FEC DSP1500 (SAN3) - Manual (Page 119)

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enFORCE Operation Manual
8.2 Load Cell Abnormals [ A1_* ]
• Code A1_0 - LOAD CELL / ZERO VOLTAGE ERROR
Zero level does not match master level read from tool EEPROM during power on initialization.
CAUSE:
1. When the tool load cell is sensing excessive force due to forces on the press shaft.
2. If the controller or the load cell cable is located in an electric or magnetic noise field.
3. When the load cell, load cell cable or the controller malfunctions.
RECOVERY:
1. Check that the press shaft has no external force applied to it. (Nothing touching the press
shaft assembly or that anything mounted to it does not bind.)
2. Verify that the cable or controller are not located near any high voltage transient power
sources. Relocate as required and reinitialize.
3. Exchange load cell cable, tool and/or controller with known working units. Reinitialize the
system after each exchange, and make note of any change in the location of the abnormal.
4. Replace the defective component.
• Code A1_1 - LOAD CELL / CAL VOLTAGE ERROR
Calibration voltage error during power on initialization.
CAUSE:
1. When the tool load cell is sensing excessive load due to forces on the press shaft.
2. If the controller or the load cell cable is located in an electric or magnetic noise field.
3. When the load cell, load cell cable or the controller malfunctions.
RECOVERY:
1. Check that the press shaft has no external force applied to it. (Nothing touching the press
shaft assembly)
2. Verify that the cable or controller are not located near any high voltage transient power
sources. Relocate as required and reinitialize.
3. Exchange load cell cable, tool and/or controller with known working units. Reinitialize the
system after each exchange, and make note of any change in the location of the abnormal.
4. Replace the defective component.
• Code A1_2 - LOAD CELL / ZERO CHECK ERROR
Zero level voltage loaded to memory from tool EEPROM during initialization does not match the
actual zero level during a self check (while the self check function is DISABLED).
CAUSE:
1. When the tool load cell is sensing excessive force due to pressure or vibration during the
press cycle start.
2. If the controller or the load cell cable is located in an electric or magnetic noise field.
3. When the load cell, load cell cable or the controller malfunctions.
RECOVERY:
1. Check that the press shaft has no external force applied to it.
2. Verify the tool mounting bolts are tight and nothing is causing excessive vibration to the tool.
3. Verify that the cable or controller are not located near any high voltage transient power
sources. Relocate as required and attempt again the press start input.
4. Exchange load cell cable, tool and/or controller with known working units. Input the start
signal after each exchange, and make note of any change in the location of the abnormal.
5. Replace the defective component.
Chapter 8: Troubleshooting