Digital Input Signals - Danfoss Vacon NXP Applications Manual

68 · vacon
5.4.2

Digital input signals

2.4.2.1 Start Signal 1
Signal selection 1 for the start/stop logic. This parameter is used to select the input for
Run Request signal
2.4.2.2 Start Signal 2
Signal selection 1 for the start/stop logic. This parameter is used to select the input for
Stop Request signal.
2.4.2.3 Open MCB
This parameter is used to select the input for the Open Contactor signal. The signal is
used to force the main circuit breaker open (MCB or MCB2) and to stop the modulating.
When this input is used to stop AFE and open a main circuit breaker, the DC link must be
discharged and recharged to close the main circuit breaker again and to continue
modulation.
If the Force Main circuit breaker Open signal is not used the option
selected.
When the control is on the keypad, pressing the Stop button more than a 2 second opens
the MCB.
2.4.2.4 MCB Feed Back ID1453
This parameter defines which digital input is used to the monitor circuit breaker status.
The drive monitors the status and does not start if the state of the contactor does not
correspond to the required status, that is, is open when it should be closed.
If the status of the main circuit breaker is not monitored, there will be a 3 s forced delay
before drive starts.
2.4.2.5 Fault Reset
Contact closed: all faults are reset. Rising edge.
2.4.2.6 Ext Fault 1
Contact closed: the fault is displayed and the motor stopped. Fault 51. Can be inverted by
the input inversion control.
2.4.2.7 Ext Fault 2
Contact open: the fault is displayed and the motor stopped. Fault 51. Can be inverted by
the input inversion control.
2.4.2.8 Run Enable
When the signal is low, the drive will lose READY status.
Contact open: the start of drive disabled.
Contact closed: the start of drive enabled.
5
ID403
ID404
ID1600
ID414
ID405
ID406
ID407
Tel. +358 (0)201 2121 • Fax: +358 (0)201 2121 205
Description of parameters
0.1 = FALSE must be