Emerson 2330MKII manual Troubleshooting Indication Possible Cause, Corrective Action

Page 33

BOOK 0958-B

TROUBLESHOOTING

TABLE 6. TROUBLESHOOTING

INDICATION

POSSIBLE CAUSE

 

 

 

AC line open

 

 

 

Operator controls inoperative or con-

 

nected incorrectly

 

 

 

Open circuit between Connectors E1

 

and E2

 

 

 

Controller not reset

 

 

 

Line Voltage Selection Jumper J1 in

1. Motor won’t start

wrong position

(See “Inoperative

 

 

Motor,” page 21)

Controller not enabled

 

 

 

Loss of speed reference signal

 

 

 

Controller not adjusted correctly

 

 

 

Open shunt field winding or wiring to

 

the motor shunt field, causing loss of

 

torquea

 

 

 

Motor failure

 

 

 

Control board failure

 

 

 

Wiring faulty or incorrect

 

 

 

Circuit, component, or wiring

 

grounded

 

 

2. Controller line fuse

SCR1, SCR2, SCR3 or SCR4 shorted

 

blows when AC line

Bridge Diode D1b shorted

power is applied to the

 

Varistor RV1 shorted

controller

 

 

 

Shunt Field Diode D39, D40, D41, or

 

D42 shorted a

 

Motor shunt field shorted or groundeda

 

Control board failure

 

 

Cont’d on next page

 

 

 

CORRECTIVE ACTION

Be sure rated AC line voltage is applied to the controller.

Repair accordingly.

A wire jumper or switch must connect E1 to E2.

Initiate a Stop command and then a Start com- mand.

See Step 5 on page 5 under, “Installing The Controller.”

Be sure +24 VDC is applied to Terminal TB2 8.

Check for 0 - 10 VDC speed reference signal.

Turn the ACCEL and CUR LMT potentiome ters fully counterclockwise (100%).

Check the motor shunt field and associated circuitry for a loose connection or a broken wire. Repair accordingly.

Repair or replace the motor.

Replace the control board.

Check all external wiring terminating in the controller. Correct accordingly.

Remove ground fault.

Replace shorted SCR’s or the control board.

Replace shorted diode or the control board.

Replace RV1 or the control board.

Replace shorted diode or the control board.

Repair or replace the motor.

Replace the control board.

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Contents Book 0958-B Page 3 HP Book 0958-B Table of Contents List of Illustrations List of TablesBlank Following must be strictly adhered to at all times Section General Information Introduction General DescriptionModel Types Motor Selection Installation Guidelines Section InstallationDo not use solid wire Jumper J4 Position Motor Armature Current Rating Amperes Installing the ControllerInstall the controller cover, if used Controller Mounting Configurations Controller Mounting Dimensions Logic connection diagram, Run-Stop-Jog Switch Book 0958-B Book 0958-B Book 0958-B Signal Connection Diagram, Motor Speed Potentiometer Signal Connection Diagram, Tachometer Feedback Signal Connection Diagram, 4-20mA Interface Page Initial Startup Initial Potentiometer Settings DescriptionBook 0958-B Section Operation Power ON/OFF RUNStop Speed Control Torque ControlJOG Load Monitor ReverseCurrent Loop Transducers Inoperative MotorBlank Adjustment Instructions Acceleration Section Maintenance and Repair GeneralDeceleration IR CompensationTachometer Feedback Setup Minimum SpeedCurrent Limit Corrective Action Troubleshooting Indication Possible CauseOne or more SCR‘s or Diode D1b Indication Possible Cause Corrective Action TroubleshootingTroubleshooting Indication Section Parts List Parts LIST, Series 2330 Mkii Controllers Fincor PartPart Blank 120% Section Ratings and SpecificationsController Weights Operating Voltages and SignalsPerformance Characteristics Operating ConditionsAdjustments SpecificationsShunt Field Data Tachometer Feedback Voltage Selection Section Drawings Functional Schematic, Series 2330MKII Series 2330MKII Control Board, 1/6 3HP Blank Index Maximum Speed Book 0958-B
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