OPERATING MANUAL NBS PRODUCT DESCRIPTION
ThyssenKrupp Aufzugswerke GmbH
2.2.1.2 Interface indicators
(A)
NBS contactor release monitoring: run may only be initiated if the contactors
+NBS-K77.1, +NBS-K77.2 and +NBS-K77.5 dropped out before the start of
the run.
(contactor contact chain closed)
(B)
Run signal to NBS: the signal must be applied during the entire run.
(C)
Run enable from NBS: a driving motion (run) is only permitted if the
contactors +NBS-K77.1, +NBS-K77.2, +NBS-K77.3 and +NBS-K77.5 have
picked up. (Contactor contact chain closed)
2.2.2 Initial situation
The elevator is at a standstill. The service brake brakes the drive firmly.
There is no run command.
Safety switch +T-S102.1 is closed. The operating mode selector switch
+NBS-S77 is open in the switch position "normal mode".
The brake magnet +M-Y78 has no current. The NBS emergency brake thus
also brakes the drive firmly. The closed monitoring switch +M-S78 means
there is control voltage 24 V = at relay +NBS-K77.4. Relay +NBS-K77.4 has
picked up. Indicator lamp +NBS-H77 does not light up.
The power supply +NBS-G77.2 provides the control voltage of 24 V.
The die 230V AC is provided as mains voltage at the input of the NBS control
system terminal X2:L.
This mains voltage also supplies the module from generation of the brake DC
voltage G77.1 via make contacts of the NBS contactors.
Contactors +NBS-K77.1 +NBS-K77.2, +NBS-K77.5 have dropped out without
voltage. Contactor +NBS-K77.3 receives no voltage from the elevator control
system and has therefore also dropped out.
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