7
SRB 202MSK /
SRB 202MSK/QS
Operating instructions
Safety-monitoring module
EN
8.2
Sensor coniguration
Dual-channel muting circuit (Fig. 14)
•
Wire breakage and earth leakage in the control circuits are detected.
•
The SRB 202MSK/QS detects cross-wire shorts between the muting
sensors.
•
With external reset button
•
The reset button is integrated in the feedback circuit in series.
•
If the reset button is not required, establish a bridge.
•
Control category 4 – PL “e” to DIN EN ISO 13849-1 possible
Master reset (Fig. 15)
•
The master reset pushbutton must be connected to terminal X1-MR.
•
The master reset enables resetting a locked safety-monitoring module.
The input MR reacts on a rising edge.
S12
S11
S1
K
A
K
B
S22
S21
S2
X2
X1
J
MR
X1
Master-
J
Fig. 14
Fig. 15
8.3
Actuator coniguration
Dual-channel control with feedback circuit (Fig. 16)
•
Suitable for increase in capacity or number of contacts by means of
contactors or relays with positive-guided contacts.
•
S
= Feedback circuit:
if the feedback circuit is not required, establish a bridge.
X1
X2
13
23
24
14
K
A
S
L1
N
K
B
K
A
K
B
Fig. 16
8.4 Flow diagram
see Fig. 17
f)
e)
d)
c)
b)
a)
1
1
0
0
1
0
1
0
1
0
t
S
t
S
i)
h)
g)
Fig. 17
a) Bypass switch S1;
b) Bypass switch S2;
c) Simultaneity indication L54;
d) Signalling output L84 (lamp current);
e) Lamp current LA1-LA2;
f) Output contacts 13-14 / 23-24 potential-free;
g) uninterrupted workcycle;
h) Synchronous actuation fault ts > 2.5 s
i) Muting indicator defective
