide, AN0513A Rev. J

The HPO-5073 repair kit is designed to replace link-

ages on VEP-43/45/83/85 and VEB-43/46 ball valves

for use with any standard (not quick-mounting “V”

series) MEP-4xxx actuator:

• VEP-43ABB7xx through VEP-43GBB7xx

• VEP-45A1x7xx through VEP-45H4x7xx

• VEB-43/46 series ending in CK or CF

Hardware for mounting the linkage to the valve, and

the actuator to the linkage, are included with the kit.

The actuator must be ordered separately.

Handle

Shaft

High-Low Screws

Cover

Sub Shaft

Thermal Break

Machine Screws

Plate Mount

Non-Rotation Bracket

Screw

The HPO-5074 kit is for adapting valve bodies for

use with (only) “quick mounting” MEP-4xxxVactu-

ators. MEP-4xxxV actuators have an aached handle

and shaft as well as a plastic mounting bracket on

the boom of the actuator. See the relevant data

sheet for more information.

Beaded Tie

Locking

Bail/Clip

Valve Base

12 mm Screws

(VFB-4303_SX Bodies

and VEB-4303_SDL Valves)

15 mm Screws

(VFB-4____BX Bodies

and VEB-4____B__ Valves)

HPO-5074

assembled on

a Valve Body

and an MEP-

4xxxV Actuator

VEB-4x Series Valves Mounting/Repair Kits

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 9 Applications Guide, AN0513A Rev. J

Troubleshooting

Auxiliary Switch Does Not Work

• Check the auxiliary switch seing. See Auxiliary

Switch (MEP-4x2x/4x7x) on page 12.

• Check the wiring. (See Wiring Issues on page

10.)

Fail-Safe Does Not Work

• After initial connection or reconnection to power

on MEP-42x2/45x2/49x2 proportional models,

proper fail-safe operation might be delayed

up to 30 seconds (until the capacitors are fully

charged).

• Check the Fail-Safe Direction switch. See Fail-

Safe Direction (MEP-42/45/49xx) on page 13.

Feedback Does Not Work

• Check the feedback switch seing. See Propor-

tional (MEP-4xx2) Models Setup on page 10.

• Check the wiring. (See Wiring Issues on page

10.)

No Rotation

• After initial power-up, proportional fail-safe

MEP-42x2/45x2/49x2 actuators delay enabling

motor operation until the fail-safe capacitors are

charged. No actuator rotation will take place for

at least the rst 30 seconds.

• Check that direction switches are fully engaged

in the proper position. See Proportional

(MEP-4xx2) Models Setup on page 10 and

Tri-State/2-Position Rotation Direction on page

11.

• Check that the shaft moves freely. (Press and

hold the gear disengagement lever and manually

rotate the shaft.)

• Check for a tripped circuit breaker to the trans-

former (or power supply).

• Check polarity and strength of input signal.

• Check for proper supply voltage from the trans-

former (or power supply) and that it has enough

capacity (VA) for all connected devices. See their

respective data sheets and Tips for Connecting

24-Volt Power Application Note (AN0604D).

• Check the wiring. (See Wiring Issues on page

10.)

Rotation in Wrong Direction

• For proportional models, check the position of

the direction switch (Switch 2). See Proportional

(MEP-4xx2) Models Setup on page 10.

• For tri-state and tri-state/two-position mod-

els, check the CW/CCW wiring and rotation

direction switch if applicable. See Tri-State/2-

Position Rotation Direction on page 11.

• For fail-safe operation, check the Fail-Safe

Direction switch. See Fail-Safe Direction (MEP-

42/45/49xx) on page 13.

Stroke Range Is Wrong

• For proportional models, check the auto-

mapping. See Proportional (MEP-4xx2) Models

Setup on page 10.

• Check the adjustable stop.

• Check the voltage from the controller or thermo-

stat.

MEP-4xxx Direct-Coupled Actuators (40 to 90 in-lb.) 10 Applications Guide, AN0513A Rev. J

WARNING

Risk of electrical shock in line-voltage models.

Disconnect ALL power before servicing. More

than one disconnect provided on models

with auxiliary switches. Failure to follow

electrical safety precautions with live electrical

components could result in injury or death.

WARNING

If both conduit connections are used in line-

voltage models, they MUST be externally

connected during installation. The nonmetallic

enclosure does not provide grounding

connection between the two conduit

connections.

Wiring Issues

• Check for correct wiring for the application.

• Check the wiring at the connected devices.

• Use a voltmeter and ohmmeter to check the

terminals for expected values.

• See Tips for Connecting 24-Volt Power Applica-

tion Note (AN0604D).

NOTE: Wiring must be adequate to avoid exces-

sive voltage drop on long runs! Allow

plenty of “cushion” in measurements. A

meter may be too slow to register tran-

sient dips or peaks during startup.

Conﬁguration

Proportional (MEP-4xx2) Models Setup

NOTE: Before Jan. 2014, MEP-40x2/48x2

proportional models had 0–10 VDC inputs

and 0–5 or 0–10 VDC feedback (only).

From 2014 through July 2015, they had

2–10 VDC inputs and 1–5 or 2–10 VDC

(only) feedback instead. Starting in August

2015, all these options were available and

selectable via a jumper and slide switch.

NOTE: Before August 2015, the MEP-

42xx/45xx/49xx fail-safe proportional

models had 2–10 VDC inputs and 1–5 or

2–10 VDC feedback (only). Starting in

August 2015, 0–10 VDC inputs and 0–5 or

0–10 VDC feedback were also available and

switch-selectable.

NOTE: When the 0–10 VDC input is selected,

selectable feedback options are 0–5 or 0–10

VDC. When the 2–10 VDC input is selected,

feedback options are 1–5 or 2–10 VDC.

For instructions in direction, feedback, and au-

tomapping, see the relevant installation guide:

• MEP-4000/4800 Series (40/80 in-lb.) Installation

Guide

• MEP-4200/4500/4900 Series (fail-safe, 25/45/90

in-lb.) Installation Guide

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