Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 124

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
(6) Timing chart
When the reset switch is
activated, the F+MUTES
safety output (M1) is turned
on, enabling the F+EDM.
switch
activated
Reset switch (X120)
F+MUTES safety output (M1)
Start switch (X121)
F+EDM reset input (M3)
Interlocked status (SD1072.0)
Interlock released status
(SD1076.0)
CC-Link status (SD1004.0)
Light curtain (X104)
Muting start enable signal
(X123)
F+MUTES MutingEnable input
(M5)
Muting sensor1 (X12C)
Muting sensor2 (X12D)
Muting sensor3 (X12E)
Muting sensor4 (X12F)
Muting lamp (Y100)
Contactor output (Y101)
Contactor output check (X10A)
F+EDM Error output (M2)
5
5.6 Case Examples
- 75
5.6.7 Sequential muting
For details on the safety FBs, F+MUTES, and F+EDM, refer to the following.
QSCPU Programming Manual (Safety FB)
In this example, an error occurs on the safety remote I/O station on CC-Link Safety
when a disconnection occurs in the muting lamp wiring.
To avoid an error in the safety remote I/O station on CC-Link Safety due to this kind of
error, perform the following:
• Set "1: Not execute" for "Output dark test selection" for the output where the
muting clamp is connected.
• Use a muting lamp that can output its status (turns on at normal and turns off if an
error occurs).
• Connect a state output signal to the input of the safety FB, S_MutingLamp.
This is an example for performing sequential muting with four muting sensors. To
perform parallel muting, use F+MUTE2 or F+MUTEP instead of F+MUTES.
Entry Exit
detected confirmed
Reset Start
Reset
switch
switch switch
activated
activated activated
When the light of the light
curtain is blocked, the
F+MUTES safety output
(M1) is turned off,
disabling the F+EDM.
When the start switch is
activated, the F+EDM safety
output is turned on and the
contactor output (Y202) turns on.
Figure 5.61 Timing chart
Muting Muting
started completed
Start
The contactor output remains on even
though the light of the light curtain is
blocked only when four muting sensors
detect the workpiece in the correct
sequence.
When an error occurs on the safety remote
I/O station on CC-Link Safety, inputs and
outputs of the corresponding station are
turned off. Also, the F+MUTES and F+EDM
are disabled.
CC
Entry
remote (1)
detected
error
Reset Reset Start
switch switch switch
activated activated activated
The safety remote I/O station
on CC-Link Safety detects
doubling input discrepancy.
Contact welding
detected in
the contactor 1