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Motor Saver 201A-AU Installaion Instructions
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Motor Saver 201A-AU Installaion Instructions

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INSTALLATION
INSTRUCTIONS
MODELS
201A-AU
201-575-AU
Rapid City, SD, USA, 02/2010
2880 North Plaza Drive, Rapid City, South Dakota 57702
(800) 843-8848 · (605) 348-5580 · fax (605) 348-5685
Revision B1

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Summary of Contents for Motor Saver 201A-AU

  • Page 1: Installation Instructions

    INSTALLATION Revision B1 INSTRUCTIONS Rapid City, SD, USA, 02/2010 MODELS 201A-AU 201-575-AU 2880 North Plaza Drive, Rapid City, South Dakota 57702 (800) 843-8848 · (605) 348-5580 · fax (605) 348-5685...
  • Page 2 ® SymCom’s MotorSaver Model 201A-AU is an auto ranging plug-in voltage / phase monitor designed to protect 3-phase motors regardless of size. It is used on 190-480VAC (475-600 for Model 201-575-AU), 50/60 Hz motors to prevent damage caused by single-phasing, low voltage, high voltage, phase reversal, or voltage unbalance conditions.
  • Page 3 Figure 1: Typical Wiring Diagram for Control and Alarm Figure 2: Pin-Out Diagram © 2010 SymCom, Inc. All Rights Reserved...
  • Page 4 SETTINGS Rotate the knobs to the appropriate setting for the application following the guidelines below. Do not apply excessive force when adjusting settings. L ine Voltage Rotate the VOLT ADJ. (VAC) knob to the nominal 3-phase line voltage feeding the motor to be protected.
  • Page 5 Calculating Voltage Unbalance NEMA MG1 Unbalance Formula % Voltage Unbalance = Maximum Deviation from the Average x 100% Average Example: The measured line-to-line voltages are 203, 210, and 212. Average = 203 + 210 + 212 = 208.3 The maximum deviation from the average is the largest difference between the average voltage (208.3) and any one voltage reading.

  • Page 6: Operation

    OPERATION ® After applying power to the MotorSaver , the green RUN light will blink during the restart delay. After ® the restart delay time has expired, the MotorSaver will energize its output contacts (open the normally closed and close the normally open contacts) and the RUN light will turn solid green. Automatic Reset Mode Set the RESTART (SEC) knob to the desired restart delay time.

  • Page 7: Troubleshooting

    TROUBLESHOOTING LIGHT SYMPTOM SOLUTION PATTERN Verify L1, L2 & L3 are connected to terminals 3, 4 & 5. Measure the three line-to-line voltages. If any of the No lights are on - voltages are below the specified operating voltage, the the unit seems ®...
  • Page 8 DIMENSIONS 1.75 (44.55) 2.375 (60.331) BOT TOM 3.15 (80.01) (12.7) SIDE NOTE: Use of the OT08-PC or RB08-PC octal socket, manufactured by Custom Connector Corp., is required for the MotorSaver to qualify as a UL Listed device. The OT08-PC is 35mm DIN rail compatible.
  • Page 9 ® MOTORSAVER 201A-AU SPECIFICATIONS Functional Characteristics Low Voltage Trip 90% of setting Reset 93% of setting High Voltage Trip 110% of setting Reset 107% of setting Voltage Unbalance Trip 2-8% Reset Trip setting - 1% (5-8%) Trip setting - 0.5% (2-4%)
  • Page 10 NOTES © 2010 SymCom, Inc. All Rights Reserved...
  • Page 11 NOTES © 2010 SymCom, Inc. All Rights Reserved...
  • Page 12 For warranty information, please see Terms and Conditions at www.symcom.com Visit us at www.symcom.com to see our complete product listing! Need something special? Contact SymCom today for your custom solution! 800-843-8848 © 2010 SymCom, Inc. All Rights Reserved...

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201-575-au