2.4 Driver Unit/Simple Absolute Unit Alarm Causes and Countermeasures
C2-19
ME0384-4A
Chapter 2 Troubleshooting
Alarm name Causes/countermeasures
P
Driver
limited
Cause: Collision of the actuator was detected.
Countermeasure: Remove the cause of the collision.
For an unexpected detection, readjust the collision
detection function. [Refer to Startup Section Chapter
6, 6.2 Various Functions/Collision detection function
P, A
Driver
detection 1
Cause: The present position changed while reading or saving absolute
data.
Countermeasures: Do not apply vibration to the actuator.
0EE
P, A
Driver
limited
Absolute encoder error
detection 2
Cause: The encoder cannot detect position information normally with
battery-less absolute specification or simple absolute
specification.
1) The first time power is turned ON after replacing the motor
with battery-less absolute specification, or with simplified
absolute specification. (Before executing absolute reset)
2) Absolute battery voltage drop. (Simple absolute
specification) (When the detail code in the teaching tool
alarm list is 0001H)
3) Disconnection of the actuator connection cable, actuator
side attached cable, connector connection failure, or cable
insertion/removal. (Detail code 0002H)
4) Driver unit parameters have been changed.
Countermeasure: 2) After supplying power for 72 hours or more,
charge the battery, then perform absolute reset.
If it seems to occur frequently even when
sufficiently charged, the battery life may be the
problem. Replace the battery.
Refer to "Specifications Section Chapter 5, 5.4
General Specifications [How to Replace Absolute
Battery]" for how to make replacement.
For (1), (3), and (4), perform absolute reset.
[Refer to Startup Section Chapter 3 Absolute Reset]
P, A
Driver
limited
detection 3
Cause: The encoder cannot detect position information normally with
simple absolute specification. (Encoder overspeed error)
The present position changed at a speed higher than the
rotation speed setting due to an external factor at power cutoff.
Countermeasure: Set the rotation speed setting so that it supports
higher rotation speeds than the current rotation
speed setting. If it occurs again, absolute reset is
required.
[Refer to Startup Section Chapter 3 Absolute Reset]
0F5
P, A, D
Driver
limited
Non-volatile memory write
verify error
Cause: When data is written to the non-volatile memory, comparison
(verification) is performed to confirm whether the data in the
memory matches the write data. At this time, a mismatch was
detected. (Failure of non-volatile memory)
Countermeasure: Contact IAI if this reoccurs even after turning ON the
[Refer to teaching tool instruction manual]
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