Description of Warning Codes
‑28‑
The estimated temperature of the regenerative transistor is higher than H0A.18
(IGBT overtemperature threshold).
Cause
Confirming Method
Solution
1. The junction temperature
of the braking is too high.
2. The regenerative
transistor will be turned off
automatically after overload
occurs.
The regenerative transistor
temperature exceeds the
threshold defined by H0A.49.
Control the working
conditions and usage of the
regenerative transistor.
● E941.0: Parameter modifications activated at next power‑on
Cause:
The parameters modified are those whose "Effective time" is "Next power‑on".
Cause
Confirming Method
Solution
The parameters modified
are those whose "Effective
time" is "Next power‑on".
Check whether parameters
you modified are those
whose "Effective Time" is
"Next power‑on".
Power off and on the servo
drive again.
● E942.0: Parameter saved frequently
Cause:
The number of parameters modified at a time exceeds 200.
Cause
Confirming Method
Solution
Too many parameters are
modified and saved to
EEPROM (H0C.13 = 1) at a
brief interval.
Check whether parameters
are modified through the
host controller at a brief
interval.
Check the operation mode.
For parameters that need
not be saved to e2prom, set
H0C.13 to 0.
● E950.0: Forward overtravel warning
Cause:
The logic of the DI terminal allocated with DI function 14 (FunIN.14: P‑OT, positive
limit switch) is effective.
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