GALaxy eHydro Elevator Controller Section 6 – Main CPU Faults & Detailed Faults
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Table 6-0: Main CPU Faults
Possible Cause/Suggested Fix
Car unexpectedly hit
the Down Normal
Limit while running
down.
• The Safety PAL detected a fault condition and turned off
the UN output from the NTS processor.
• The NTS processor detected a fault condition and turned
off the UN output.
• APS Selector communications loss to the Main CPU.
• APS Selector communications loss to the NTS processor.
• Selector not reading the correct position from the tape.
The door did not
reach the Door Close
Limit within the door
close protection time.
• Door Close Limit (DCL) not adjusted properly.
• Faulty Door Close Limit (DCL). Replace DCL input chip.
• Trash in the door track preventing door from closing.
• The car was either running or preparing to run
and lost a door lock input. Check the adjustment of the
door.
• Voltage Sensor Board Related. Voltage being monitored
for Door Operator dropped below the setting for parameter
'Low Door Volt '
• Door Motor Overload signal tripped. Check Input chip for
DMO signal
The door did not
reach the Door Open
Limit within the door
open protection time.
• Door Open Limit (DOL) not adjusted properly.
• Faulty Door Open Limit (DOL). Replace DOL input chip.
The auxiliary door
zone DZA/DZAc set
from the position
count of the APS
selector did not go off
during a run.
• The APS selector did not change count during a run. Check
for faults related to the APS selector. Verify that the APS
selector counts change while the car is running.
• The elevator did not leave the floor on a run attempt.
Verify that the elevator can run from the landing. Check the
fault log for another fault that could prevent the car from
running.