Nord Drivesystems NORDAC LINK SK250E-FDS - Configuration

NORDAC LINK (SK 250E-FDS ... SK 280E-FDS) – Users Manual for Frequency Inverters as Field Distributors
74 BU 0250 en-3021
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4.5.4.3 Configuration
The most important functions are assigned via the parameters (P480) and (P481).
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Bus I/O bits
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WARNING
Unexpected movement due to automatic starting
In the event of a fault (communication interrupted or bus cable disconnection) the device
automatically switches off, since the device enable is no longer present.
Restoration of communication may result in an automatic start and therefore unexpected movement
of the drive unit. To prevent any hazard, a possible automatic start must be prevented as follows:
• If a communication error occurs, the bus master must actively set the control bits to “zero”.
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Initiators can be directly connected to the digital inputs of the inverter. Actuators can be connected via
the available digital outputs of the inverter. The following connections are each provided for four
application data bits:
BUS-IN Function (P480[-01…-05])
Status
Status
Bit 1 Bit 0
Bit 0
Enable right
1)
0
0
Motor is switched off
Bit 1
Enable left
1)
0
1
Field of rotation right present at motor
Bit 2
Jog frequency selection
1
0
Field of rotation right present at motor
Bit 3
Acknowledge fault
2)
1
1
Motor is switched off
Bit 4
3)
Release brake manually
1)
Enabling is with jog frequency 1 or 2 (depending on the
selection of bit 2)
2)
Acknowledge with flank 0

1.
For control via the bus, acknowledgement is not
automatically performed by a flank on one of the enable
inputs
3)
Only if plug connector option ”-ASI“ or “-AUX”
BUS-OUT Function (P481 [-01 … -04])
Status
Status
Bit 1 Bit 0
Bit 0
Inverter ready
0
0
Error active
Bit 1
Warning
0
1
Warning
Bit 2
Digital-In 1 status
1
0
Start disabled
Bit 3
Digital-In 4 status
1
1
Standby / Run
Bit 4
1)
Switch H1: Remote control active
Bit 5
1)
STO inactive
1)
Only if plug connector option ”-ASI“ or “-AUX”
Parallel actuation via the BUS and the digital inputs is possible. The relevant inputs are dealt with
more or less as normal digital inputs.
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