description of parameters vacon • 81
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1716 Sel PosPhasing
Selection of digital input for positive phasing command. In fieldbus control bit 3 in the
fieldbus control word selected by P2.7.11 (default Process data in1) is used for a positive
phasing command. The phasing distance is set by P2.9.3.1 in user units (u).
1717 Sel NegPhasing
Selection of digital input for negative phasing command. Same as ID 1716 but in negative
direction. In fieldbus control bit 4 in the fieldbus control word selected by P2.7.11
(default Process data in1) is used for a negative phasing command.
1720 Synchronization engaged
(2.3.3.28)
Selector of digital or relay output for the “Synchronization engaged” signal. This supervi-
sion signal indicates that the follower drive has achieved space synchronization to the
master reference (See Diagram 3).
1721 Ratio changing
(2.3.3.29)
Selector of digital or relay output for the “Ratio changing” signal. This supervision signal
indicates that the ratio of the follower drive synchronization to the master speed is
changing. This occurs after a new ratio value has been set (either from parameter or
fieldbus) and the control is still ramping the ratio to the new value.
1722 External brake opened
(2.3.3.30)
Selection of digital output for indication that mechanical brake is fully open. This output
can be connected to other drive (Master) for releasing of the reference when follower
drive is ready to run.
1730 Position error F R
(2.6.20)
Response to position error fault
0= No action
1= Warning
2= Fault, stop mode based on P2.4.7 Stop function
3= Fault, coast
1731 Position error threshold
(2.6.21)
Position threshold for position error fault supervision
65536 counts = 1 engineering space unit [u].
Default value is 3932160 = 60 [u]. Range is 0 thru 2
31
-1.
The actual position of the follower drive is monitored with a symmetrical error band of
+/- P2.6.21 around the reference position.
1732 Power unit temperature sensor supervision
The temperature supervision of the power unit can be disabled by setting this parameter
to 1.
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