GAL GALaxy eHydro Manual page 135

GALaxy eHydro Elevator Controller
Table 6-0: Main CPU Faults
Faults
NTS UNFailed Off
NTS UN
Failed On
NTS UT
Failed Off
Description
NTS UN I/O Failed Off
during start or
leveling. The
controller is
attempting to run the
car in the up direction
but the UN input is
off.
NTS UN I/O Failed On
during start. As part of
the redundancy check,
the Main CPU sends a
command to the NTS
processor to turn of
the UN, DN, UT and
DT outputs prior to
turning on any valve
outputs to verify that
the NTS outputs have
not faulted on. During
this process, the UN
output or the UN
input stayed on.
NTS UT I/O Failed Off
during start. The
controller is
attempting to run the
car high speed in the
up direction but the
UT input is off.
Section 6 – Main CPU Faults & Detailed Faults
Possible Cause/Suggested Fix
• The UN output failed. Replace the UN output module.•
The UN input failed. Replace the UN input board.• The NTS
processor has turned the UN output off. Check for errors
from the NTS processor.• The NTS processor has a position
error from the APS selector. Verify the setup of the APS
selector and that the NTS processor is communicating with
the selector.• The Safety PAL has determined that it is
unsafe to run the car such as the doors are open. Check for
a Safety Pal Fault and checkthe status of the I/Os of the
Safety PAL.
• UN output shorted on. Replace the output module.
• UN input failed on. Replace the input board.
• UN test jumper left on the module. Remove the test
jumper.
• The UT output failed. Replace the UT output module.
• The NTS processor has turned the UT output off. Check
for errors from the NTS processor.
• The NTS processor has a position error from the APS
selector. Verify the setup of the APS selector and that the
NTS processor is communicating with the selector.
• The Safety PAL has determined that it is unsafe to run the
car such as the doors are open. Check for a Safety Pal Fault
and check
the status of the I/Os of the Safety PAL.
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