Rockwell Automation 284 ArmorStart User Manual - Manual (Page 306)

14-12 Troubleshooting
Table 14.12 Motor and/or Drive Will Not Accelerate to Commanded Speed
Table 14.13 Motor Operation is Unstable
Table 14.14 Drive Will Not Reverse Motor Direction
Table 14.15 Drive Does Not Power Up
Cause(s) Indication Corrective Action
Acceleration time is
excessive. None Reprogram Parameter 139 (Accel Time 1) or Parameter
167 (Accel Time 2).
Excess load or short
acceleration times
force the drive into
current limit,
slowing, or stopping
acceleration. None • Compare Parameter 103 (Output Current) with
Parameter 189 (Current Limit1).
• Remove excess load or reprogram Parameter 139
(Accel Time 1) or Parameter 167
(Accel Time 2).
• Check for improper setting of Parameter 184 (Boost
Select).
Speed command
source or value is not
as expected. None • Verify Parameter 102 (Commanded Freq).
• Check Parameter 112 (Control Source) for the proper
Speed Command.
Programming is
preventing the drive
output from
exceeding limiting
values. None Check Parameter 135 (Maximum Freq) to insure that
speed is not limited by programming.
Torque performance
does not match
motor
characteristics. None • Set motor nameplate full load amps in Parameter
226 (Motor NP FLA).
• Use Parameter 227 (Autotune) to perform Static
Tune or Rotate Tune procedure.
• Set Parameter 225 (Torque Perf Mode) to
option 0V/Hz.
Cause(s) Indication Corrective Action
Motor data
was
incorrectly
entered. None 1. Correctly enter motor nameplate data into Parameters 131,
132, and 133.
2. Enable Parameter 197 (Compensation).
3. Use Parameter 184 (Boost Select) to reduce boost level.
Cause(s) Indication Corrective Action
Digital input is not selected for
reversing control. None Check (Digital Inx Sel). Choose correct input and
program for reversing mode.
Motor wiring is improperly
phased for reverse. None Switch two motor leads.
Reverse is disabled. None Check Parameter 195 (Reverse Disable).
Cause(s) Indication Corrective Action
No input power to drive. None Check the power circuit.
• Check the supply voltage.
• Check all fuses and disconnects.
Jumper between I/O Terminals P2
and P1 not installed and/or DC
Bus Inductor not connected. None Install jumper or connect DC Bus Inductor.