Settings and Adjustments, Setting Stroke

SERIES 90 MODUTROL IV™ MOTORS

SETTINGS AND ADJUSTMENTS

Before Setting Stroke

1.Remove the top cover from the motor.

2.Disconnect the controller from the motor.

3.Connect a potentiometer to the motor as shown in Fig. 7.

IMPORTANT

Detach linkage from motor before adjusting stroke.

Setting Stroke

On adjustable stroke motors, stroke is field-adjustable between 90° and 160°:

•The mechanical adjustment (cams) establishes the fully open (clockwise, as viewed from the power end) and fully closed positions of the motor shaft.

•The electrical adjustment (trim pot) matches the feedback resistance change to the motor stroke.

•TRADELINE motors are shipped with stroke set at 160°.

CAUTION

Careless Installation Hazard.

Use of excessive force while adjusting cams damages the motor.

To avoid damaging motor end switches, set cams by moving only the top of the screwdriver.

CAUTION

Careless Installation Hazard.

Forcibly turning the motor shaft damages the gear train and stroke limit contacts.

Never turn motor shaft manually (by hand or with a wrench).

CAUTION

Equipment Damage Hazard.

Can damage the motor beyond repair.

Set cams by moving the top of the screwdriver only. Pressing screwdriver against cam slot sides or use of excessive force can damage motor end switches.

1.Adjust the trim pot:

a.For 160° stroke, turn trim pot fully clockwise.

b.For 90° stroke, turn trim pot fully counterclockwise.

2.Drive the motor to mid-position by jumpering R-W-B.

3.Adjust the cams:

a.For 160° stroke:

(1)Insert 1/8 in. screwdriver blade into an inner cam slot and move screwdriver top as far as possible counterclockwise (viewed from power end).

See Fig. 9. Repeat in successive cam slots until inner cam is against the counterclockwise stop.

(2)For low torque motors (75 lb-in. or less), skip to step 4.

(3)Insert 1/8 in. screwdriver blade into an outer cam slot and move screwdriver top as far as possible clockwise (viewed from power end). See Fig. 9. Repeat in successive cam slots until outer cam is against the clockwise stop.

b.For 90° stroke:

(1)Insert 1/8 in. screwdriver blade into an outer cam slot and move screwdriver top as far as possible counterclockwise (viewed from power end).

See Fig. 9. Repeat in successive cam slots until outer cam is against the counterclockwise stop.

(2)For low torque motors (75 lb-in. or less), skip to step 4.

(3)Insert 1/8 in. screwdriver blade into an inner cam slot and move screwdriver top as far as possible clockwise (viewed from power end). See Fig. 9. Repeat in successive cam slots until inner cam is against the clockwise stop.

4.Check the motor stroke before connecting the linkage:

a.Remove R-W-B jumper.

b.Short R-W. The motor should drive fully clockwise (viewed from power end).

c.Remove R-W jumper and short R-B. The motor should drive fully counterclockwise (viewed from power end).

5.Reconnect the controller, replace the motor top cover, and attach the linkage to the motor.

	STROKE
	ADJUSTMENT
	CAMS	1
W	INNER AUXILIARY
	SWITCH
	INNER AUXILIARY
B	SWITCH CAM (BLUE)
	POWER
	END
R
	OUTER AUXILIARY
T2	SWITCH CAM (RED)
T1	OUTER AUXILIARY
	OUTER AUXILIARY
	SWITCH
	ADJUSTABLE STROKE POTENTIOMETER

1HIGH TORQUE (150 lb.-in., 300 lb.-in.) MODELS HAVE TWO YELLOW ADJUSTMENT CAMS. LOW TORQUE MODELS HAVE ONLY ONE BROWN INTERNAL STROKE ADJUSTMENT CAM.

NOTE: NOT ALL FEATURES AVAILABLE ON ALL MODELS. M17625A

Fig. 5. Terminals and adjustments.

63-2190—3

Series 90 specifications

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