Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 157)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 157
Drive Port 0 Parameters Chapter 3
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Drive Status 1 Bit Descriptions
Bit 0 “Ready” – Condition is true if there are no start inhibits indicated by P933 [Start Inhibits].
Bit 1 “Active” – Condition is true if drive is modulating.
Bit 2 “Command Dir” – 1 = Commanded direction is forward. 0 = Commanded direction is reverse.
Bit 3 “Actual Dir” – 1 = Actual direction is forward. 0 = Actual direction is reverse.
Bit 4 “Accelerating” – For flux vector and non-vector control modes, this bit indicates when the actual motor speed is increasing due to change in
speed reference. When accelerating, the motor speed is moving away from zero in either the positive (forward) or negative (reverse) direction. In
adjustable voltage control mode, accelerating relates to an increasing output voltage and frequency. The “accelerating” bit will become clear when
any of the following conditions occur: drive inactive (Bit 1 “Active” status clear) or when “At Speed” (Bit 8 status set) or “AtZero Speed” (Bit 24 set)
or “DC Braking” (Bit 19 set) or when the drive is operating as a torque regulator (Bit 23 without Bits 21 and 22).
Bit 5 “Decelerating” – This bit compliments the Accelerating status Bit 4 for the condition where the motor speed is decreasing due to a change in
speed reference. When decelerating, the motor speed is moving toward zero in either the positive (forward) or negative (reverse) direction. In
adjustable voltage control mode, decelerating relates to a decreasing output voltage and frequency. The conditions that will clear this bit are the
same as those that apply to the Accelerating status bit.
Bit 6 “Alarm” –
Bit 7 “Faulted” –
Bit 8 “At Speed” – This bit will become set when the actual motor speed has reached the speed reference value. This condition is determined by
comparing P131 [Active Vel Fdbk] against P597 [Final Speed Ref]. “At Speed” occurs when the difference between speed reference and feedback is
within 1 percent of motor nameplate speed. In adjustable voltage control mode, the “At Speed” condition will indicate when the output voltage
and frequency have completed their ramps and are no longer changing. The “At Speed” bit will become clear when any of the following conditions
occur: drive inactive (Bit 1 “Active” status clear) or when accelerating (Bit 4 set) or when decelerating (Bit 5 set).
Bit 9 “Manual” –
Bit 10 “SpdRef Bit 0” –
Bit 11 “SpdRef Bit 1” –
Bit 12 “SpdRef Bit 2” –
Bit 13 “SpdRef Bit 3” –
Bit 14 “SpdRef Bit 4” –
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