ACE-tronics G9 ASD Installation and Operation Manual 255
Control Power
Under-Voltage
UP2 • This fault is caused by an under-voltage condition at the 5, 15, or the 24
VDC supply.
• 3-phase input voltage low.
CPU2 Fault E-26 • CPU malfunction.
•
Control board malfunction.
CPU
Communication
Error
E-19 • CPU data Transmit/Receive error.
CPU Fault ERR4 • CPU malfunction.
•
Control board malfunction.
CPU Processing
Error
E-21 • Software processed incorrectly.
• Make service call.
Dynamic Braking
Resistor
Over-Current
OCR • ASD inability to discharge the bus voltage during regeneration.
•No Dynamic Braking Resistor (DBR) installed.
• DBR value is too low.
• Deceleration time is too short.
• Improper DBR setup information.
• Defective IGBT7 (or IGBT7 ckt.).
• 3-phase input voltage is above specification.
Dynamic Braking
Re
sistor Overload
OLR • Deceleration time is too short.
• Improper DBR setup information.
• Improper Stall setup information.
EEPROM Fault EEP1 • EEPROM write malfunction.
EEPROM Read
Error
EEP2/EEP3 • EEPROM read malfunction.
Emergency Off E • Output signal from the ASD is terminated and a brake may be applied if
so configured.
• Stop-Reset pressed twice at the EOI.
• EOFF command received remotely.
• ASD reset required.
Encoder Signal-
L
oss Error
E-12 • ASD is configured to receive a signal from a shaft-mounted encoder and
no signal is being received while running.
• Disconnection at the Encoder circuit.
• Motor is stopped and is generating torque via torque limit control.
• ASD is not configured properly.
External Fault EFLT
• In a multiple-ASD configuration, this is the fault screen display of an
ASD that is not the cause of the fault, but is unable to continue with
normal operations.
LCD Screen LED Screen Possible Causes
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