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PRODUCT DATA

63-2631

Series 90

Modutrol IV™ Motors

APPLICATION

The Series 90 Modutrol IV™ Motors are spring return and 

non-spring return modulating proportional control motors. Use 

these motors with controllers that provide a Series 90 output 

to operate dampers or valves.

FEATURES

• Replaces M934A,D, M941, M944A,C,D, M945A,D,F, 

M954, M965, and M975 motors.

• Integral junction box provides NEMA 3 weather 

protection.

• Integral spring return returns motor to normal position 

when power is interrupted.

• Motor and circuitry operate from 24 Vac. Models 

available with factory installed transformer, or a field 

added internal transformer.

• Quick-connect terminals are standard—screw terminal 

adapter is available.

• Adapter bracket for matching shaft height of older 

motors is available.

• Motors have field adjustable stroke (90° to 160°).
• Die-cast aluminum housing.
• Integral auxiliary switches are available factory 

mounted, or can be field added.

• Nominal timing standard of 30 seconds (90° stroke), 

and 60 seconds (160° stroke). Other timings available.

• Spring return motors can operate valve linkages form 

power end or auxiliary end shafts for normally closed 

or normally open valve applications.

• All models have dual shafts (slotted and tapped on 

both ends).

• All models have auxiliary switch cams.
• Fixed torque throughout the entire voltage range.
• Motors are designed for either normally open or 

normally closed valves and dampers.

• Field addable interface modules can be mounted in the 

junction box to upgrade the motor to Series 70 

(electronic) control.

Contents

Application ........................................................................

1

Features ...........................................................................

1

Specifications ...................................................................

2

Ordering Information  ........................................................

2

Installation ........................................................................

5

Settings and Adjustments .................................................

7

Operation .......................................................................... 10

Checkout .......................................................................... 12

Replacement .................................................................... 12

Содержание Modutrol IV M945F

Страница 1: ...t of older motors is available Motors have field adjustable stroke 90 to 160 Die cast aluminum housing Integral auxiliary switches are available factory mounted or can be field added Nominal timing standard of 30 seconds 90 stroke and 60 seconds 160 stroke Other timings available Spring return motors can operate valve linkages form power end or auxiliary end shafts for normally closed or normally ...

Страница 2: ...ble 1 Modutrol IV Series 2 Version Order Number Guide NOTE Torque designation corresponds to torque rating at standard timing nominally 60 sec for 160 and 30 sec for 90 except for 300 lb in motors which have timings of 2 or 4 min Dimensions See Fig 1 Electrical Ratings See Table 2 Control Inputs Proportional Series 90 NOTE Motor Series 90 control can be either Electronic or Mechanical 135 ohm Auxi...

Страница 3: ... JUNCTION BOX MOTOR AUXILARY END POWER END ADAPTER BRACKET 2 9 16 66 5 3 8 137 6 7 16 164 9 16 15 3 4 19 TOP VIEW OF BRACKET TOP VIEW 4 5 8 116 4 1 4 107 2 5 16 58 11 16 17 4 7 8 124 5 9 16 141 1 4 7 5 13 16 148 1 POWER END 2 3 1 1 2 37 3 4 19 SPRING RETURN MODEL SHOWN FOR HIGH TORQUE 60 LB IN SPRING RETURN MODELS 8 3 4 222 FOR NON SPRING RETUIRN MODELS 7 5 16 185 FOR HIGH TORQUE 60 LB IN SPRING R...

Страница 4: ...c 50 60 Hz primary 24 Vac secondary quick connect terminals 50017460 003 Internal Transformer 120 Vac 50 60 Hz primary 24 Vac secondary quick connect terminals 7617ADW Crank Arm approximately 0 75 inch shorter than 7616BR Crank Arm Can rotate through downward position and clear base of motor without requiring use of adapter bracket Q100 Linkage connects Modutrol Motor to V51 Butterfly Valve Requir...

Страница 5: ...tall motors with the crankshaft horizontal Improper motor mounting can result in inadequate motor gear train lubrication Use the following guidelines for proper motor mounting Always install motors with the crankshaft horizontal Mounting flanges extending from motor housing base are drilled for 1 4 inch 6 4 mm machine screws or bolts Non Spring Return Motors are shipped from the factory in the clo...

Страница 6: ...l valve applications Applications with the Q5001 Valve Linkage do not require the 220738A Adapter Bracket see Fig 4 Junction Box When used with liquid tight conduit connectors the junction box provides NEMA 3 weather protection for the motor The junction box standard with replacement motors encloses the terminals and provides knockouts for wiring conduits Housing an internal transformer or interna...

Страница 7: ...he motor 3 Connect a potentiometer to the motor as shown in Fig 6 IMPORTANT Detach linkage from motor before adjusting stroke Adjustable Stroke The stroke adjustment is made by means of two potentiometers the stroke and sensitivity potentiometers When viewing from the power end of the motor the stroke potentiometer is to the far left and sensitivity potentiometer is to the far right see Fig 8 To s...

Страница 8: ...arization Potentiometer Adjustable timing for M9181D1024 The timing potentiometer the second from the right see Fig 8 sets the timing to 1minute if turned fully CCW 2 minutes if turned to its middle point and 4 minutes if turned fully CW M13706 POWER END OF MOTOR AUXILIARY SWITCH CAMS STROKE POTENTIOMETER LINEARIZATION POTENTIOMETER SENSITIVITY POTENTIOMETER TIMING POTENTIOMETER M9181D1024 ONLY In...

Страница 9: ... Remove the top cover from the motor to gain access to the motor terminals and auxiliary cams 2 Disconnect the controller from the motor 3 Connect a potentiometer to the motor as shown in Fig 6 4 Using the potentiometer drive the motor to the position where the auxiliary equipment is to be switched 5 For a 1 switch differential check continuity of the auxiliary switch contacts R B and rotate the c...

Страница 10: ...ion necessary to correct the controlled medium change 4 As the motor shaft rotates it turns the feedback potentiometer rebalancing the bridge circuit stopping the motor Table 7 Modutrol IV Motor Operation Fig 10 Attaching a shunt resistor to TRADELINE motors Table 8 Cam Arrangements Motor Type Signal Resulting Action Non Spring Return or Spring Return Open W and short R to B drives open Open B and...

Страница 11: ...F MOTOR OPEN MOTOR CLOSE POWER END OUTER AUXILIARY CAM BLUE LEFT OUTER AUXILIARY SWITCH FAST RISEPORTION APPROX 1 DIFF 1 8 INCH STRAIGHT BLADE SCREWDRIVER RIGHT INNER AUXILIARY SWITCH SLOW RISE PORTION APPROX 10 DIFF INNER AUXILIARY CAM RED FAST RISE PORTION APPROX 1 DIFF FAST RISE PORTION APPROX 1 DIFF SLOW RISE PORTION APPROX 10 DIFF MOTOR OPEN MOTOR CLOSE POWER END OUTER AUXILIARY CAM RED LEFT ...

Страница 12: ...n power interruption 6 Return the controller to the desired setting before leaving the job REPLACEMENT Damper Application 1 Turn off power and remove wiring from the old motor 2 Remove the crank arm from shaft of old motor and remove the old motor 3 Determine necessity of the mounting bracket If the linkage can reach the new motor shaft position and the crank arm has clearance for the necessary ro...

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