TROUBLESHOOTING
Vertical Express Product Manual 4-21 88500 v.1.0
Troubleshooting Section IOF Card (6300AHV001)
IOF - LED Definitions
*Certain system conditions will let the SP or NP open the safety string, have SPGOOD/NPGOOD LEDs illuminated, and have
no faults. Example: Interlock Open (IT,IF, IR, IB, CT, CB, CF, or CR).
LED Color
Desired
Status
Definition
NPBAD Red OFF ON if the NTSD processor has detected a system critical fault.
NPGOOD* Green ON ON if the NTSD processor is running with no faults.
SPBAD Red OFF ON if the safety processor has detected a system critical fault.
SPGOOD* Green ON ON if the safety processor is running with no faults.
PLDBAD Red OFF ON if the PLD has detected a fault.
PLDGOOD Green ON ON if the PLD is running with no faults.
AC Green ON ON if 120VAC present at CON18, relay EPEN energized, and fuses F-EP and F-PS are good.
DOORS Green
ON
All hoistway and car doors are closed,
or
Open doors are being bypassed due to a car in the door zone, HWAS Operation, or door
bypass switch use,
or
Car doors are open and the end of a run check is active (typically not viewable LED activity
due to the speed of that check)
OFF
One or more hoistway and/or car doors are open,
or
Open doors are not being bypassed by the car being in the door zone, HWAS Operation, or
door bypass switch use,
or
Car doors are open and the end of a run check is not active (typically not viewable LED
activity due to the speed of that check)
P24 Green ON ON if 24VDC is present at CON20 and fuse F-P24 is good.
P24G Green ON
ON if 24VDC is present at CON20 and fuses F-P24GS and F-P24G are good (or if 24VDC is
fed by another powered-up car in the group via CON21 cross-connections).
P24GS Green N/A Not used.
DFS Green ~ ON if the system is trying to energize the DOWN FAST valve solenoid.
DSS Green ~ ON if the system is trying to energize the DOWN SLOW valve solenoid.
UFS Green ~ ON if the system is trying to energize the UP FAST valve solenoid.
USS Green ~ ON if the system is trying to energize the UP SLOW valve solenoid.
MCC1 Green ON ON if the system is trying to start the pump motor (contactor or electronic starting).
MCC2 Green ~
ON if the system is trying to start the pump motor (contactor starting) or provide power to
the starter (electronic starter).
SAFCPU Green ON
ON if the CPUC is allowing a complete safety string (SAFCPU output commanded ON). OFF
when the CPUC has opened the safety string (SAFCPU output commanded OFF).
SAFSP Green ON
ON if safety processor is allowing a complete safety string (SAFSP output commanded ON).
OFF when the safety processor has opened the safety string (SAFSP output commanded
OFF).
SAFE Green ON ON if 120VAC from a complete safety string is present at terminal 131 as seen by the CPUC.
NTSNP Green ON
ON if the NTSD processor is allowing a high speed run (NTSNP output commanded ON).
OFF when the NTSD processor is forcing the FAST solenoids off when the selector encoun-
ters a terminal slowdown magnet (NTSNP output commanded OFF).
TSRCPU Green ON
ON if the CPUC is allowing car movement in a terminal zone (TSRCPU output commanded
ON). OFF when the CPUC is forcing all valve solenoids off when the selector encounters a
terminal slowdown magnet and other terminal speed reduction efforts have failed to slow
down the car (NTSNP output commanded OFF).