7
SRB 324ST/R V.3
Operating instructions
Safety-monitoring module
EN
The connection of magnetic safety switches to the SRB
324ST/R V.3 safety-monitoring module is only admitted
when the requirements of the standard EN 60 947-5-3
are observed.
As the technical data are regarded, the following minimum
requirements must be met:
– switching capacity: min. 240 mW
– switching voltage: min. 24 VDC
– switching current: min. 10 mA
For example, the following safety sensors meet the
requirements:
– BNS 33-02z-2187, BNS 33-02zG-2187
– BNS 260-02z, BNS 260-02zG
– BNS 260-02-01z, BNS 260-02-01zG
Caution! When sensors with LED are wired in the control
circuit (protective circuit), the following rated operating
voltage must be observed and respected:
– 24 VDC with a max. tolerance of –5 %/+20 %
– 24 VAC with a max. tolerance of –5 %/+10 %
Otherwise availability problems could occur, especially in
series-wired sensors, where a voltage drop in the control
circuit is triggered by LED's for instance
8.4 Actuator configuration
Single-channel control with feedback circuit (Fig. 19)
•
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.
Dual-channel control with feedback circuit (Fig. 20)
•
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.
Y2
X5
57
13
58
14
K
B
K
A
S
L1
N
K
A
K
C
Y2
X5
57
13
58
14
K
B
K
C
K
D
K
A
K
B
L1
N
K
A
K
D
K
C
S
Fig. 19
Fig. 20
Differentiated control with feedback circuit (Fig. 21)
•
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. If the enabling circuit of the controller must be
equipped with its own feedback circuit, this circuit must be integrated
as shown in the wiring example "dual-channel control with feedback
circuit" (see there).
Y2
X5
57
13
58
14
K
A
L1
N
K
A
S
a)
Fig. 21
a) Enabling signal controller
