TECHNICAL TROUBLESHOOTING continued
Controller Displays “MOTOR OVER CURRENT” - Platen does not move at all
Check voltage of limit switches. 5.6 VDC when switch is Open, 0 VDC when switches are closed.
NO
Check for 120 volts at the motor speed controller. Pins 3 & 4.
NO
Possible broken connection between the motor speed controller and the terminal block, terminal marked “SW”.
YES | Replace defective Limit | |
Switch | ||
|
YES | Check for 120 - 140 VDC on |
| Replace defective Motor |
pins 1 & 2 or Motor Speed | NO | Speed Controller. | |
| Controller. |
|
|
| YES |
|
|
| Check for positive |
|
|
| connection at input leads |
|
|
| of Linear Actuator. |
|
|
| YES |
|
|
| Check for binded actuator by |
| From behind the unit |
| disconnecting the upper | NO | manually raise and lower the |
| mounting pin, and manually | platen by lifting up on the | |
| spinning actuator shaft. |
| platen arms. |
| YES |
| YES |
|
|
| |
|
|
| Replace worn or damaged |
| Replace defective linear |
| components. |
|
|
| |
| actuator. |
|
|
Controller Displays “MOTOR OVER CURRENT” - Platen stops and moves to lower limit
Check voltage of upper limit |
| Does Upper Limit |
|
|
switches while platen is in the | YES | Switch change states of 5.6 | YES | Replace defective Motor |
upward movement. |
| VDC to 0 VDC? |
| Speed Controller. |
|
| NO |
|
|
|
| Replace faulty Upper Limit |
|
|
|
| Switch. |
|
|
Part # JIBSM08 Rev.6 (08/04/09) | Page 43 |
