Schneider Electric AM-321, AM-332, AM-341, AM-342 Data Sheet

Application

AM-321, AM-332

AM-341, AM-342

These actuator accessory kits are designed for installation on MC, MF, MP, MU, and MUP type oil-submerged gear train actuators. The accessory kits are coupled to the rear of an actuator output shaft by means of an interlocking drive disc.

Features

• Potentiometers provide accurate feedback of

actuator

position for indication and precision control

AM-321, AM-332 AM-341, AM-342

Accessory Kits

General Instructions

• Adjustable differential SPDT auxiliary switches may

adjusted to operate at any point in the actuator

stroke for maximum application flexibility

Applicable Literature

• Cross-Reference Guide, F-23638

• Reference Manual, F-12683

• Application Manual, F-21335

• Electric/Electronic Products Catalog, F-27382

• AM-348 Accessory Kit Mounting Bracket General

structions, F-10538

• MC-351, MC-421, MC-431, MC-4311 Three-Wire,

wo-Position Actuators General Instructions

F-

8366

• MP-3XX Series, MP-4XX Series, MP-2XXX Series,

d MP-4XXX Series Reversible and Proportio

Electr

ic Actuators General Instructions, F-15479

nal

SPECIFICATIONS

Outputs

Environment

Auxiliary Switch:

AM-321, 341, 342, Snap-action SPDT switches. AM-321 and AM-342 contain two auxil-

iary switches, and AM-341 contains four auxiliary switches. The setting of each switch is adjustable, using the wrench included. The differential of each switch is adjustable, with a minimum differential of 9°.

Potentiometer:

AM-332, 342, Spring-loaded, friction-driven copper wiper arm with a contact that rides on

a uniformly wound wire resistance card.

Resistance Card, Resistance of 100 Ω; use with a power supply not to exceed 25 Vac. Electrical capacity of 3 watts.

Connections: Coded screw terminals. Mounting: To back of actuator, or AM-348. Case: Aluminum. 1/2" conduit knockouts on right and left hand sides. Ratings (All models except AM-332), Refer to Table-1.

Ambient Temperature Limits:

Shipping & Handling, -40 to 176° F (-40 to 80° C). Operating, -22 to 122° F (-30 to 50° C).

Humidity: 5 to 80% relative humidity, non-condensing.

Table-1 Electrical Ratings for Access or y Kits with Electrical Switches.

Part

Number

AM-321 AM-341 AM-342

ACCESSORIES

None

TOOLS

Screwdriver to install the screws which secure the accessory kit to the actuator or mounting bracket.

Full Load Amps Locked Rotor Amps Non-Inductive Amps

120 Vac 240 Vac 120 Vac 240 Vac 120 Vac 240 Vac

5.8 2.9 34.8 17.4 15 7.5 2000 VA

Max. Total Load

Not to

Exceed

INSTALLATION

 W A R N I N G

 C A U T I O N

Inspection

Requirements

Inspect the package for damage. If damaged, notify the approp riate carrier immediately. If undamaged, open the package and inspect the device for obvious damage. Return damaged products.

• Tools (not provided): Appropriate screwdriver for accessory kit mounting screws

• Training: Installer must be a qualified, experienced technician

• Appropriate accessories

• Wiring diagrams

• Disconnect the power supply (line power) before installation to prevent injury and equip-

ment damage.

• Make all connections in accordance with national and local electrical codes and the wir-

ing diagram.

• Use copper conductors only.

• Do not exceed the ratings of the device(s).

• Do not apply power to the unit unless the damper linkage and/or the valve assembly have

been installed.

• Avoid locations where excessive moisture, corrosive fumes, or vibration is present.

• Do not install insulation on any part of the actuator.

Mounting

The AM-321, AM-332, AM-341 and AM-342 accessory kits can be mounted onto the MC, MF, MP, MU and MUP type oil-submerged gear train actuators.

To mount an accessory kit onto a nonspring-return actuator, proceed as follows:

1. Remove the actuator terminal cover and remove the four screws which secure the actuator back plate. Discard the back plate.

2. Remove the cover from the accessory kit.

3. Align, on the actuator, the back plate supplied with the accessory kit.

4. Align the interlocking drive discs on the accessory k disc features one drive lug that is larger than the other, to ensure proper alignment. Assemble the accessory kit to the actuator so that the drive discs are engaged. Secure the accessory kit to the actuator with the four screws obtained when the actuator back plate was removed.

5. Replace the cover onto the accessory kit.

To mount an accessory kit onto a spring-return actuator, proceed as follows:

1. Remove and discard the back plate which comes assembled to the accessory kit.

2. Remove the four external screws from the face of the actuator

Do not remove the screws which have anti-backup heads from the actuator. These screws are used to secure the cover which retains the return spring in the casting.

it and the actuator. Note that each

’s spring-return housing.

3. Engage the drive discs on the accessory kit and the actuator. Note that each disc features one drive lug that is larger than the other accessory base holes with those on the spring-return housing. Secure the accessory kit to the housing with the four screws previously removed from the spring-return case.

, to ensure proper alignment. Align the

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