Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 57
CODE
FAULT DESCRIPTION
COMMFLT
Communication Failure on Duplex. This will occur when the power on the other
car is turned off, or the other car fails to communicate properly for 5 seconds.
Check the communication cable, and the termination jumpers, which are located
by the communication cable terminal strip.
DRCHECK
Door Check Fault. The Car or Hall Door Contacts Input was on (indicating the
doors are closed) while the Door Close Limit was on (indicating the doors are
open). This check is performed when the doors are fully open (Door Open Limit is
off) and the car is not on a Leveling Switch. The car will be held with the doors
open until the Door Contacts input goes off. The Car Door and Hall Door Contacts
are both checked independently. If this fault is not caused by a jumper on the
Door Contacts, then check the Car and Hall Door Contacts very carefully, and
check the wiring to the Door Contact Inputs and Door Close Limit Input.
LEV SWS
Leveling Switch Fault. Both Leveling Switch Inputs are on. This will shut the car
down. Check the Leveling Switches to make sure one of them has not stuck. The
switches must be adjusted so that only one leveling switch is energized at a time.
Then check the wiring for shorts. Cycle the power, or put the car on Inspection to
clear the fault. In some short floor situations, there may be an overlap of the
leveling switches between the floors. In this case special programming will allow
an overlap without causing a fault.
FIRE
Fire Service Phase 1 or Phase 2 was initiated. This does not indicate a fault in the
controller operation. Note: If Fire Service is not provided, or it is desired to
bypass Fire Service during initial installation, then jump the Hall Fire Switch
Bypass Position Input.
MRSMOKE
The Machine Room or Shaftway Fire Sensors were initiated. This signal is required
by the 1998 ANSI code, and will start the Fire Light flashing. It must be reset by
turning the H
all Fire Switch to “Bypass”.
SHUNT
The Shunt Trip Input was initiated. The car will stop at the next floor, and open
its doors. An output will then come on that can be used to initiate the Shunt Trip
Breaker, and turn power off to the controller.
DZFAULT
The Door Zone Switch was energized when the car was running Fast Speed or
when the car was slowing down and before it hit an Up or Down Leveling Switch.
The car will shut down when it stops at the next landing.
There are several situations that can give this fault that may not seem to be a
problem with the Door Zone Switch, but which ultimately the MH3000 sees as the
Door Zone Input being on when it should not be. In most cases the FSU or FSD
relay did not energize properly on a floor-to-floor run. These situations include:
- The Level Lockout Timer is too short. It must be long enough for the FSU or
FSD relays to energize and cut out the Door Zone Input. This timer should be
long enough to allow RU to energize, but not longer than the travel time from one
floor to the next.
–
The “RU” contact is series with the Up valves is energizing too late, preventing
the FSU relay from cuting out the Door Zone Input.
–
The UL or DL inputs are failing.
–
There is a failure in the Up or Down Normal Limit Sw, or Pressure Switch, or RU
contact, preventing FSU or FSD from energizing to cut out the Door Zone Input.
–
There is a loose wire or bad connection on terminal 6, 14, 14X, 16, 16X, 21 or
22 which is preventing FSU or FSD from energizing properly.
