Allen-Bradley PowerFlex 70 User Manual

80 Rockwell Automation Publication 20A-UM001N-EN-P - July 2013
Chapter 2 Troubleshooting
Fatal Faults 900…
930
2 Diagnostic code indicating a drive malfunction. 1. Cycle power.
2. Replace Main Control Board.
3. Contact Tech Support.
Flt QueueCleared 51 No fault displayed. Used as a marker in the Fault Queue indicating that the clear queue
function was performed.
FluxAmpsRef Rang 78 The value for flux amps determined by the
Autotune procedure exceeds the programmed
[Motor NP FLA].
1. Reprogram [Motor NP FLA]
with the correct motor
nameplate value.
2. Repeat Autotune.
Ground Fault 13 1 A current path to earth ground greater than 25%
of drive rating.
Check the motor and external
wiring to the drive output
terminals for a grounded
condition.
Heatsink LowTemp 10 1 Annunciates a too low temperature case or an
open NTC (heatsink temperature sensing device)
circuit.
1. Verify ambient temperature.
2. In cold ambient temperatures,
add space heaters.
3. Check connections to NTC.
Heatsink OvrTemp 8 1 Heatsink temperature exceeds 100% of [Drive
Temp] .
1. Verify that maximum ambient
temperature has not been
exceeded.
2. Check fan.
3. Check for excess load.
HW OverCurrent 12 1 The drive output current has exceeded the
hardware current limit.
1. Check output of drive or motor
for shorts.
2. Check programming.
3. Check for excess load, improper
DC boost setting, DC brake volts
set too high or other causes of
excess current.
Incompat MCB-PB 106 2 Drive rating information stored on the power
board is incompatible with the main control
board.
Load compatible version files into
drive.
Input Phase Loss 17 The DC bus ripple has exceeded a preset level. Check incoming power for a
missing phase/blown fuse.
IR Volts Range 77 “Calculate” is the autotune default and the value
determined by the autotune procedure for IR
Drop Volts is not in the range of acceptable
values.
Re-enter motor nameplate data.
IXo VoltageRange 87 Voltage calculated for motor inductive
impedance exceeds 25% of [Motor NP Volts].
1. Check for proper motor sizing.
2. Check for correct programming
of [Motor NP Volts], parameter
41.
3. Additional output impedance
can be required.
Load Loss 15 Drive output torque current is below [Load Loss
Level] for a time period greater than [Load Loss
time].
1. Verify connections between
motor and load.
2. Verify level and time
requirements.
Motor OverLoad 7 1
3
Internal electronic overload trip.
Enable/Disable with [Fault Config 1] on page 58
.
An excessive motor load exists.
Reduce load so drive output
current does not exceed the current
set by [Motor NP FLA]. If enabled,
check level of flux braking in
parameter P549 [Flux Braking %].
Motor Thermistor 16 Thermistor output is out of range. 1. Verify that thermistor is
connected.
2. Motor is overheated. Reduce
load.
Output PhaseLoss 21 Current in one or more phases has been lost or
remains below a preset level.
Check the drive and motor wiring.
Check for phase-to-phase
continuity at the motor terminals.
Check for disconnected motor
leads.
Table 1 - Fault Types, Descriptions and Actions (Continued)
Fault No.
Type
(1)
Description Action
E C v2
E C v2
E C v2
E C v2
E C

Allen-Bradley PowerFlex 70 Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 70
Category	Controller
Language	English