Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 320)

320 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 6 Troubleshooting
171 Adj Vltg Ref Alarm 1 Invalid adjustable voltage reference selection conflict.
175 Travel Lim Cflct Non-Reset
Fault Current
Limit
Stop Travel limits are in conflict. Both the forward and reverse travel limits
indicate they are simultaneously active.
If digital limits (hardware signals) are in use, ensure that the following
forward and reverse digital input pairs are not both off at the same time:
fwd/rev decel travel limit digital inputs and fwd/rev end stop travel limit
digital inputs. The travel limit digital inputs are meant to be connected
to normally closed switch contacts, so the digital input status will read
an off (0 = False) bit status when the machine is on limit and the switch
contact opens. A possible cause for this condition is loss of common
power to both the forward and reverse travel limit switches.
If software travel limits are in use, check the state of the fwd/rev travel
limit bits in P1101 [Trq Prove Setup]. These bits will read an on (1 =
Enabled) bit status when the machine is on limit. Bit 2 “Decel Fwd” and
Bit 4 “Decel Rev” should not be on at the same time. Similarly, Bit 3 “End
Stop Fwd” and Bit 5 “End Stop Rev” should not be on at the same time.
177 Profiling Active Alarm 1 The Profile/Indexer is active.
178 Homing Active Alarm 1 The Homing function is active.
179 Home Not Set Alarm 1 The Home position was not set before profile operation.
181 Fwd End Limit Resettable
Fault Current
Limit
Stop The selected digital input for one of the end limit switches, P196 [DI Fwd
End Limit] or P198 [DI Rev End Limit], has detected a falling edge and
P313 [Actv SpTqPs Mode] is not set to 1 “Speed Reg.”
If digital limits (hardware signals) are in use, ensure that the digital
inputs are connected to normally closed contacts. When the end limit is
reached the contacts open.
182 Rev End Limit Resettable
Fault Current
Limit
Stop The selected digital input for one of the end limit switches, P196 [DI Fwd
End Limit] or P198 [DI Rev End Limit], has detected a falling edge and
P313 [Actv SpTqPs Mode] is not set to 1 “Speed Reg.”
If digital limits (hardware signals) are in use, ensure that the digital
inputs are connected to normally closed contacts. When the end limit is
reached the contacts open.
185 Freq Conflict Alarm 2 Indicates that the values of P520 [Max Fwd Speed] and P521 [Max Rev
Speed] are in conflict with the value of P63 [Break Frequency].
186 VHz Neg Slope Alarm 2 Indicates that the V/Hz curve segment resulted in a negative V/Hz slope.
See P60 [Start Acc Boost] through P63 [Break Frequency].
187 VHz Boost Limit Alarm 2 Indication that one of the two following conditions exists.
• P60 [Start/Acc Boost] and P61 [Run Boost] are greater than P25
[Motor NP Volts] x 0.25 when P65 [VHz Curve] = 0 “Custom V/Hz.”
• P61 [Run Boost] is greater than P25 [Motor NP Volts] x 0.25 when
P65 [VHz Curve] = 1 “Fan/Pump.”
190 PM FV Pri Fdbk Alarm 2 Indicates a control mode and primary feedback device configuration
error. P35 [Motor Ctrl Mode] is set to the permanent magnet flux vector
“PM FV” control mode, P125 [Pri Vel Fdbk Sel] is set to P137 [Open Loop
Fdbk] (port 0).
191 PM FV Alt Fdbk Alarm 2 Indicates a control mode and alternate feedback device configuration
error. P35 [Motor Ctrl Mode] is set to the permanent magnet flux vector
“PM FV” control mode, P635 [Spd Options Ctrl] is set to bit 7 “Auto Tach
SW,” P128 [Alt Vel Fdbk Sel] is set to P137 [Open Loop Fdbk] (port 0).
192 Fwd Spd Lim Cfg Alarm 2 The forward speed reference is out of range.
Verify the settings of P38 [PWM Frequency] and P520 [Max Fwd Speed].
Lower carrier frequencies reduce the output frequency range.
Verify that P522 [Min Fwd Speed] is less than or equal to P520 [Max Fwd
Speed].
193 Rev Spd Lim Cfg Alarm 2 The reverse speed reference is out of range.
Verify the settings of P38 [PWM Frequency] and P521 [Max Rev Speed].
Lower carrier frequencies reduce the output frequency range.
Verify that P523 [Min Rev Speed] is greater than or equal to P521 [Max
Rev Speed].
Event
No. Fault/Alarm Text Type Fault
Action Configuration
Parameter Auto
Reset Description/Action(s)