Parameter Descriptions
12-53
Selects the method for control of drive direction.
0 = Unipolar: The drive receives an unsigned reference signal and
a separate direction command from a logic source such as a digital
input or DPI port device.
Example: Analog speed reference = 0 to 100%
Direction control:
• OIM Forward/Reverse key
• Terminal block
1 = Bipolar: The drive receives a signed reference (-100% to
+100%). In this case, the Forward/Reverse key has no effect.
2 = Reverse Dis: The drive receives a signed reference (-100% to
+100%); however, regardless of the reference, the drive is not
permitted to reverse.
Note: Internal reference scaling provides 100% = 32767 internal
units.
190 Direction Mode
Range: 0 = Unipolar
1 = Bipolar
2 = Reverse Dis
Default: 0 = Unipolar
Access: 0 Path: Utility>Direction Config
See also: 91, 92, 320 - 327, 361 - 366
!
ATTENTION: Setting parameter 190 to 0 or 1 may
cause unwanted motor direction. Verify driven
machinery cannot be damaged by reverse rotation
before changing the setting of this parameter to 0 or
1. Failure to observe this precaution could result in
damage to, or destruction of, equipment.
Parameter 190
Selection Analog Reference Direction Control
0 = Unipolar 0 to 100% Logic
1 = Bipolar -100% to +100% Reference polarity
2 = Reverse Disable -100% to +100% Reverse disabled
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