Protection And Diagnosis; Alarms - Omron OMNUC FND Series User Manual

Application
4-4

Protection and Diagnosis

4-4-1 Alarms

The Position Driver has the error detection functions shown below. When an error is detected the output
signal ALM (CN1-28) turns OFF and the alarm is displayed.
The following table shows the alarm codes that are displayed on the Position Driver's front panel, and it
provides explanations of each of their meanings.
Display Error detection
A.L01 Overcurrent
A.L02 Overvoltage
A.L03 Voltage drop
A.L06 Resolver
disconnection
A.L07 Power status error
A.L09 Regeneration
Resistor overheat
A.L10 Regeneration
operation error
A.L12 Clock stopped
A.L15 Overcurrent (soft)
A.L16 Speed amp
saturation
A.L17 Motor overload
A.L18 Short time
overload
A.L19 Resolver error
A.L20 Speed over
A.L21 Deviation counter
over
A.L26 Parameter setting
error
A.L32 Resolver error
A.L34 + Software limit
over
A.L35 – Software limit
over
A.L37 Coordinate counter
over
4-10
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Meaning of code and probable cause
function
Overcurrent or overheating detected.
Main circuit's DC voltage exceeded
410 VDC.
Main circuit's DC voltage fell below
200 VDC.
The resolver is disconnected.
The main circuit connections are different
from the settings.
The internal Regeneration Resistor has
overheated (only for FND-X50 ).
The regeneration transistor has been ON for
more than 50 ms (only for FND-X50 ).
The Position Driver's clock is stopped.
The current exceeded the motor's rated
current (120%).
The speed amp was saturated for more than
3 seconds.
The electrothermal value exceeded 110%.
The current exceeded the motor's rated
current (120%) for a sustained period of
time.
There was an error in the resolver feedback. Servo OFF
The motor speed exceeded 120% of the
maximum speed.
The deviation counter's accumulated pulses
exceeded 2
The user parameter settings (UP-01, UP-02)
are not appropriate.
The resolver feedback was in error.
The reference value exceeded the software
limit in the positive direction (PP-10, PP-11).
The reference value exceeded the software
limit in the negative direction (PP-12,
PP-13).
The present value exceeded 2
Teaching or origin teaching was executed
with the parameter setting exceeded.
21
.
31
.
Chapter 4
Motor current
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo-lock
Servo-lock
Servo-lock