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In-Car Stop Switch in Stop Position
The J22 processor on the Cartop SRU board has scanned inputs 504 and 506 (and 513 if In-Car
Inspection option is enabled) to determine if car is on inspection or in automatic mode. The
J21 processor has scanned redundant inputs 503 and 505 (and 512 if IC inspection) and
determined a different mode of operation.
If a software upgrade has been performed recently then it is possible that one of the SRU
boards was mis-programmed.
Verify the wiring on inputs 503 through 506 (and 512 and 513 if IC inspection). The input pairs
[503,504] and [505,506] (and [512, 513] if IC inspection) should go on and off together as the
various inspection/access enable switches are toggled on and off.
Controller boards may need to be reprogrammed if they contain invalid software.
Cartop SRU board may need to be replaced.
“MS” faults are often caused by a fast power glitch on an input rather than a longer glitch
which will cause a “Rdn” F31, F32, or F38 fault.
GSW, DCL or DPM not flagging in Normal Operation
Extra Bytes 0-0 (any door): Controller was trying to close or nudge the doors and timed out
before seeing GSW, DPM and DCL.
All three signals (GSW, DPM, DCL) have to be flagged in Normal Operation.
Car is on inspection, GSW is not made, and the Car Door Bypass enable switch is not active.
Car is outside of a door zone and the GSW is not made.
Extra Bytes 1-0 (front door): The GSW input for the front (or only) door is not powered, the car
is not in a door zone, and the current operating mode does not allow for running with the car
doors open.
Extra Bytes 2-0 (rear door): Same as above but for rear door.
Extra Bytes 3-0 (any door): Controller detected no GSW for at least 500ms while outside a door
zone and exceeding 20 fpm.
Extra Bytes 0-0 (any door): Check inputs for GSW, DPM, and DCL. Verify they are transition
properly as car door is opened and closed.
If DPM is not flagging, jump it to the GSW inputs so it flags at the same time as GSW.
If car is on inspection and needs to be moved then either close the car doors or activate the
Car Door Bypass Enable switch. Note that the bypass switch will not work on Machine Room
Inspection.
A bad door zone magnet may cause the controller to lose the DZ input while stopped at a
floor. If this happens while the doors are open this fault will be logged.
Extra Bytes 1-0 (front door): Verify that the front car door is closed.
Verify that the GSW circuit is operating correctly.
Verify that the door zone sensor and magnets are working.
Extra Bytes 2-0 (rear door): Same as above but for rear door.
Extra Bytes 3-0 (any door): Check gate switch and wiring.
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