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R7195A,B MOTOR POSITIONER

3

63-2582

Fig. 1. R7195A,B Motor Positioner approximate dimensions in in. (mm).

INSTALLATION

When Installing this Product…

1.

Read these instructions carefully. Failure to follow them 

could damage the product or cause a hazardous 

condition.

2.

Check the ratings given in the instructions and on the 

product to make sure the product is suitable for your 

application.

3.

The installer must be a trained, experienced technician.

4.

After installation is complete, check out product 

operation as provided in these instructions.

WARNING

Electrical Shock Hazard.

Can cause serious injury or death.

Disconnect power supply before beginning installation. 

More than one disconnect may be needed.

Equipment Required

To install the R7195A,B Motor Positioner, you will need:

1.

Electric drill.

2.

Drill bits (No. 23, No. 37).

3.

Four No. 6 machine screws or four No. 6 self-tapping 

screws.

4.

Standard screwdriver.

5.

Small adjustable wrench.

6.

Center punch and hammer.

Procedure

Refer to Fig. 1 and layout of the centers of the mounting hole 

locations on the mounting surface.

1.

Use a center punch and hammer to mark the locations 

for drilling.

2.

Depending on the characteristics of the mounting 

surface, drill clearance holes (No. 23 bit) for No. 6 

machine screws or starting holes (No. 37 bit) for No. 6 

self-tapping screws.

3.

Place the positioner on the surface so that the mounting 

holes are aligned with those drilled in the surface and 

secure with the machine screws and nuts or self-tapping 

screws, as applicable.

4.

Install separate conduit for controller leads and 

operating voltage leads.

WIRING

General

All wiring must comply with all applicable local electrical 

codes, regulations and ordinances. When wiring more than 

one motor positioner to a controller, make sure that the total 

impedance of positioners and wiring is less than the output 

impedance of the controller.For example, the R7355 

DialTrol™ Controller can be wired to a maximum of eight 

R7195A Motor Positioners. The R7355 Controller is capable 

of driving a load of up to 650 ohms. See Fig. 2.

3-3/4 (95)

6-9/16

(167)

3/4 (14) NPSM (2)

7-3/8
(187)

3-1/2 (89)

3/16 (5)

M20786

4-29/32 (124)

7-25/32

(198)

Summary of Contents for R7195A

Page 1: ...ctionator Heavy duty case Mounts directly on M940 Actuator Solid state design extends product life and reliability Zero span and deadband adjustments allow motor to be field adjusted to various input ranges i e split ranging Hard Manual feature allows operator to override the controller 4 20 mA or 135 ohm input action to open or close fully the final control element Reversing direction of motor ca...

Page 2: ...o 66 C Slidewire Resistance 135 ohms or 1000 ohms Input Range R7195A 4 20 mA Adjustments Zero 0 8 to 16 8 mA Span 2 0 to 20 0 mA Deadband 1 to 5 Factory Settings Zero 4 0 mA input 0 to 5 feedback potentiometer position Full Scale 20 mA 95 to 100 feedback potentiometer position Input Range R7195B 135 ohm retransmitting slidewire input Adjustments Zero 0 to 80 of slidewire input Span 12 5 to 125 of ...

Page 3: ...Refer to Fig 1 and layout of the centers of the mounting hole locations on the mounting surface 1 Use a center punch and hammer to mark the locations for drilling 2 Depending on the characteristics of the mounting surface drill clearance holes No 23 bit for No 6 machine screws or starting holes No 37 bit for No 6 self tapping screws 3 Place the positioner on the surface so that the mounting holes ...

Page 4: ...tentiometer Fig 3 Multiple R7195B Motor Positioners connected to one 135 ohm input potentiometer Wiring Motor Positioner to Motor Terminals 1 Refer to wiring diagrams and documentation supplied with the motor to connect the motor positioner for specific applications 2 To avoid inductive interference to the internal circuitry separate the leads carrying line voltage from all other leads 3 Provide c...

Page 5: ... G L2 L1 2 3 1 B W R G 3 2 1 6 5 4 GROUND NEUTRAL HOT R7195 SUPPLY M940A MOTOR TERMINALS TO 4 20 mA INPUT B W R CW 135 OHM POTENTIOMETER INPUT M20790 R7195A B MOTOR POSITIONER 5 4 6 G L2 L1 2 3 1 B W R 1 L1 L2 2 3 R Y T G GROUND NEUTRAL NEUTRAL HOT HOT R7195 SUPPLY M944 G S LINE VOLTAGE MOTOR TERMINALS TO 4 20 mA INPUT B W R CW 135 OHM POTENTIOMETER INPUT M20791 ...

Page 6: ...the error signal voltage The balancing bridge circuit will amplify the error signal causing a Triac switch to fire This will energize a motor winding and will re position the feedback potentiometer until the error signal is reduced to zero Fig 8 Block diagram R7195A B MOTOR POSITIONER 5 4 6 G L2 L1 2 3 1 B W R 1 2 3 L1 L2 24 VAC 120 VAC Y T G GROUND NEUTRAL HOT R7195 SUPPLY M944B E MODUTROL MOTORS...

Page 7: ...tween the input signal and the slidewire signal is zero SERVICE AND TROUBLESHOOTING Calibration Procedure NOTE The R7195 Motor Positioner is calibrated at the factory for a 4 20 mA input signal for the R7195A and a 135 ohm potentiometer input for the R7195B Therefore do not calibrate the motor positioner unless the input signal desired is something other than 4 20 mA R7195A or 135 ohms R7195B To c...

Page 8: ...omponent failures are listed below a Shorted triac switches Q3 and Q4 b Q3 and Q4 break over at less than rated voltage c Q3 and Q4 do not fire d MOV CR12 shorts 5 If the logic diagram does not identify your system related problem the failure is not in the output circuit and the controller should be replaced or you may use the schematic to troubleshoot the board NOTE If your motor motor controller...

Page 9: ...O 1 REPLACE Q4 REPLACE Q4 DID MOTOR DRIVE AT NORMAL SPEED YES NO IS VOLTAGE LESS THAN 10V YES NO REPLACE Q3 A4 R28 R29 YES YES NO NO YES DID MOTOR DRIVE OPEN REPLACE Q4 REPLACE Q4 A5 R31 R32 REPLACE CR12 REPLACE Q3 M20795 NO YES SHORT TERMINALS B TO W CONNECT OPERATING VOLTAGE OPEN INPUT FROM CONTROLLER MEASURE AC VOLTAGE AT TERMINALS 1 AND L2 IS VOLTAGE LESS THAN 10V REPLACE Q3 YES NO YES NO YES ...

Page 10: ...AGE AT TERMINALS L2 TO 1 REPLACE Q4 REPLACE Q4 DID MOTOR DRIVE AT NORMAL SPEED YES NO IS VOLTAGE LESS THAN 10V YES NO REPLACE Q3 A4 R28 R29 YES YES NO NO YES DID MOTOR DRIVE OPEN REPLACE Q4 REPLACE Q4 A5 R31 R32 REPLACE CR12 REPLACE Q3 M20796 NO YES OPEN INPUT W CONNECT OPERATING VOLTAGE SHORT R W MEASURE AC VOLTAGE AT TERMINALS 1 AND L2 IS VOLTAGE LESS THAN 10V REPLACE Q3 YES NO YES NO YES DID MO...

Page 11: ...11 63 2582 ...

Page 12: ...ario M1V 4Z9 R7195A B MOTOR POSITIONER By using this Honeywell literature you agree that Honeywell will have no liability for any damages arising out of your use or modification to the literature You will defend and indemnify Honeywell its affiliates and subsidiaries from and against any liability cost or damages including attorneys fees arising out of or resulting from any modification to the lit...

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