Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 106

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
(8) Timing chart
When the reset switch is
activated, the F+GLOCK
safety output (M1) is turned
on, enabling the F+EDM.
Reset switch (X140)
F+GLOCK safety output (M1)
Start switch (X142)
F+EDM reset input (M3)
Interlocked status (SD1072.0)
Interlock released status (SD1076.0)
CC-Link status (SD1004.0)
Stop switch (X144)
F+GLOCK UnlockRequest input (T0)
Door lock release output (Y103)
Safety switch (X10E)
Contactor output (Y101)
Contactor output check (X10A)
F+EDM Error output (M2)
5
5.6 Case Examples
- 57
5.6.5 Door lock circuit
For details on the safety FBs, F+GLOCK, and F+EDM, refer to the following.
QSCPU Programming Manual (Safety FB)
In this example, the door open/close signal of the safety switch is used as an input
signal. Therefore, this signal (X10E) is connected to the input signal, S_GuardLock
(safety guard locking status), of the F+GLOCK as well.
When using a safety switch whose locking status can be monitored, connect the
locking status signal to S_GuardLock.
If a safety switch that cannot monitor the door open/close signal is used, connect the
locking status signal to the two input signals, S_GuardMon (safety guard interlock
status monitoring) and S_GuardLock, of the G+GLOCK.
In this case, the timer, T1 (timer for waiting the F+GLOCK to be enabled) in the
program above, must be programmed.
Stop switch
activated opened
Reset Start
switch switch
activated activated
When the stop switch is
activated, the contactor output
is turned off. The door interlock
will be released in five seconds
(T0 setting value). (Y103=on)
When the door is closed
and then the reset switch is
activated, the door is
locked. (Y103=off)
When the start switch is
activated, the F+EDM safety
output is turned on and the
contactor output (Y101) turn on.
Figure 5.46 Timing chart
CC
Door Door
remote (1)
closed
error
Reset Start Reset
switch
switch switch
activated
activated activated
The door can be opened only
while the interlock is released.
When an error occurs on the safety
(Y103=on)
remote I/O station on CC-Link Safety,
inputs and outputs of the corresponding
station are turned off. Also, the F+GLOCK
and F+EDM are disabled.
Welding
Stop switch
detected in
activated
the contactor
Reset Start
switch switch
activated activated
The safety remote I/O
station on CC-Link
Safety detects doubling
input discrepancy.