5-3
Error Messages
The following table lists robot error messages.
Additional Information
Other system messages may be present. Use the ACE Software to check for these messages.
If errors persist, contact your local OMRON representative.
Error Message
Explanation
Corrective Action
24
24 VDC power fault.
The 24 VDC input voltage is out of
range.
Check connections and voltage level from the
user-supplied 24 VDC power supply.
A#
Amplifier fault where # represents the
associated joint number.
Check user motor power connections for shorts
or opens.
Turn High Power back on and restart the pro-
gram.
AC
AC power fault.
Check connections and voltage level from the
user-supplied AC power supply.
B#
IO Blox communication error where #
represents the associated IO Blox unit.
Check IO Blox connections for shorts or opens.
Check IO Blox address switches for proper con-
figuration.
Cycle power to the control system.
BA
The encoder backup battery voltage is
low.
Replace the backup encoder batteries.
D#
Duty cycle exceeded where # repre-
sents the associated joint number.
Reduce the speed or acceleration for the motion
that was in progress when the error occurred.
E#
Encoder fault where # represents the
associated joint number.
Use the ACE Software to get the failure mes-
sage for more information.
ES
Emergency stop detected by the robot.
Check safety devices connected to the robot for
an emergency stop condition.
FM
Firmware mismatch.
Contact your local OMRON representative.
h#
Amplifier high temperature where #
represents the associated joint num-
ber.
Try slowing the motion or insert pauses.
Check for excessive ambient temperature, inad-
equate ventilation, and proper function of any
cooling fans.
H#
Encoder high temperature where #
represents the associated joint num-
ber.
Reduce robot speed, acceleration or decelera-
tion, or introduce delays in the application cycle
to reduce heat accumulation.
hV
High DC bus voltage fault.
The high DC bus voltage is out of
range.
This can be cause when AC power is abruptly
removed. Check AC connections.
I#
Initialization state where # represents
the step number.
If this code persists longer than 30 seconds, an
initialization failure has occurred. Contact your
local OMRON representative for support.
M#
Motor stalled where # represents the
associated joint number.
Check for obstacles and free movement of all
joints.
NV
Non-volatile memory fault.
Contact your local OMRON representative for
support.
P#
Power system fault where # represents
the code number.
Contact your local OMRON representative for
support.
5 Troubleshooting
5-4
i4H Robots User's Manual (I660)
Summary of Contents for i4-650H
Page 1: ...i4H Robots User s Manual i4 650H i4 750H i4 850H I660 E 02...
Page 6: ...Manual Information 4 i4H Robots User s Manual I660...
Page 74: ...2 Specifications 2 20 i4H Robots User s Manual I660...
Page 142: ...5 Troubleshooting 5 6 i4H Robots User s Manual I660...
Page 176: ...Appendix A 16 i4H Robots User s Manual I660...
Page 177: ...I Index I 1 i4H Robots User s Manual I660 I...
Page 180: ...Index I 4 i4H Robots User s Manual I660...
Page 181: ......
