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Minarik RG501A User Manual

Cased, regenerative, variable speed dc drives
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R R G G 5 5 0 0 1 1 A A / / R R G G 5 5 1 1 1 1 A A
Cased, Regenerative, Variable Speed DC Drives

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Summary of Contents for Minarik RG501A

  • Page 1 R R G G 5 5 0 0 1 1 A A / / R R G G 5 5 1 1 1 1 A A Cased, Regenerative, Variable Speed DC Drives...
  • Page 2 Minarik Corporation. The information and technical data in this manual are subject to change without notice. Minarik Corporation and its Divisions make no warranty of any kind with respect to this material, including, but not limited to, the implied warranties of its merchantability and fitness for a given purpose.
  • Page 3 Safety Warnings • This symbol denotes an important safety tip or warning. Please read these sections carefully prior to performing any of the instructions contained in that section. • Have a qualified electrical maintenance technician install, adjust and service this equipment. Follow the National Electrical Code and all other applicable electrical and safety codes, including the provisions of the Occupational Safety and Health Act (OSHA), when installing equipment.

  • Page 4: Table Of Contents

    Contents Introduction Specifications Dimensions Regenerative Drives Installation Mounting ..........5 Wiring .
  • Page 5 Troubleshooting Block Diagram Prewired Connections Replacement Parts Cerificate of Compliance Limited Warranty inside back cover...
  • Page 6 RG501A and RG511A Dimensions ........2...
  • Page 7 Tables Fig. Description Page Recommended Line Fuse Sizes ....... .5 Field Output Connections .

  • Page 9: Specifications

    Armature HP Range HP Range Current with 115 VAC with 230 VAC Model (Amps DC) Applied Applied RG501A 10.0 1/4–1 1/2–2 RG511A 1/20–1/8 1/10–1/4 AC Line Voltage 115/230 VAC, ±10%, 50/60 Hz, single phase Armature Voltage (115 VAC Input) 0–90 VDC Armature Voltage (230 VAC Input) 0–180 VDC...

  • Page 10: Dimensions

    Dimensions Figure 1. RG501A and RG511A Dimensions...

  • Page 11: Regenerative Drives

    Regenerative Drives Most non-regenerative, variable-speed DC drives control current flow to a motor in one direction. The direction of current flow is the same direction as the motor rotation. Non-regenerative drives operate in Quadrant 1, and also in Quadrant 3 if the drive is reversible (see Figure 2). Motors must stop before reversing direction.

  • Page 12: Installation

    Installation Mounting NEMA 4X cased drives come with three 0.88 inch (22 mm) conduit knockout holes at the bottom of the case. The units may be vertically wall mounted using the four 0.25 inch (6 mm) slotted holes on the attached heat sink.

  • Page 13: Line Fusing

    1 inch. Line fusing RG501A and RG511A drives have line fuses preinstalled to fuseholders FU501 and FU502 (see Figure 3 for location). Factory installed line fuses are rated for maximum rated horsepower. Resize line fuses if a lower rated horsepower motor is used.

  • Page 14: Field Fusing

    Installation Field fusing To protect the motor field of shunt wound motors, all RG501A and RG511A drives have 1.5A 3AG field fuses installed to fuseholder FU503 (see Figure 3). If this fuse needs to be replaced, use a fuse of the same rating.

  • Page 15: Connections

    Connections Prewired Figure 5. Connections ® Assumptions: Minarik drives supply motor voltage from the A1 and A2 terminals. It is assumed throughout this manual that, when A1 is positive with respect to A2, the driven motor will rotate clockwise (CW) while looking at the output shaft protruding from the front of the motor.

  • Page 16: Field Output

    Installation Field output The field output is for shunt wound motors only. Do not make any connections to the field output when using a permanent magnet motor. See Table 2 for field output connections. Table 2. Field Output Connections Line Voltage Approximate Field Field (VAC)

  • Page 17: Slide Switches

    Installation Slide switches Set all slide switches to their proper setting before applying power (see Figure 8 ). Feedback Switch Set to ARM for armature feedback, or TACH for tachogenerator feedback. Armature Voltage Switch Set to 90 for 90 VDC motor, or 180 for 180 VDC motor.

  • Page 18: Mode Select Switches

    Installation Mode select switches Mode select switches, located on the logic board (see Figure 9), are preset with switch 1 OFF and switch 2 ON. This allows you to operate the drive without the use of limit switches. Change mode select switch settings when power is off.

  • Page 19: Operation

    Operation Before applying power • Verify that no conductive material is present on the printed circuit board. • Set all switches to their proper settings. • Verify that the AC supply is properly balanced. Startup 1. Set the power switch to 0 (off); set forward and reverse speed adjust potentiometers to 0;...

  • Page 20: Jogging The Motor

    Operation Jogging the motor The RG501A and RG511A has a jog option, allowing you to jog the motor in the forward or reverse direction as long as the forward or reverse pushbutton is pressed. The drive can be switched to the jog mode while the motor is stopped, or is running in either the forward or reverse direction.

  • Page 21: Limit Switch Operating Modes

    Operation Limit switch operating modes The following is a description of the four limit switch operating modes. Mode 1 – Half cycle between forward and reverse limit switches 1. Press the forward pushbutton for Press FWD to go forward. forward motor rotation. Reverse Forward 2.
  • Page 22 Operation Mode 3 – Continuous cycle between forward and reverse limit switches 1. Press the forward pushbutton for Press FWD to go forward. forward motor rotation. Reverse Forward 2. Motor rotates in the forward Limit Limit direction until the forward limit Forward Direction Switch Switch...

  • Page 23: Warnings

    Operation Warnings Regenerative braking (by pressing the STOP pushbutton) is recommended for frequent stops. Do not use this method for emergency stopping. It may not stop a drive that is malfunctioning. Removing AC line power (both L1 and L2) is the only acceptable method for emergency stopping. Frequent regenerative braking produces high torque.

  • Page 24: Calibration

    Calibration Each drive is factory calibrated to its maximum horsepower rating. Readjust the calibration trimpot settings to accommodate lower horsepower motors. All adjustments increase with clockwise (CW) rotation, and decrease with counterclockwise CCW rotation. Use a non-metallic screwdriver for calibration. Each trimpot is identified on the printed circuit board. Power board trimpots MIN SPD MIN SPD may be calibrated if the CCW side of the speed adjust...

  • Page 25: Fwd Acc

    Calibration FWD ACC The FWD ACC trimpot setting determines the time the motor takes to ramp to either a higher speed in the forward direction or a lower speed in the reverse direction, within the limits of available torque. FWD ACC is factory set for its fastest forward acceleration time.

  • Page 26: Fwd Tq

    Calibration Approximate calibration: If the motor does not maintain set speed as the load changes, gradually rotate the IR COMP trimpot CW. If the motor oscillates (overcompensation), the IR COMP trimpot may be set too high (CW). Turn the IR COMP trimpot CCW to stabilize the motor speed. See Figures 10 and 11 for recommended IR COMP trimpot settings.

  • Page 27: Rev Tq

    6. Adjust the REV TQ trimpot CW until the armature current is 120% of motor rated current. 7. Set the reverse speed adjust potentiometer to minimum and remove the stall from the motor. Figure 10. Recommended FWD TQ, REV TQ, and IR COMP Settings for RG501A (actual settings may vary with each application)
  • Page 28 Calibration Figure 11. Recommended FWD TQ, REV TQ, and IR COMP Settings for RG511A (actual settings may vary with each application) The deadband trimpot setting determines the time that will elapse between the application of current in one direction before current is applied in the opposite direction.

  • Page 29: Tach

    Calibration TACH (for use with tachogenerator feedback only) Calibrate the TACH trimpot setting only when a tachogenerator is used. The TACH setting, like the IR COMP setting, determines the degree to which motor speed is held constant as the motor load changes. To calibrate the TACH: 1.

  • Page 30: Rev Jog

    Calibration 1. Press JOG . 2. Press and hold the FWD pushbutton. The motor jogs in the forward direction. 3. Adjust the FWD JOG trimpot until the motor rotates at the desired forward jog speed. 4. Release FWD to stop the motor. REV JOG The REV JOG trimpot setting determines the motor speed when it rotates in the reverse direction in the jog mode.

  • Page 31: Troubleshooting

    Troubleshooting Warning Dangerous voltages exist on the drive when it is powered. When possible, disconnect the drive while troubleshooting. High voltages can cause serious or fatal injury. Check the following steps before proceeding: 1. The AC line voltage must be balanced, and match the voltage on the drive nameplate.
  • Page 32 (i.e. reversing). wiring to be sure noise is reduced or eliminated. 4. Field circuit is open. 4. Send in drive to Minarik repair department. Motor runs too fast at 1. MAX SPD setting is 1. Recalibrate MAX SPD. maximum speed setting too high.
  • Page 33 Troubleshooting Problem Possible Suggested Causes Solutions Line fuse does not blow, 1. Forward or reverse 1. Increase the forward or but the motor does not run speed adjust potentiometer reverse speed adjust when the forward or is set to zero speed. potentiometer setting reverse pushbutton is pressed...
  • Page 34 FWD or REV JOG speed Calibrate FWD JOG and is too slow or too fast not calibrated. REV JOG trimpots (see Calibration section). ® For additional assistance, contact your local Minarik Distributor, or the factory direct: phone (818) 502-1528; fax (818) 502-0716.

  • Page 35: Block Diagram

    Block Diagram...

  • Page 36: Prewired Connections

    Prewired Connections Figure 14. Prewired Connections to L1, L2 (115) and L2 (230)
  • Page 37 Prewired Connections Figure 15. Touch Panel, Logic Board, and Power Board Connections...

  • Page 38: Replacement Parts

    Replacement Parts Replacement parts are available from Minarik Corporation and its distributors for this drive series. Table 3. Replacement Parts Model No. Symbol Description Minarik P/N RG501A R501 0.01Ω, 5 W Resistor 032-0129 SCR501-508 800 V, 25 A SCR 072-0042...

  • Page 39: Cerificate Of Compliance

    2. The Original Equipment Manufacturer (OEM) will implement the product as a component of the machine being manufactured. AC Line Filters In addition to EMI/RFI safeguards inherent in the RG501A design, external filtering is required. ® Minarik requires the Corcom AC line filters listed in Table 4.

  • Page 40: Armature Filters

    The end user must use the filtration listed in this addendum to comply with CE. The OEM may choose to provide alternative filtering that encompasses the Minarik drive and other electronics within the same panel.The OEM has this liberty because CE is a machinery directive.
  • Page 41 Notes...
  • Page 42 Notes...
  • Page 43 6,000 hours, whichever comes first. Within this warranty period, the Corporation will repair or replace such products that are: (1) returned to Minarik Corporation, 901 East Thompson Avenue, Glendale, CA 91201-2011 U.S.A.; and, (2) determined by the Corporation to be defective.
  • Page 44 Other drives from Minarik Corporation: 901 East Thompson Avenue Glendale, California 91201-2011 Phone: (818) 502-1528 Fax: (818) 502-0716 www.minarikcorp.com Document number 250–0234, Revision 1 Printed in the U.S.A – 1/98 $11.00 North America – $12.00 Outside North America...

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Rg511a

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