Mr-Dp60 External Digital Display Error - Mitsubishi Electric MR-J2S-CP Instruction Manual

11. TROUBLESHOOTING
Display Name
AL.98 Software limit
warning
AL.9F Battery warning Voltage of battery for
AL.E0 Excessive
regenerative
warning
AL.E1 Overload
warning
AL.E3 Absolute position
counter warning
AL.E6 Servo forced stop
warning
AL.E9 Main circuit off
warning

11.3 MR-DP60 external digital display error

When MR-DP60 external digital display detects an error, the following alarms are displayed. The alarms
are displayed only on the MR-DP60, but not on the servo amplifier display.
Display Name
AL. CPU CPU error
AL. C0 Communication
error
Definition
Software limit set in
parameter is reached.
absolute position
detection system reduced.
There is a possibility that
regenerative power may
exceed permissible
regenerative power of
built-in regenerative
resistor or regenerative
option.
There is a possibility that
overload alarm 1 or 2
may occur.
Absolute position encoder
pulses faulty.
The multi-revolution counter
value of the absolute position
encoder exceeded the
maximum revolution range.
EMG-SG are open.
Servo was switched on
with main circuit power
off.
Definition
CPU error
Communication error
occurred between MR-DP60
and MR-J2S-CP.
Cause
1. Software limit was set within actual
operation range.
2. Point table of position data in excess of
software limit was executed.
3. Software limit was reached during JOG
operation or manual pulse generator
operation.
Battery voltage fell to 3.2V or less.
(Detected with the servo amplifier)
Regenerative power increased to 85% or
more of permissible regenerative power of
built-in regenerative resistor or
regenerative option.
Checking method
Call the status display and check
regenerative load ratio.
Load increased to 85% or more of overload
alarm 1 or 2 occurrence level.
Cause, checking method
Refer to AL.50,51.
1. Noise entered the encoder.
2. Encoder faulty.
3. The movement amount from the home
position exceeded a 32767 rotation or
37268 rotation in succession.
External forced stop was made valid.
(EMG-SG opened.)
Cause
Faulty parts in the MR-D60.
1. CN3 connector disconnected.
2. Wire breakage of the cable.
11 - 10
Action
Set parameter No. 48 to 51
correctly.
Set point table correctly.
Perform operation within
software limit range.
Change the battery.
1. Reduce frequency of
positioning.
2. Change regenerative option
for the one with larger
capacity.
3. Reduce load.
Refer to AL.50, AL.51.
Take noise suppression
measures.
Change servo motor.
Make home position setting
again.
Ensure safety and deactivate
forced stop.
Switch on main circuit power.
Action
Exchange the MR-D60.
Connect correctly.
Repair or exchange the cable.