Outline Of Stopping - Mitsubishi Electric MELSEC-Q QD75M User Manual

1 PRODUCT OUTLINE

1.2.3 Outline of stopping

Stop cause
Servo READY
OFF
• Servo amplifier
power supply
Forced stop OFF
• Servo alarm
• Emergency
stop to the
servo amplifier
Hardware
stroke limit
Fatal stop
upper/lower
(Stop group 1)
limit error
occurrence
Error occurs
in PLC CPU
Emergency
PLC READY
stop
signal OFF
(Stop group 2)
Error in test
mode
Axis error
detection
(Error other
than stop
Relatively safe
group 1 or 2)
stop
(Stop group 3) "Stop signal"
from
peripheral
device
"Stop signal"
ON from
external
device
Intentional stop
(Stop group 3) "Axis stop
signal" ON
from PLC
CPU
Each control is stopped in the following cases.
(1) When each control is completed normally.
(2) When the Servo READY signal is turned OFF.
(3) When a PLC CPU error occurs.
(4) When the PLC READY signal is turned OFF.
(5) When an error occurs in the QD75.
(6) When control is intentionally stopped (Stop signal from PLC CPU turned ON, stop
signal from an external device, etc.).
The outline for the stopping process in these cases is shown below. (Excluding (1) for
normal stopping.)
Axis
operation
M code
status
Stop
ON signal
after
axis
after stop
stopping
( Md.26
Each No During
axis change error
Each No During
axis change error
No
change
All Turns During
axes OFF error
No
change
Each No During
axis change error
When
Each No stopped
axis change
(While
waiting)
OPR control
Major
Machine Fast
positioning
OPR OPR
control
control control
)
Servo OFF or free run
(The operation stops with dynamic brake or
electromagnetic brake.)
Deceleration stop/sudden stop
(Select with " Pr.37
sudden stop selection" )
Deceleration stop/sudden stop
(Select with " Pr.38
sudden stop selection" )
Deceleration stop/sudden stop
(Select with " Pr.39 Sudden stop group3
sudden stop selection" )
1 - 26
MELSEC-Q
Stop process
Manual control
High-level
JOG/
positioning
Inching
control
operation
Sudden stop group1
Sudden stop group2
Manual
pulse
generator
operation
Deceleration
stop
Deceleration
stop
Deceleration
stop