Mitsubishi Electric MELSEC iQ-R Series - Page 121

5 SAFETY APPLICATION CONFIGURATION EXAMPLES
5.1 System Configured by a Safety CPU
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In this example, the door open/close signal of the safety switch is used as an input signal. Therefore, this signal (SA\X0) is
connected to the input signal, i_bS_GuardLock (Status of the mechanical guard locking), of M+SF_GLOCK_R as well. When
using a safety switch whose locking status can be monitored, connect the locking status signal to i_bS_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 of
M+SF_GLOCK_R, i_bS_GuardMon (Monitor of the guard interlocking) and i_bS_GuardLock. In this case, the timer, SAT1
(timer for waiting for M+SF_GLOCK to be enabled) in the program in the previous page, must be programmed.
■Timing chart
Reset switch (reset_in)
M+SF_EDM_R reset input (SA\M3)
Safety refresh communication status
(SA\SD1008.0)
Safety switch (SA\X0)
M+SF_GLOCK_R safety output
(SA\M1)
Start switch (start_in)
Interlock status (SA\SD1232.0)
Interlock release request
(SA\SD1240.0)
Stop switch (stop_in)
Contactor output (SA\Y0)
Contactor output check (SA\X2)
CCIEF
remote (1)
error
M+SF_EDM_R Error output (SA\M2)
Reset
switch
pressed
Start
switch
pressed
Start
switch
pressed
When the reset switch is pressed,
the M+SF_GLOCK_R safety output
(SA\M1) is turned on, enabling the
M+SF_EDM_R.
When the stop switch is
pressed, the contactor output
is turned off. The guard
interlock will be released in
five seconds (SA\T0 setting
value). (SA\Y3=on)
Reset
switch
pressed
Reset
switch
pressed
Start
switch
pressed
Start
switch
pressed
Start
switch
pressed
Start
switch
pressed
Reset
switch
pressed
M+SF_GLOCK_R UnlockRequest
input (SA\T0)
Guard lock release output (SA\Y3)
When the guard is closed
and then the reset switch
is pressed, the guard is
locked. (SA\Y3=off)
The guard can be opened only
while the interlock is released.
(SA\Y3=on)
When the start switch is pressed,
the M+SF_EDM_R safety output
is turned on and the contactor
output (SA\Y0) turn on.
When an error occurs in a safety
remote I/O module, inputs and
outputs of the safety remote I/O
module are turned off.
Also, the M+SF_GLOCK_R and
M+SF_EDM_R are disabled.
A safety remote I/O
module detects a
double input
discrepancy.
Stop
switch
pressed
Welding
detected in
the contactor 1
Guard
opened
Guard
closed
Stop
switch
pressed