Mitsubishi Electric MELDAS 60 Series Parameter Manual page 49

1.7 Messages During Emergency Stop
EMG EMERGENCY ∗∗∗∗
Error No.
The user PLC has entered the emergency
PLC
stop state during the sequence process.
The emergency stop input signal is
EXIN
significant (open).
An alarm occurred in the servo system
SRV
causing an emergency stop.
The user PLC (ladder sequence) is not
STOP
running.
Spindle amplifier not mounted
SPIN
The spindle amplifier is not mounted.
High-speed PC processing abnormal
PC_H
Setting of the door open II fixed device is
PARA
illegal.
The dog signal random assignment
parameter setting is illegal.
If the FROM/TO instruction is not executed
LINK
within 500 ms, an emergency stop occurs.
1. List of Alarms
1.7 Messages During Emergency Stop
Error items
Refer to the explanations for details.
Details
I - 35
Remedy
• Investigate and remove the cause of the
user PLC emergency stop.
• Cancel the emergency stop input signal.
• Check the wiring to see if any wiring is
broken.
• Investigate and remove the cause of the
servo alarm.
• Check if the rotary switch CS2 on the top of
the controller front panel is set to 1.
• Check if the PLC edit file save screen
(onboard function) [4RUN/SP] (run/stop)
switch is turned ON.
• Cancel the causes of the other emergency
stop.
• Check emergency stop signal input in the
spindle amplifier.
• Check the sequence program.
(To stop monitoring the high-speed PC
processing temporarily, set 1 in #1219
aux03 bit1. Disable the monitoring function
only as a temporary measure.)
• Specify the #1155 DOOR_m and #1156
DOOR_s parameters correctly.
(When the door open II fixed device is not
used, set #1155 DOOR_m and #1156
DOOR_s to 100.)
• Correctly set the #2073 zrn_dog, #2074
H/W_OT+, #2075 H/W_OT-and #1226 aux
10 bit 5 parameters.
• Try to execute the FROM or TO instruction
one or more times every 500 ms.
* Measure the time in which no interrupt
request is issued from MELSEC and store
the result in the R register.
R1880: Current time-out counter
R1881: Counter for maximum time-out
after power-on
R1882: Counter for maximum time-out
after system start-up (backed up)