Control Techniques Unidrive SP Guide Abrégé page 51

Safety Product Mechanical
Information Information Installation
Trip
OIAC.P Power module over current detected from the module output currents
Acceleration /deceleration rate is too short.
If seen during autotune reduce voltage boost Pr 5.15
Check for short circuit on output cabling
Check integrity of motor insulation
Check feedback device wiring
Check feedback device mechanical coupling
104 Check feedback signals are free from noise
Is motor cable length within limits for that frame size?
Reduce the values in speed loop gain parameters – Pr 3.10, Pr 3.11 and Pr 3.12 (closed
loop vector and servo modes only)
Has offset measurement test been completed? (servo mode only)
Reduce the values in current loop gain parameters - Pr 4.13 and Pr 4.14 (closed loop vector and
servo modes only)
Braking transistor over-current detected: short circuit protection for the braking transistor
OI.br
activated
Check braking resistor wiring
4 Check braking resistor value is greater than or equal to the minimum resistance value
Check braking resistor insulation
OIbr.P Power module braking IGBT over current
Check braking resistor wiring
103 Check braking resistor value is greater than or equal to the minimum resistance value
Check braking resistor insulation
OIdC.P Power module over current detected from IGBT on state voltage monitoring
Vce IGBT protection activated.
109
Check motor and cable insulation.
Digital output overload: total current drawn from 24V supply and digital outputs exceeds
O.Ld1
200mA
26 Check total load on digital outputs (terminals 24,25,26)and +24V rail (terminal 22)
O.SPd Motor speed has exceeded the over speed threshold
Increase the over speed trip threshold in Pr 3.08 (closed loop modes only)
7 Speed has exceeded 1.2 x Pr 1.06 or Pr 1.07 (open loop mode)
Reduce the speed loop P gain (Pr 3.10) to reduce the speed overshoot (closed loop modes only)
DC bus voltage has exceeded the peak level or the maximum continuous level for 15
OV
seconds
Increase deceleration ramp (Pr 0.04)
Decrease braking resistor value (staying above the minimum value)
Check nominal AC supply level
Check for supply disturbances which could cause the DC bus to rise – voltage overshoot after
supply recovery from a notch induced by DC drives.
Check motor insulation
2
Drive voltage rating
200
400
575
690
If the drive is operating in low voltage DC mode the overvoltage trip level is 1.45 x Pr 6.46.
Unidrive SP Short Form Guide
Issue Number: 2
Electrical Getting
Menu 0
Installation Started
Peak voltage
415
830
990
1190
www.controltechniques.com
Running Advanced
Diagnostics
the motor parameters
Diagnosis
Maximum continuous voltage level (15s)
1175
UL Listing
Appendix
Information
410
815
970
51