Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference page 37

FB details
This FB is a safety-related FB for monitoring ESPE. The function is identical to S+ESTOP. o_bS_ESPE_Out output signal is
set to OFF as soon as i_bS_ESPE_In input is set to OFF. o_bS_ESPE_Out output signal is set to ON only if i_bS_ESPE_In
input is set to ON and a reset occurs. If the automatic reset is selected for i_bS_StartReset and i_bS_AutoReset, reset is not
required.
WARNING
• The enable signal (o_bS_ESPE_Out) may only control the process directly if this does not adversely affect the safety function. In this regard, validate the
entire path of the safety function, including the startup behavior of the process to be controlled.
• The ESPE must be selected in respect of the product standards IEC 61496-1, -2 and -3 and ISO13849-1.
State diagram
State transition of M+SF_ESPE_R
i_bActivate=OFF
Idle
0000H
0
init
8001H
3
1
Wait for
S_ESPE_In 1
8002H
1
i_bS_ESPE_In
=ON
2
Wait for
Reset 1
8003H
3
Note: The transition from any state to the Idle state due to i_bActivate=OFF is not shown. However these transitions have the highest priority (0).
1
i_bActivate=ON
2
i_bS_StartReset=OFF
Reset Error 1
C001H
1
1
i_bS_ESPE_In=ON
AND
i_bS_AutoReset=ON
(R_TRIG
at i_bReset)=ON
Safety Output
enabled
8000H
1
i_bS_StartReset=ON AND
i_bS_ESPE_In=OFF
Wait for
S_ESPE_In 2
8004H
2
1
i_bReset
=OFF
2
Wait for
Reset 2
8005H
1
3
(R_TRIG at i_bReset)=ON
OR i_bS_AutoReset=ON
i_bS_ESPE_In =OFF
o_bReady=OFF
o_bReady=ON
Reset Error 2
C002H
1
o_bS_ESPE_Out=OFF
o_bS_ESPE_Out=ON
4 SAFETY FB SPECIFICATIONS
4.5 M+SF_ESPE_R
4
35