EUCHNER CES-AZ-UES-xxx (Multicode) - Manual (Page 14)

Operating Instructions Safety System CES-AZ-UES-...
14
Connection example CES-AZ-UES-02B
Important!
To achieve category 4 according to EN ISO 13849-1, it is necessary to monitor
the downstream contactors (here contacts of -K3 and -K4 in the feedback loop).
This example shows only an excerpt that is relevant for connection of the CES
system. The example illustrated here does not show complete system planning.
The user is responsible for safe integration in the overall system.
If only one enable path is to be used for control (e. g. of downstream contactors),
failures involving a short circuit between the contacts on the enable path and, for
example, the power supply must be excluded.
With reference to EN ISO 13849-2 Table D.5, this exclusion can be provided if
Ì
the cables are inside an electrical installation space and
Ì
the enclosure meets the related requirements (see EN 60204-1 or IEC 60204-1).
This example shows only an excerpt that is relevant for connection of the CES
system. The example illustrated here does not show complete system planning.
The user is responsible for safe integration in the overall system.
24 VDC
GND
-F1
0V
TST
-F2
UB
CES-AZ-UES-02B
105140
J1 J2 SH1
O1
Read-
head 1
H11
Trans-
ponder
O2
H12
EUCHNER
SH2
-V1
Read-
head 2
H21
DIA
Trans-
ponder
H22
-K3
A1
A2
23 24
-V2
13 14
-K4
A1
A2
feedback loop
Y1 Y2
-K4
21
22
-K3 21
22
S
Start
L1
-K3
13
14
-K4
13
14
M
3 ~
-M1
L2
23
24
23
24
L3
33
34
33
34
K2
+
K1
+