DMG JUNIOR 4.0 - Troubleshooting

User
Manual
File Name
Revision
Date
Page
93010350.EN_A_Junior 4.0 User
Manual_240828_v1.0 - VVVF
1.0
28/08/2024
48 / 90
6 Troubleshooting
N.
Fault
Type
Description
Remedy
1
Reset
Power supply: the controller was
restarted. For informational purpose
only.
Furthermore, if there are devices that
require a restart, it can present itself
with the following specific codes:
Cod 9: 9 months without power cycle
reset, lift continues to operate.
Cod 12: 12 months without power
cycle reset, lift is out of service. Must
be executed a POWER restart
Cod 255: remote fault reset executed.
Cod 9 / 12 are present only in case of
LM2 inverter or LIMAX3CP. Power
restart is requested from these devices.
Cod 255: only for information.
2
Contactors
blocked
One or more contacts associated to
the power contactors and connected
in series on the input CCO and CCOB
or YBRK remain open after the car
stop.
--------------------------------------------------
VVVF
Cod 0: CCO open
Cod 1: CCOB open
Cod 2: CCO+CCOB open
--------------------------------------------------
HYDRO
Cod 11: YBRK open (CM1)
Cod 12: CCO open (CM2)
Cod 13: CCO open (CM1 or CM2)
Cod 14: YBRK open (CM2 or Soft
Starter)
Cod 15: CCO open (CM1 or CM2)
Cod 200: CCOB open (Valves
contactors)
VVVF - Check:
1- the series of auxiliary contacts (NC)
of the power contactors and other
cables in series on the circuits
2- the signals circuit wiring
3- the connection of the CCO and
CCOB on the board
--------------------------------------------------
HYDRO - Check:
1- the series of auxiliary contacts (NC)
of the motor contactors
2- wiring of signal input indicated in the
wiring schematic.
3- the connection of the CCO, CCOB
and YBRK on the
boards
3
Low speed too
long
Car moving at low speed for too long.
In case of VVVF may be too low
engine torque in the approaching floor
phase.
Check:
1- Check parameter “Low Speed fault
time” (§ 5.5) and increase time if
necessary
2- the elevator speed to a low speed (in
the case of VVVF); increase it if
necessary
3a- the decelarating distance to the
plane indicated (magnets FAI / FAS)
3B- value of the distance R1D / R1S if
Encoder is used (§ 5.9)
4
Overload
Overload input (SUR) activated (NO
contact)
Check
1- the SUR input (if locked) and wiring
2- the setting of the load weighing
device