GAL GALaxy eHydro - Page 112

GALaxy eHydro Elevator Controller Section 6 – Main CPU Faults & Detailed Faults
6-48
Table 6-0: Main CPU Faults
Faults
Description
Possible Cause/Suggested Fix
CPU DN Off
Fault
CPU DN-1 Failed Off
during start or
leveling. The
controller is
attempting to run the
car high speed in the
up direction but the
UT input is off.
• Faulty Communications with the APS selector. Check for
APS selector CAN faults. Follow the possible
cause/suggested fix for the APS SEL CAN Com Err fault.
• Improper learn of the hoistway. Make sure the hoistway
learn has been completed for every floor. Check the
Hoistway table for errors.
CPU DT Off
Fault
CPU DT-1 Failed Off
during start. The
controller is
attempting to run the
car high speed in the
up direction but the
UT input is off.
• Faulty Communications with the APS selector. Check for
APS selector CAN faults. Follow the possible
cause/suggested fix for the APS SEL CAN Com Err fault.
• Improper learn of the hoistway. Make sure the hoistway
learn has been completed for every floor. Check the
Hoistway table for
errors.
CPU UN Off
Fault
CPU UN-1 Failed Off
during start or
leveling. The
controller is
attempting to run the
car high speed in the
up direction but the
UT input is off.
• Faulty Communications with the APS selector. Check for
APS selector CAN faults. Follow the possible
cause/suggested fix for the APS SEL CAN Com Err fault.
• Improper learn of the hoistway. Make sure the hoistway
learn has been completed for every floor. Check the
Hoistway table for
errors.
CPU UT Off
Fault
CPU UT-1 Failed Off
during start. The
controller is
attempting to run the
car high speed in the
up direction but the
UT input is off.
• Faulty Communications with the APS selector. Check for
APS selector CAN faults. Follow the possible
cause/suggested fix for the APS SEL CAN Com Err fault.
• Improper learn of the hoistway. Make sure the hoistway
learn has been completed for every floor. Check the
Hoistway table for
errors.
CTCan Bus Off Error
CTCan Bus Off Error.
The Can bus has been
inactive for too long a
period of time.
• Faulty CAN bus wiring. Check the Can bus terminal
connections on all boards.