Honeywell 201052A, 201052B Installation Instructions

201052A,B

Auxiliary Switch

INSTALLATION INSTRUCTIONS

APPLICA TION

The 201052A or B Auxiliary Switch is used in conjunction with the ML6161/ML7161 Direct Coupled Actuator. It allows for control of equipment external to the actuator (for example, electric reheat coils and fan) at an adjustable point in the actuator stroke (from 0° to 90°).

Models:

201052A: Contains one auxiliary switch. 201052B: Contains two auxiliary switches.

Electrical Ratings:

50 VA, pilot duty at 24 Vac, selective not simultaneous.

Switching:

Single-pole, double-throw (spdt) micro switches.

Switch Differential:

Three angular degrees maximum.

Approvals:

Underwriters Laboratories Inc. Recognized: File No. E4436, Guide No. XAPX.

Dimensions:

See Fig. 1.

2-1/4 (57)

INST ALLATION

When Installing this Product...

1. Read instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check ratings and descriptions given in specifications to make sure product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After installation is complete, check out product operation as provided in these instructions.

CAUTION

Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry.

Disconnect power supply before installation. Actuators with auxiliary switches can have more than one disconnect.

CAUTION

Actuator Damage Hazard. Turning motor output hub by hand or wrench can damage internal gears.

Ensure declutch button is depressed while manually turning hub.

1. Determine desired switching action (if switch is to energize during clockwise or counterclockwise

rotation). With switch cam as shown in Fig. 2, the normally closed contact opens during counterclockwise rotation and the normally open switch closes.

xxxxxxx

1-2/3 (42)

5/8 (15)

M2159B

Fig. 1. Dimension drawing in in. (mm).

3-3/8 (86)

X-XX UL

63-2218-1

201052A,B AUXILIARY SWITCH

COM

NO NC

CCW

M2160

Fig. 2. Switching configuration for counterclockwise

Conversely, with the switch cam as shown in Fig. 3, the normally closed contact opens during clockwise rotation and the normally open switch closes.

Fig. 3. Switching configuration for clockwise

2. Align the switch hub with the set screws on the

actuator. See Fig. 4. Mount the switch on the actuator and tighten the three captive screws.

3. Engage the declutch and rotate the hub to the desired position for switch operation.

NOTE: When installed, the angular position indicator on

the switch face moves from 90° to 0° during counterclockwise motion and from 0° to 90° during clockwise motion.

4. Disengage declutch.

5. With a screwdriver, move cam inside switch

assembly to the appropriate position. Remember, the direction of travel of the cam for switching purposes (see Fig. 2 and 3). Monitor the switch closure with an ohmmeter for a continuity check. See Table 1.

rotation (top view).

COM

NO NC

M2161

rotation (top view).

IMPORTANT

Make certain that the switch activates at the desired degree of stroke.

NOTES:

— For two switch models, cams align with their

respective switches and are each individually set using the same procedure described in the Installation section.

— Switches may also be preset prior to

installation on the actuator if the angular switch position is known.

RANGE STOP PIN POINTED TOWARD SHAFT

Fig. 4. ML6161 DCA with 201052A Auxiliary Switch.

Table 1. Proper continuity measurements.

Normally Open Contacts Normally Closed Contacts

Switch Activated Zero ohms Infinite ohms

Switch Not Activated Infinite ohms Zero ohms

201052 AUXILIARY SWITCH

CW COM

CCW

N C

COM

M10250

N O

Home and Building Control

Honeywell Inc.

Home and Building Control

Honeywell Limited-Honeywell Limitée

M2H 3N7

XX-XXXX—X

63-2218—1 B.B. Rev. 10-97 Printed in Mexico

Helping You Control Your World

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