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  • PRODUCT DATA

    63-2582 ® U.S. Registered Trademark Copyright © 2002 Honeywell All Rights Reserved

    R7195A,B Motor Positioner

    APPLICATION The R7195A,B Motor Positioner is a single channel solid state proportioning amplifier that will accept an output signal from a controller to position a reversing control motor with a 135-ohm or 1000-ohm feedback slidewire. Motors with slidewires that have resistances other than 135 ohms or 1000 ohms will be shunted to one of these two values.

    The R7195A Motor Positioner is factory-adjusted to accept a 4 to 20 mA input. The R7195B Motor Positioner is factory-adjusted to accept input from a 135-ohm retransmitting slidewire.

    FEATURES Accepts 4-20 mA or 135-ohm signal to provide position

    proportional control of M944 Modutrol® Motor without balance relay and M940A,B Actionator.

    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 can be accomplished by simple wiring change of R7195.

    Output from one R7355 4-20 mA DialaTrol can operate up to eight R7195 Positioners and associated M944 or M940 Actuators.

    Output from one 135-ohm Series 90 Controller can operate up to five R7195B Motor Positioners.

    Span and zero adjustment do not interact with each other so each adjustment can be made independently without having to readjust the other parameter.

    Can operate with motor feedback slidewire between 100 and 1000 ohms.

    Contents Application ........................................................................ 1 Features ........................................................................... 1 Specifications ................................................................... 2 Installation ........................................................................ 3 Wiring ............................................................................... 3 Operation .......................................................................... 6 Service and Troubleshooting ............................................ 7

  • R7195A,B MOTOR POSITIONER

    63-2582 2

    ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

    If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

    1. Your local Home and Building Control Sales Office (check white pages of your phone directory). 2. Home and Building Control Customer Relations

    Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386

    In CanadaHoneywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

    SPECIFICATIONS Models: See Table 1.

    Table 1. R7195A,B Models.

    Operating Temperature Range: -30°F to +150°F (-35°C to +66°C).

    Slidewire Resistance: 135 ohms or 1000 ohms.

    Input RangeR7195A (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 RangeR7195B (135-ohm retransmitting slidewire input): Adjustments:

    Zero: 0% to 80% of slidewire input. Span: 12.5% to 125% of slidewire input. Deadband: 1% to 5% of slidewire input.

    Factory Settings: Zero: 0% to 2% input potentiometer = 0% to 10% feedback

    potentiometer position. Full Scale: 98% input potentiometer = 90% to 100%

    feedback potentiometer position.

    Repositions: 1% Deadband Setting = 100 repositions. 5% Deadband Setting = 20 repositions.

    Input Impedance: R7195A: 75 ohms. R7195B: 1 Megohm.

    Dimensions: See Fig. 1.

    Weight: R7195A: 2.7 lbs (1.2 kg). R7195B: 3 lbs (1.4 kg).

    Approvals: Underwriters Laboratories, Inc. Listed: Type 4 Enclosure, File

    Number 84572. CSA Certified: Enclosure 4, File Number LR47125.

    Model Number Operating Voltage Controller Input R7195A1031 120 Vac, 60 Hz 4-20 mA R7195A1056 120 Vac, 60 Hz 4-20 mA (equipped for

    1000-ohm feedback slidewire)

    R7195A1064 220 Vac, 60 Hz 4-20 mA R7195B1021 120 Vac, 60 Hz 135-ohm input

  • 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)

  • R7195A,B MOTOR POSITIONER

    63-2582 4

    Fig. 2. Multiple R7195A Motor Positioners connected to one 4-20 mA input.

    Split Range Capability See Fig. 2 and 3. Two R7195A Motor positioners can be wired to operate in series or can be used to split the range. One R7195A Motor Positioner can be calibrated from 4 mA to 12 mA and the second positioner can be calibrated from 12 mA to 20 mA. Both positioners can also operate in series with an operating range of 4-20 mA.

    More than one R7195B Motor Positioner can be connected to a single 135-ohm input potentiometer as shown in Fig. 3. All W and R motor positioner terminals are connected in parallel to the potentiometer. Only one motor positioner terminal B is connected to the input potentiometer. The R7195B Motor Positioners may be calibrated to operate as split ranges or all may be set to the same range. Up to five R7195B Positioners may be connected to the one potentiometer.

    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 conduit protection for controller leads and provide separate conduit for motor positioner leads from terminals 4, 5 and 6.

    4. Refer to Fig. 4, 5, 6 and 7 for examples of typical wiring configurations.

    Fig. 4. Connections to M940 Motor using separate supply voltage.

    4 TO 20 mA CONTROLLER

    R7195

    R7195

    4-20 mA OUTPUT

    +

    -

    W

    R

    W

    R

    M20787A

    R7195 MOTOR

    POSITIONER

    B R W B R W B R W

    RE-TRANSMITTING POTENTIOMETER (OR OTHER POTENTIOMETER) USED FOR INPUT. M20787

    1

    1

    R7195 MOTOR

    POSITIONER

    R7195 MOTOR

    POSITIONER

    5 4 6

    G L2 L1 2 3 1 B W R

    G 3 2 1

    6 5 4

    GROUND

    GROUND

    NEUTRAL

    HOT

    HOT

    NEUTRAL MOTOR SUPPLY

    R7195 SUPPLY

    M940A MOTOR

    TERMINALS TO 4-20 mA INPUT

    B W R

    CW

    135-OHM POTENTIOMETER INPUT

    M20789A

    + -