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 S12 S21 S22
A1
A2
X3
X2
Q2
Q1
Y2
Y1
S
R
B
-E
-2
04
ST
Out
S31 S32 S41 S42
S72
S52
S51
Y3
S82
S62
S61
Y4
In 5 / 6
In 7 / 8
RUN
ERR
ln 1 / 2
ln 3 / 4
mode
1
S11 S12 S21 S22
A1
A2
X3
X2
Q2
Q1
Y2
Y1
S
R
B
-E
-2
04
PE
Out
S31 S32 S41 S42
S72
S52
S51
Y3
S82
S62
S61
Y4
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!
