4
Operating instructions
Safety-monitoring module
SRB-E-204ST / SRB-E-204PE
EN
4.2 Coding of connecting terminals
5. Operating principle and settings
5.1 Description of the terminals and LED indications
Pin Function LED Function
A1 Operating voltage
+ 24 VDC
RUN Operating voltage OK
RUN mode
For flash code, see section 6.1
A2 Operating voltage
0 V
ERR Error code
refer to part 6.2
X2 Input of start circuit /
cascading
X3 Input feedback circuit /
Cascading
S11/S21
S31/S41
S51/S61
Test pulse outputs
S12
S22
Input channel 1
Input channel 2
In 1/2 High level at S12/S22
For flash code, see section 6.1
S32
S42
Input channel 1
Input channel 2
In 3/4 High level at S32/S42
For flash code, see section 6.1
S52
S62
Input channel 1
Input channel 2
In 5/6 High level at S52/S62
For flash code, see section 6.1
S72
S82
Input channel 1
Input channel 2
In 7/8 High level at S72/S82
For flash code, see section 6.1
Y1 Signalling output (NO),
sensor 1
Y2 Signalling output (NO),
sensor 2
Y3 Signalling output (NO),
sensor 3
Y4 Signalling output
(NO), sensor 4
Q1/Q2 Safety outputs Out Outputs activated
For flash code, see section 6.1
1
S11 S1 2 S2 1 S22
A1A2X3X2
Q2Q1Y2Y1
SRB-E-204ST
Out
S3 1 S32 S4 1 S42
S7 2S5 2S5 1Y3
S8 2S6 2S6 1Y4
In 5 / 6
In 7 / 8
RUN
ERR
ln 1 / 2
ln 3 / 4
mode
1
S11 S1 2 S2 1 S22
A1A2X3X2
Q2Q1Y2Y1
SRB-E-204PE
Out
S3 1 S32 S4 1 S42
S7 2S5 2S5 1Y3
S8 2S6 2S6 1Y4
In 5 / 6
In 7 / 8
RUN
ERR
ln 1 / 2
ln 3 / 4
mode
Adjustment of application using rotary “mode” switch
• Open front transparent cover (see fig.).
• Opening is carried out by lifting side with lock.
• Select desired application using rotary mode switch (1 … 10) by
turning up or down (see 5.3).
• After performing setting, close front cover again.
• Front cover can be secured with a lead seal to protect it from being
opened unintentionally
Only touch the components after electrical discharge!