Rockwell Automation Liqui-Flo DBT Reach Drive User Manual
Page 191
Troubleshooting
4-11
HW
OverCurrent
12
➀
The drive output current has
exceeded the hardware
current limit.
Check programming. Check for
excess load, improper DC
boost setting, DC brake volts
set too high or other causes of
excess current.
I/O Comm
Loss
121
➁
I/O Board lost communication
with the Main Control Board.
1.
Check connector.
2.
Check for induced noise.
3.
Replace I/O board of Main
Control Board.
I/O Failure
122
I/O was detected, but failed
the powerup sequence.
Replace Main Control Board.
I/O Board
Mismatch
120
Incorrect I/O board identified.
Restore I/O board to original
configuration, or If new
configuration is desired, reset
fault.
Incompat
MCB-PB
106
➁
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 exceed
a preset level.
Checking incoming power for a
missing phase/blown fuse.
IR Volts
Range
77
The drive autotuning default is
Calculate, and the value
calculated 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 (41).
1.
Check for proper motor
sizing.
2.
Check for correct
programming of Motor NP
Volts (41).
3.
Additional output
impedance may be
required.
Load Loss
15
Drive output torque current is
below Load Loss Level for a
time greater than Load Loss
Time.
1.
Verify connections between
motor and load.
2.
Verify level and time
requirements.
Motor
Overload
7
➀
➂
Internal electronic overload
trip.
Enable/disable with Fault
Config 1 (238).
An excessive motor load exists.
Reduce load so drive output
current does not exceed the
current set by Motor NP FLA
(42).
Motor
Thermistor
16
Thermistor output is out of
range.
1.
Verify that thermistor is
connected.
2.
Motor is overheated.
Reduce load.
Table 4.5 – Fault Descriptions and Corrective Actions (Continued)
Fault
No.
Ty
p
e
Description
Action