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Parameter and variable descriptions – Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE User Manual

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PARAMETER AND VARIABLE DESCRIPTIONS

1557-UM050F-EN-P – June 2013



Local Discrete Inputs [Local inputs]
Linear number:

260

Minimum value:

0000 Hex

Maximum Value:

FFFF Hex

Analog Output Scaling: N/A
This variable is the value of the 16 local discrete digital inputs. It is bit encoded as shown below:

xxx1H - not stop
xxx2H - start
xxx4H - input contactor closed
xxx8H - output contactor closed
xx1xH - select speed command 8
xx2xH - not external fault 1
xx4xH - not external fault 2
xx8xH - not external fault 3

x1xxH - not external fault 4
x2xxH - not external fault 5
x4xxH - not external fault 6
x8xxH - not external fault 7
1xxxH - not external fault 8
2xxxH - transfer to drive
4xxxH - transfer to bypass
8xxxH - bypass contactor closed

The second 8 inputs are optional and will not be present on all drives.

Local Discrete Outputs [Local outputs]
Linear number:

261

Minimum value:

0000 Hex

Maximum Value:

FFFF Hex

Analog Output Scaling: N/A
This variable is the value of the 16 local discrete digital outputs. It is bit encoded as shown below:

xxx1H - ready
xxx2H - running
xxx4H - reverse rotation
xxx8H - fault
xx1xH - warning
xx2xH - start fans
xx4xH - close input contactor
xx8xH - close output contactor

x1xxH - close bypass contactor
x2xxH - at speed command
x4xxH

– in torque limit

x8xxH

– in test mode

1xxxH

– synchronous transfer in progress

2xxxH

– start field supply

4xxxH

– enable field supply

8xxxH - reset faults

The second 8 outputs are optional and will not be present on all drives.