Boston Gear RB Series

Transcription

1 Boston Gear RB Series DC Motor Speed Control Installation and Operation Doc. No. 90 RB, B, S, R RB, B, S, R RB, B, R An Altra Industrial Motion Company

2 TABLE OF CONTENTS GENERAL INFORMATION PAGE Description Enclosure Ratings Operating Conditions Performance Characteristics Installation and Wiring Startup and Operation Maintenance MODIFICATIONS Full Wave Field Half Voltage Output Increased Acceleration Time Limit Switch Reversing Torque Control Tachometer Feedback 0 Line Starting TROUBLESHOOTING PARTS LIST TABLE Ratiotrol Beta Model Matrix Operator Controls Ratings Speed Regulation Characteristics Dynamic Braking Characteristics Calibration Wires 9 Full Wave Field Capacitor Values/Acceleration 9 Contactor Selection 0 Troubleshooting Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

3 TABLE OF CONTENTS FIGURE Typical Beta Enclosed Controller Series Beta Mounting Configurations Main Board Connections 9 Internal View Beta Controller 0 AC Power and Motor Connections Connections Models RB! and RB Connections Models RB and RBB Full Wave Field 9 Increased Acceleration Time 0 Limit Switch Reversing Limit Switch Reversing Using RCS Remote Control Station Torque Control with Torque Pot Only 9 Torque Control with Torque Pot and Run Speed Pot 9 Tachometer Feedback for VDC/000 RPM Generator 0 Tachometer Feedback for -0 VDC/000 RPM Generator 0 Moving Capacitor C for Line Start Operation Recommended Customer Connection Diagram for Line Start Operation RB, RB, RB Mounting Dimensions 9 RB, RB, RB (Types B, S, R) Mounting Dimensions SCHEMATICS Run-Stop Switch Reverse Magnetic Reverse Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

4 GENERAL INFORMATION Description Ratiotrol Beta controllers statically convert single-phase AC line power to regulated DC for adjustable-speed armature control of shunt-wound and permanent-magnet motors. The controllers are Underwriters Laboratories Listed. (File No. E00) Enclosure Totally enclosed, non-ventilated, constructed of rugged die-cast aluminum alloy. Gasketed, screw fixed cover excludes contaminants. Provision for conduit entry is included top and bottom by two () /- NPT tapped holes. Standard unit is easily and inexpensively convertible to NEMA Type, or. Model Types Table. Ratiotrol Beta Model Matrix Function Configuration Operator Controls Model Unidirectional Run-Stop Armature Switch Reversing Armature Contactor Reversing and D.B. Open Chassis Enclosed Local (Integral) Remote (*) Power Source And Horsepower Range VAC 0/0 Hz 0VAC 0/0 Hz RB X X X RBB X X X / - HP N/A RBS X X X RBR X X X RB X X X RBB X X X RBS X X X Reconnectable Units VAC 0/0 Hz 0VAC 0/0 Hz RBR X X X RB X X X / - HP / - HP RBB X X X RBR X X X * Operator controls provided by user Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

5 OPERATOR CONTROLS Table. Operator Controls Controller Suffix B or no Suffix None Operator Controls S. Run/Stop Switch - maintained positions. Motor Speed Pot - K ohm, / watt RATINGS. Run/Stop Switch - maintained positions R. Fwd/Rev Switch - maintained positions with center detent (RB, ) position for antiplug protection. Motor Speed Pot - K ohm, / watt. Run/Stop Switch - maintained positions R. Rwd/Rev Switch - momentary positions with return (RB only) to center. Motor Speed Pot - K ohm, / watt. Service Factor Duty Continuous. Overload Capacity % for minute. AC Line Fuse Interrupting Capacity amperes Table. Ratings Component -Phase VAC 0 or 0 Hz Line Unit AC Input Amps 0VAC (Full Load) Rated Horsepower / / / / / / / Unit KVA Motor 90V Armature 0V DC Output Amps (Full Load) Motor 0V Field 00V Amps Full Load Torque (LB. FT.) With 0 RPM Base Speed Motors RB, RB RB. (. kg). (. kg) Weight RBB, RBS LBS. (kg) RBB, RBS. (. kg) RBR, RBR RBB, RBR.0 (. kg) Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

6 OPERATING CONDITIONS. Line Voltage Variation ± 0% of rated. Line Frequency Variation ± Hz. Ambient Temperature (*) ºC to 0ºC (ºF to 0ºF). Altitude (standard) feet (000 meters) maximum * ºC (ºF) maximum in enclosed areas where RB, RB or RB open chassis units are mounted. PERFORMANCE CHARACTERISTICS. Controlled Speed Range to motor base speed. Speed Regulation (See Table ) - Regulation percentages are of motor base speed under steady-state conditions. Efficiency (at maximum speed) a. Controller % b. Controller with motor %. Displacement Power Factor (Rated Speed/Rated Load) %. Acceleration (non-adjustable) by fixed ramp with current limit override. Current Limit (non-adjustable) % full-load torque (typical) Table. Speed Regulation Characteristics Variable Load Line Field Temperature Speed Regulation Method Change Voltage Heating () ± 0ºC Range 9% ± 0% Cold/Normal Standard Voltage Feedback with IR % ± % -% ± % 0: Compensation Optional Speed (Tach) 0.% ± % 0.% ± % 00: Feedback () () Does not apply to Permanent-Magnet Motors () Unidirectional Models Only Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

7 PERFORMANCE CHARACTERISTICS (Con t) Figure. Typical Beta Enclosed Controller. Dynamic Braking - Supplied in Models RB, RBB and RBR. Provides initial braking torque and stops per minute as shown in Table. The dynamic braking resistor is rated for stopping a typical load when the motor load inertia does not exceed the motor armature inertia. HIGHER INERTIA LOADS AND/OR ARMATURE VOLTAGE HIGHER THAN RATED MAY EXTEND BRAKING TE BEYOND THE WATTAGE RATING OF THE DYNAMIC BRAKING RESISTOR. Table. Dynamic Braking Characteristics Component Braking Torque % Stops Per Minute Unit Rated Horsepower / / / / / / -/ V V V V Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

8 INSTALLATION AND WIRING BE SURE TO READ ALL THE FOLLOWING INSTALLATION AND WIRING INSTRUCTIONS BEFORE INSTALLING THE CONTROLLER.. Unpack the controller.. Remove the controller front cover (if applicable) and check components in the controller. Report shipping damage to the carrier. Figure. Series Beta Mounting Configurations. The controller can be mounted in any of four configurations, as shown in Figure.. Conduit entry is made by driving a / diameter pipe nipple, socket or similar rigid object through the conduit opening. On all models install a / x conduit fitting or pipe. NOTE: DO NOT USE A PUNCH SINCE THIS WILL LEAVE SHARP PROTRUSIONS AROUND THE OPENING. To prevent component damage from knockout fragments, apply masking tape to the inside of the knockout before removing it.. Remove the proper calibration wire(s) from the controller main board with a wire cutter, as shown in Table and Figure.. Be sure the main board is connected for the correct voltage. Figure shows the main board connected for 0 volt operation. For volt operation, the yellow and white leads on Transformer T connect to the V tabs, and the feedback jumper connects to the 90V ARM tab. NOTE: Model RB Controllers are designed for volt operation only.. Replace the front cover (if applicable) on the chassis.. Mount the controller. If the controller is subjected to vibrations, it must be shock mounted. NOTE: Never mount the controller immediately beside or above the heat-generating equipment, or directly below water or steam pipes. If the controller is mounted in an enclosure, be sure the temperature in the enclosure does not exceed Prepare for wiring by removing the front cover (if applicable) and attaching it to the chassis as shown in Figure. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

9 INSTALLATION AND WIRING (Con t) Motor Horsepower 90 VDC 0 VDC Remove Wires / / R9 Thru R / / R9 Thru R / / R9 Thru R / / R0 Thru R / / R0 Thru R / R Thru R / / R Thru R None Table. Series Calibration Wires Calibration Wires T Yellow R R9 R0 R R R R Figure. Main Board Connections Yellow V Tabs TB A A- F- F L L Fdbk Jumper On 0V Arm Fdbk Tab White Yellow 0V 0V 90V White T Leads On 0 V Tabs 90V Arm Fdbk Tab Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control 9

10 INSTALLATION AND WIRING (Con t) Figure. Internal View Beta Controller CAUTION a. SEPARATE OVERCURRENT PROTECTION IS REQUIRED BY THE NATIONAL ELECTRICAL CODE. THE USER IS RESPONSIBLE FOR CONFORMING WITH THE NATIONAL ELECTRI- CAL CODE AND ALL APPLICABLE LOCAL CODES WHICH GOVERN SUCH PRACTICES AS WIRING PROTECTION, GROUNDING DISCONNECTS AND OTHER PROTECTION. b. THE AVAILABLE SHORT-CIRCUIT CURRENT OF THE INPUT SUPPLY MUST BE LESS THAN,000 AMPERES SYMMETRICAL OR CONTROLLER DAMAGE MAY RESULT. Short circuit current can be limited by sizing the input supply transformer at 0KVA or less, or by using correctly sized current limiting fuses in the input supply to the controller. c. NEVER USE POWER FACTOR CORRECTION CAPACITORS ON THE INPUT LINE TO THE CONTROLLER. These capacitors can damage the solid-state components. 0 Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

11 INSTALLATION AND WIRING (Con t) 0. Use #AWG stranded wire and connect the line and motor wiring to Terminal Strip TB as shown in Figure. Route the wiring as shown in Figure. TB AC Power Motor Shunt Field { * L L F F- A- A Motor Arm Figure. AC Power And Motor Connections NOTE: Connections shown in Figure do not provide positive disconnect of power from the motor on Models RB and RB. Model RB should only be connected to VAC power. Models RB and RB are shipped for connection to 0VAC power, but they are reconnectable for VAC power per Figure.. Connect ground to a controller mounting screw. Be sure to remove the paint where the ground screw contacts the controller.. Do not close the controller until startup is complete. Models RB, RBB, RB, RBR, RB And RBB. Use Alpha No. 9 or equal twisted cable and connect the operator controls to the controller as shown in Figure or. Maintain separation between the power wiring (Figure ) and the operator control wiring by minimum. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

12 MODELS RB, RBB, RB, RBR, RB AND RBB (Con t) Motor Speed Pot 00 0 K /W Run Contact TB NOTES:. Contacts and motor speed pot are user supplied.. Contacts must be rated at ma DC minimum. Symbol means twisted wire. Figure. Connections Models RB & RB Gnd Motor Speed K, /W 00 0 Run Fwd Run Rev Stop TB TB TB 9 0 Pushbutton Panet Remote Station Figure. Connections Models RB & RBB Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

13 MODELS RB, RBB, RB, RBR, RB AND RBB (Con t) Startup And Operation. Be sure all operator switches are in STOP or in neutral center position.. Turn the MOTOR SPEED control pot to zero on its dial.. Apply AC power to the controller. Models RB, RB, RBB And RBB. Close the run contact between Terminals and.. Turn the MOTOR SPEED control pot until the motor rotates. Models RB And RBB. Push the RUN FWD button.. Turn the MOTOR SPEED control pot until the motor rotates.. Reverse Operation - Push the STOP button and then push the RUN / REV button. The motor will dynamically brake to a stop and then accelerate in the opposite direction. Do not exceed the braking capabilities listed in Table, page. Models RBS And RBS. Place the RUN/STOP switch in RUN position.. Turn the MOTOR SPEED pot until the motor rotates. Models RBR And RBR. Place the RUN/STOP switch in RUN position.. Place the FWD/REV switch in FWD position.. Turn the MOTOR SPEED pot until the motor rotates.. Reverse Operation - Place the FWD/REV switch in REV position. If the motor load inertia exceeds the motor inertia, place the RUN/STOP switch in STOP position before changing the FWD/REV switch. Model RBR. Place the RUN/STOP switch in RUN position.. Push the FWD/REV switch into FWD position. This position is momentary. When the switch is released, it returns to the center position.. Turn the MOTOR SPEED pot until the motor rotates.. Reverse Operation - Place the RUN/STOP switch in STOP position and then return it to RUN position. Next, push the FWD/REV switch into REV position. This position is momentary. When the switch is released, it returns to the center position. The motor will dynamically brake to a stop and then accelerate in the opposite direction. Do not exceed the braking capabilities listed in Table. Notes:. If motor rotation is opposite to that desired, stop the motor, turn-off the AC supply, and interchange the motor armature leads.. Turn the MOTOR SPEED pot to zero on its dial and check minimum speed, which is normally set for zero. To readjust minimum speed, turn the MIN SPD pot on the main board. See Figure.. The MOTOR SPEED pot controls forward, reverse and jog speeds from minimum speed to maximum speed.. Whenever the AC input power is interrupted (turned-off), the controller must be reset after the AC power is restored by initiating a Stop function and then a Run function. This feature prevents accidental restarts. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

14 MAINTENANCE Maintenance consists of keeping the controller clean and dry. Refer to maintenance instructions supplied by the motor manufacturer. If the motor does rotate, check the fuse on top of the controller. The fuse type is shown on the controller data label. CAUTION SUBSTITUTE FUSES CAN CAUSE CONTROLLER DAMAGE. WARNING BE SURE THE AC INPUT POWER IS REMOVED BEFORE WORKING ON THE CONTROLLER. High voltage within the controller can cause electric shock resulting in personal injury or loss of life. Beta Modifications Full Wave Field Table. The standard half wave field supply may be converted to a full wave field supply. This modification doubles the field voltage that would otherwise be available. The table below shows the relationship. Standard Half Wave Full Wave Field Voltage AC Line Volts Field Voltage After Modification VAC 0 VDC 00 VDC 0 VAC 00 VDC 00 VDC In order to obtain the increased filed voltage, two diodes must be installed in the PC board. These diodes together with the two diodes in the power bridge form a full wave rectifier circuit. Figure shows the location of the diodes. Observe the orientation of the band marking on the devices when installing them. Use IN99 diodes or similar.a, 000V diodes. Remove the existing jumper as shown in Figure and install #0 insulated wire between the holes connected by the dotted line. Install Two Diodes (Note orientation of band on diode) Main Board R R9R0 D R R R High R Voltage Field Option E E E E D Blk Yel TB Install and solder wire between holes connected by dotted line. A A- F- F L Figure. Full Wave Field Unsolder wire from PC board. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

15 HALF VOLTAGE OUTPUT When the Beta controller is calibrated for 0 VAC, the armature voltage is adjustable from 0 to 0 VDC. It is possible to reduce this range to 0 to 90 VDC by moving the feedback jumper on the main board from its 0V position to the 90V position. This effectively doubles the armature feedback signal to the controller s error amplifier, thus reducing the armature voltage by half. Although the armature voltage is reduced, the field voltage remains at 00 VDC. Furthermore, the controller must now be calibrated for horsepower as if it were a VAC unit. Because the armature voltage is reduced by half, the gain of the system has doubled. This may cause instability at certain loads or speeds. Another consideration is the controller/motor form factor. The form factor is much higher when obtaining 90 VDC from a 0 VAC controller than it would be if the 90 VDC were obtained from VAC. This will increase motor heating to some extent and may cause commutation difficulties. Therefore, the suitability of this mode of operation should be confirmed by testing or consulting the motor manufacturer. INCREASED ACCELERATION TE The time it takes the Beta controller to bring the motor to full speed may be increased from the standard 0. second time to a maximum of. minutes. This is done by installing a V, axial lead electrolytic capacitor on the PC board. The value of the capacitor in microfarads determines the time the motor will take to reach full speed. The following table shows standard values of capacitors and the acceleration time obtained with each. The time listed is approximate due to the tolerance of the capacitor and is specified at the point the armature voltage reaches 9% of its final value. Although values larger than 000 MFD may be used, it is not recommended. Larger values may prohibit the controller from reaching full speed. Table. Capacitor Values/Acceleration Capacitance (MFD) Time (SEC.) * 0 000*. min. *These caps may not fit into the space provided on the PC board. In this case the caps leads may be insulated and bent so that they reach the holes provided. Capacitor values for other acceleration times may be obtained by using the following formula: (. x Time) - is approximate equal to capacitance in MFD Select a standard capacitor value which is close to the calculated result. Example: Compute the value of capacitance required for an acceleration time of two seconds: (. x ) - =. Microfarads Therefore, a 0 MFD capacitor would be installed on the Beta controller s main board. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

16 INCREASED ACCELERATION TE (Con t) Figure 9 shows the location of the acceleration capacitor. Observe the polarity when installing it. Main Board R C C C C9 Accel Cap Option R9 0V 90V Arm Tach Install Capacitor here (Note Positive Polarity) Figure 9. LIT SWITCH REVERSING Limit switch reversing controls the direction of motor rotation by the use of limit switches. The process starts by pressing a forward or reverse pushbutton. Typically the motor runs one direction performing a process until the machine encounters a limit switch. The switch then causes the motor to reverse direction. Finally, the limit switch at the beginning of the process is activated, reversing the motor direction again. This action continues until a stop button is pressed. The RB controller is the only model controller capable of performing this function. In fact, no additional electronics are required when using the RB controller. It can be mounted in an existing enclosure or a blank cover can be added, enclosing the controller for convenient mounting. The R cover cannot be used for this application. Either an RCS remote station (Figure ) or a custom station, with the controls shown in Figure, is required. A jumper wire (J) on the RB magnetic reversing board must be cut to break the on-board connection between TB terminals and in order to use limit switch reversing. This is shown in Figure 0. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

17 LIT SWITCH REVERSING (Con t) C C C R0 R R J C TB Magnetic Reversing Bd 0 09 Rev Cut Jumper Figure 0. Location of J Jumper Rev TB 9 H To Run Fwd Limit Fwd Switch () Stop Rev 9 0 Fwd Limit SW. () Limit SW. Rev Limit SW. V MR MF 0 MF Cut Jumper MR 09 Rev. D Magnetic Reversing Board Run Speed 00 0 /W K TB Main Board 09 Figure. Limit switch Reversing Using RCS Remote Control Station NOTES:. Wires connected to TB and TB must be twisted cable - such as Alpha 9/.. Symbol are terminals located on RCS remote control station. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

18 TORQUE CONTROL The standard mode of operation of the Beta controller is that of a speed controller with current limit. This means that the controller will regulate speed until the current reaches 00-0% of the motor s rated armature current. As the load increases beyond 0%, the controller s voltage will reduce until the motor has stopped rotating at % of rated current. Because the controller is regulating speed, the current or torque of the motor is allowed to vary up to 00% as required by the mechanical load. Some applications require the opposite mode of operation. The controller in this case controls the torque of the motor, allowing the speed to vary between zero RPM and base speed. Actually, the speed of the torque controlled motor is set by the speed of the material or system the torque controlled motor is pulling against. For Example: A torque controller is used to power a motor connected to a spool winding up scrap metal. The metal is being extruded from the process at a given rate. If a speed controller were used, the speed of the winder would have to match the speed of the material; otherwise, the material would go slack or become taut. It would be expensive and undesirably complicated to try to match the speed. However, with torque control, the process speed can vary and the controller will continue to regulate torque, disregarding any process speed changes. Because the material is always in tension, the speed of the torque motor will necessarily have to be proportional to the process speed. But, what happens when the material breaks: If the torque controlled motor doesn t have a process to exert its torque against, the motor will run at maximum speed. This should be taken into consideration when planning the installation. Make sure that the appropriate safety precautions are taken in the event of a material breakage, causing the winder to run at maximum speed. In order to use the torque control mode of operation either a K, /W pot is required or an S or R cover assembly. The speed pot in these cover assemblies can easily be converted to a torque pot by moving the wire on TB- to TB-, then cut the jumper as shown in Figure. A #0 AWL insulated jumper is also required between TB- and TB-. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

19 TORQUE CONTROL (Con t) Main Bd 09 D R R R R R D C R R9 R R R R9 Min Spd Comp Max Spd R W R R C0 TB K, /W Torque Pot Unsolder Jumper Figure. The modifications made in Figure allow the controller to run at maximum speed in the event of material breakage. If the torque controller, during its normal winding process, never reaches maximum speed, it may be desirable to limit the speed in the event of a material break. This is possible by adding the speed pot as shown in Figure. It should be noted that if the speed pot is set below the maximum process speed, that the torque controlled motor will be unable to keep up with the process, causing a sag in the material. Main Bd 09 D R R R R D C R R R R9 R R R9 Min Spd R Comp R Max Spd W R C0 TB 00K, /W Torque Pot Unsolder Jumper Figure. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control 9

20 TACHOMETER FEEDBACK The RB and RB unidirectional controllers have provisions for tachometer feedback built into their main PC board. Since the controller requires the proper polarity tach voltage, tach feedback cannot be used with Beta controllers which permit the motor rotation to be reversed. The electronics are designed so that a VDC/000 RPM to a 0 VDC/000 RPM tach can be used without circuit board modification. A VDC/000 RPM tach can be used by replacing R0 with a #0 AWG jumper wire. Refer to Figure for the location of the resistor. R R Accel Cap Option D R C0 R R Max Spd R0 R Tach Main Board Figure. Unsolder R0 and install a #0 AWG uninsulated jumper wire in its place. In order to use tachometer feedback connect the DC tachometer wires to the main boards TB- and TB- (observe polarity) and move the jumper from either the 90V or the 0V position to the tach position. See Figure. Moving the jumper breaks the armature feedback circuit and connects the tachometer signal through scaling resistors to the error amplifier s summing point.* A Main Board C9 R9 Accel Cap Option Main Board 90/0V A- 0V 90V Arm Connect lead to Terminal marked "Tach". Tach TB TB - DC Tach Figure. *Broken tach wires or tach coupling may cause the motor to run at a dangerously high speed. 0 Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

21 TACHOMETER FEEDBACK (Con t) In order to calibrate the maximum speed of the controller, follow this procedure:. Connect a DC voltmeter (adjusted to read 90 VDC or 0 VDC) to the A and A- terminals of the controller.. Turn the max. speed pot counterclockwise.. Turn the speed pot counterclockwise.. Turn the IR COMP pot fully counterclockwise. (IR COMP set clockwise may cause instability.). Apply power and initiate a run command.. Turn the speed pot clockwise slowly. If the Voltmeter reading reaches or exceeds rated armature voltage, with no adjustment from the motor speed pot, shut down the controller and switch the tachometer wires on TB- and TB-.. Adjust the speed pot fully clockwise.. Turn the max. speed pot clockwise until the voltmeter reads rated armature voltage (90 or 0V). The controller s maximum speed pot is now calibrated so that no further adjustment is necessary. LINE STARTING The standard Beta controller contains control logic which prevents the controller from restarting automatically if the AC line is interrupted and then reapplied. This is a safety feature which requires the controller be manually restarted after power loss. In some applications it may be desirable to start and stop the controller by applying or removing the AC power. This would typically be done with a contactor installed in the AC line. The logic which requires a manual restart after power loss may be defeated to accommodate a line starting application on the RB or RB chassis mount controllers. The RB is not a desirable controller to receive this modification due to its contactor reversing feature. Main Board C R R9 R D R0 R R R R C Q C9 D U C C C R0 R R R R R R C 9 Rev Cut Lead Install & Solder Cap Lead in Hole Figure. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

22 LINE STARTING (Con t) In order to allow the controller to run, place a jumper between TB- and TB- on the main board (refer to Figure ). At this time, the motor will run as soon as power is applied to the controller. Figure also shows how a contactor is used to start and stop the motor. The table on page shows the size of the contactor required for various horsepower controllers. V/ 0V M M L A Main Board L A- F- 90/0 0/00V Power Supply Customer Logic M Figure. Enable Jumper F TB TB RB Or RB Table 9. Contactor Selection Table Controller AC Contactor Size Horsepower VAC 0 VAC HP HP RB, RB Series Only RB Reverse PC Board () - Tapped Holes. RB, RB Series Only. Dia. Typical Slot Detail () #- Tapped Holes. Figure. RB, RB & RB Figure 9. RB, RB, RB (Types B, S, R) Mounting Dimensions Mounting Dimensions Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

23 Table 0. Troubleshooting Indication Possible Cause Corrective Action. Controller fuse F Wiring faulty, incorrect Check all external wiring terminating in blows when control- or grounded. the controller. ler is turned on. Motor shunt field shorted Repair or replace motor. or grounded. Controller shorted. Repair or replace controller.. Controller fuse F Motor armature shorted Repair or replace motor blows when motor or grounded starts to turn. Shorted SCR, SCR or SCR, or circuit board faulty. Replace circuit board or shorted SCR.. Controller Fuse F Loose or corroded con- Check all terminal connections and blows while motor nection, or wiring faulty, wiring between the line, controller, and is running. incorrect or grounded. motor. Overload. Circuit board faulty. Check motor armature current. If current exceeds controller rating, check for a mechanical overload or faulty motor. Also check shunt field current. Low shunt field current causes excessive armature current. Replace circuit board.. Motor does not Wiring faulty, incorrect Check all external wiring terminating in rotate. or grounded. the controller. Fuse F blown. Motor Speed pot faulty. Run/Stop or Forward/ Stop/Reverse switch faulty. Controller faulty. Replace F with exact replacement. Replace pot. Replace switch. Repair or replace controller.. Minimum speed High line voltage. Check for rated line voltage ±0%. excessive. Shorted SCR, SCR or Replace circuit board or shorted SCR. SCR, or circuit board faulty. Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

24 Table 0. Troubleshooting (Con t) Indication Possible Cause Corrective Action. Motor does not Low line voltage. Check for rated line voltage ±0%. reach top speed. Overload. See Indication. Circuit board faulty. Replace circuit board.. Unstable speed, in- Wrong calibration wire (s)see Table and Figure. adequate regulation, removed. or low torque. Motor faulty. Check motor commutator and brushes. Refer to motor manufacturer s instructions. Circuit Board Faulty. Replace circuit board. PARTS LIST. Power Device Kit (SCR s and power diodes) Main Board Reverse Board, RB only NEMA Kit (NEMA,,, Run-Stop Switch, RB and RB Run-Stop Switch, RB Reverse Switch, RB and RB Reverse Switch, RB Run Speed Potentiometer Fuse, ABC, RB Fuse, KTK0,, RB and RB Run Speed Knob SCR s (two per unit) Power Diodes (three per unit) Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

25 Run Stop To Reversing Bd (Optional) Cur Ref Enable R9 K /W V R 0K Optional Accel Cap 00, V C9 R 0K R UA R.K 0V Q Speed Pot K 00 0 R 0K Spd Ref R 00K 0 00 Min Spd K C,0V R 00K D V R 0K 9 0 R 00K C.0 C. D - UIC V D Error Signal - VAC Or 0VAC L E 0 Stop Run F E D D0L D9 C.0, 000V R 0 /W SCR A, 00V To R D R To R E E L RV D0 D0L D0L C.0, 000V 0 /W R SCR A, 00V To R D See Table E E R9 For High Voltage Field, Add Diodes & Move Jumper. 0V 0V V V Red T Yel Wht GRN ORN BRN IN9 D 00VCT D IN9 Volt Fdbk Tach C.0 R.M D IN9 V R.K, W V D, V INA C, 0V 0V Cur Fdbk Blk R0 0K C0. Max Spd 00K R K 0 00 R K Jumper For V/000 Tach R.M R 0K 00 UIB 0 R9 UIA IR Comp M C.0 C.00 V R0 K R 0K R 00K R 0K C.00 Q R 0K R K C. Q N0 R.K D R.K R D R V R.K R 00K C.0 C.0 To SCR To SCR A A- F- F 90/0V Armature 0/00V Shunt Field DC Tach 0V/000 RPM Or V/000 RPM (If Used) - C 0 C, 0V D, 0V IN0A V Sync Signal 0V R0 C9.00 R 00K R 00K R 0K 0 R0 00K Q 0V Q R9 K UB UID D V R 9 UC 9 V R V 0K 9 UD C, 0V Move For Line Starting - 90V 0V R 00 0V Cut For Torque Control Main Control Board Run/Stop Table HP Rating Res Wire V / / / / / / 0V / / / / / Remove R9 - R R9 - R R0 - R R0 - R R - R R, R None Unless Otherwise Specified All Resistor Values Are in Ohms. All Capacitor Values are In Microfarads All Resistors are /W, % All Capacitors are 00V, 0% All Diodes Are IN On Main Bd. All NPN Transistors are N0 Last Reference Designation Used R, C9, Q, U, SCR, RV, T TB TB TB All Diodes Are IN9 On Rev Bd. D C B A Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

26 Run Stop To Reversing Bd (Optional) Fwd Stop Rev E 9 Stop Fwd Rev 0 Fwd Stop 9 Rev Cur Ref Enable R9 K /W V R 0K Optional Accel Cap 00, V C9 R 0K R UA R.K 0V Q Front Panel Speed Pot K 00 0 R 0K Spd Ref R 00K 0 00 Min Spd K C,0V R 00K D V R 0K 9 0 R 00K C.0 C. D - UIC V D Error Signal - VAC Or 0VAC L E 0 Stop Run F E D D0L D9 C.0, 000V R 0 /W SCR A, 00V To R D R To R L RV D0 D0L D0L C.0, 000V R9 0 /W R SCR A, 00V To R D See Table E For High Voltage Field, Add Diodes & Move Jumper. 0V 0V V V Red T Yel Wht GRN ORN BRN IN9 D 00VCT D IN9 Volt Fdbk Tach C.0 R.M D IN9 V R.K, W V D, V INA C, 0V 0V Cur Fdbk Blk R0 0K C0. Max Spd 00K R K 00 0 R K Jumper For V/000 Tach R.M R 0K 00 UIB 0 R9 UIA IR Comp C.0 C.00 V R0 K R 0K R 00K R 0K C.00 Q R 0K R K C. Q N0 R.K D R.K R D R V R.K R 00K To SCR C.0 To SCR C.0 E E A A- F- F 90/0V Armature 0/00V Shunt Field - C 0 C, 0V D, 0V IN0A V Sync Signal 0V R0 C9.00 R 00K R 00K R 0K 0 R0 00K Q 0V Q R9 K UB UID D V R 9 UC 9 V R V 0K 9 UD C, 0V Move For Line Starting - 90V 0V R 00 0V Cut For Torque Control Main Control Board Switch Reverse D C B A Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

27 V R.K, /W C 0 V D V INA R C Front Panel Run Stop J C. Front Panel FWD REV MF MR R K R.K R K UA V 9 UIB 9 R.K V R K R.K 9 R9 K UIE 9 R0.V UIC 0 R.K /W R UIF K 9 R.K UD V 0 0 UA UB 0 UA V UB UB UID 9 UC 0 UD 0 V UC 0 UC 0 D D VAC OR 0 VAC D D D D C. MF D D D D0 C. D9 MR D 00 UA Speed Pot K R 0K Q MPSA0 R 0K Q MPSA0 V 0K, % R R D.K UD - 0 C - UB 0 R 0V 00K UA R0 R UC D R 0K, % R, M /W, % C 0V To A- To A R9, M /W, % R.K Switch Reverse L E 0 RV L RED 0V V YEL 0V V WHT R 00 0V Cut For Torque Control Cur Ref R Spd Ref 00K C, 0V V Enable R 0K R9 K /W F E D D0L D9 C.0, 000V D0L R 0 D0 /W D0L C.0, 000V SCR R A, 00V 0 To R /W To R SCR A, 00V D D R T0 R See Table E MF MR MR MF MR To R9 DB MF 90V R9 0V For High Voltage Field, Add Diodes And Move Jumper. Magnetic Reversing Bd To R T IN9 GRN D ORN 00 VCT BRN D IN9 Volt Fdbk Tach C.0M R. R 0K D IN9 C 0 V R.K W C,0V D, 0V IN0A V E 0V C,0V Cur Fdbk C0. R0 0K R 0K R.M R UIA R.M R9 C.0 V R0 K R 00K K R R 00K Q R9 K Q R K C. D R Optional Accel Cap 00, V C9 R 0K R 00K D K R K V 0 UIB C.00 V D R UA 0 UB 9 9 R 9 0V 0V Q R 00K C 0K. C.00 Error Signal Sync Signal R 0K 9 Q N0 V R.K R 0K D V 9 UD V R 00K R R R.K C.0 UIC D R 0K R0 C9 R 00K.00 UID D 0V Q C.0V Move For Line Starting MAIN CONTROL BOARD E A E A- F- F C.0 To SCR To SCR C.0 90/0V Armature 0/00V Shunt Field DC Tach 0V/000 RPM (If Used) Doc. No. 90 Boston Gear Ratiotrol DC Motor Speed Control

28 Warranty Boston Gear warrants that products manufactured or sold by it shall be free from defects in material and workmanship. Any products which shall within two () years of delivery, be proved to the Company s satisfaction to have been defective at the time of delivery in these respects will be replaced or repaired by the Company at its option. Freight is the responsibility of the customer. The Company s liability under this limited warranty is limited to such replacement or repair and it shall not be held liable in any form of action for direct or consequential damages to property or person. The foregoing limited warranty is expressly made in lieu of all other warranties whatsoever, express, implied and statutory and including without limitation the implied warranties of merchantability and fitness. No employee, agent, distributor, or other person is authorized to give additional warranties on behalf of Boston Gear, nor to assume for Boston Gear any other liability in connection with any of its products, except an officer of Boston Gear by a signed writing. Boston Gear Hayward Street, Quincy, MA fax.9. An Altra Industrial Motion Company Doc. No.90 0/0 Printed in USA