Example Of Speed Monitoring Start Operation - Mitsubishi Electric MELSEC Q Series Programming Manual

2 SAFETY OBSERVATION FUNCTION

2.4.3 Example of speed monitoring start operation

Operator
1.Turns ON the start switch
of speed monitoring function.
Operation
for door
opening
9.Opens the door
10.Closes the door.
Operation
for door
closing
Safety door lock can be released only when the power is shut OFF for safety. However,
in case that the door lock needs to be released without power shut-off such as in
maintenance and preparation, speed monitoring function is required so that the device
operate safely.
The operation example of speed monitoring start is shown below.
Safety door
2.Decelerates the command speed to
the safety speed or lower.
3.Turns ON "speed monitoring request
signal".
7.Confirms that the "speed monitoring
enable signal" ON.
8.Releases the door lock.
Safe status (during speed monitoring)
11.Confirms that the door is closed.
12.Locks the door.
13.Turns OFF "Speed monitoring
request signal".
Door lock
User program
2 - 12
Motion CPU and PLC CPU process
4.Checks the parameter.
5.Starts speed monitoring.
6.Turns ON "speed monitoring enable
signal".
14.Ends the speed monitoring.
15.Turns OFF "Speed monitoring
enable signal".