9 Troubleshooting
Thanks to the digital structure of the control systems, a large number
of possible reasons for malfunctions can be displayed concisely. Nor-
mally the reason can be found with the help of these messages/mal-
functions in the event log or malfunction list. If the lift has been shut
down due to a malfunction, the background of the LC display flashes
and the abbreviation »BLK« (blocked) is displayed. To find out the
exact reason of the malfunction, please refer to the event log or the
malfunction list. After eliminating the reason for the malfunction,
remove the block by pressing the Call/End button and answer the
information with the OK button or by quickly switching off the opera-
tional voltage.
9.1 Monitoring Routines
The bp308 software monitors a lot of signals for correct behaviour
and time characteristics. If any discrepancy arises, a corresponding
error message is stored in the event log and time stamped. You can
read how often this error occurred from the malfunction list.
If a control time or monitoring time (e.g. start monitoring, runtime
monitoring, deceleration monitoring) is exceeded, the lift is stopped
and all travel commands cancelled. If any warning devices respond,
the lift is shut down at the next landing ahead and blocked. Warning
devices are, for example, motor overload switch, pressure switch and
over-temperature switch of the hydraulic system.
If the safety circuit responds, the travel is interrupted and all travel
commands deleted.
The door lock monitoring, if responding, also results in the travel
commands being deleted. The door lock monitoring responds after
three attempts.
The flush-level position of the car is monitored through the abso-
lute encoder or flush-level switches. If the motionless car leaves the
flush-level position, it is re-levelled, if necessary with open doors
thanks to the safety circuitry SMZ-04 that correspondingly bypasses
the door and locking contacts.
PTC thermistor
Terminals PTC/PTC, it is possible to monitor any common positive
temperature thermistor.
Overload terminal 20
Terminals 100/20. Maximum output current 2,2 A.
Excess voltage in the system
Terminals 100/20/PE. For connections refer to STM-02
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