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
Encoder Reverse [Encoder reverse]
Linear number:
239
Minimum value:
0
Maximum value:
1
Default value:
0
This parameter specifies the direction of rotation of an absolute position encoder. If the parameter is set to 1, the
drive firmware reverses the output of the encoder. The encoder rotation should
be reversed if a “Tach rotation”
warning occurs and cannot be cleared when the drive is running (the warning can always be cleared when the
drive is stopped). This parameter is not used for induction motors with incremental encoders.
Warning:
Parameter “Speed Feedback Select” should not be set to 1 until the encoder direction has been correctly set.
This parameter was added in Rev 5.20 and is not present in 4.xx.
17 Control Mask Parameters
The parameters in this group specify which adapters are allowed to control the various drive functions. All the
parameters in this group are bit encoded as shown below:
xxx1H - adapter 0
xxx2H - adapter 1
xxx4H - adapter 2
xxx8H - adapter 3
xx1xH - adapter 4
xx2xH - adapter 5
xx4xH - adapter 6
xx8xH - adapter 7
Setting a bit enables the function for the corresponding adapter. Clearing a bit disables the function for the
corresponding adapter. There is no mask for the stop function because it is enabled for all connected adapters
at all times. The control mask parameters are not saved and are set to their default value at power up.
Logic Mask [Logic mask]
Linear number:
241
Minimum value:
00 Hex
Maximum value:
FF Hex
Default value:
FF Hex
This parameter specifies which adapters can issue commands to the drive.
Local Mask [Local mask]
Linear number:
242
Minimum value:
00 Hex
Maximum value:
FF Hex
Default value:
FF Hex
This parameter specifies which adapters can take exclusive local control of the drive.
Start Mask [Start mask]
Linear number:
243
Minimum value:
00 Hex
Maximum value:
FF Hex
Default value:
FF Hex
This parameter specifies which adapters can issue start commands.