EUCHNER CES-AR-C01-AH-SA (Unicode) - Manual (Page 10)

Operating Instructions Safety Switch CES-AR-C01-AH-SA
10
Caution!
Ì In order to avoid EMC interference, the physical environmental and operating
conditions at the installation site of the device must comply with the require-
ments according to the standard EN 60204-1:2006, section 4.4.2 (EMC).
Ì Please pay attention to any interference fields in case of devices such as
frequency converters or induction heating systems. Observe the EMC in-
structions in the manuals from the respective manufacturer.
Important!
If the device does not appear to function when operating voltage is applied (e.g.
green STATE LED does not flash), the safety switch must be returned unopened
to the manufacturer.
Safety in case of faults
Ì The operating voltage U
B
is reverse polarity protected.
Ì The contacts OA/OB are short circuit proof.
Ì A short circuit between OA and OB is detected by the switch.
Ì A short circuit in the cable can be excluded by laying the cable with protection.
Fuse protection for power supply
The power supply must be provided with fuse protection depending on the number
of switches and current required for the outputs. The following rules apply:
Max. current consumption of an individual switch I
max
I
max
= I
UB
+ I
OUT
+ I
OA+OB
I
UB
= Switch operating current (50 mA)
I
OUT
= Monitoring output load current (max. 200 mA)
I
OA+OB
= Load current of safety outputs OA + OB (2 x max. 400 mA)
Max. current consumption of a switch chain Σ I
max
Σ I
max
= I
OA+OB
+ n x (I
UB
+ I
OUT
)
n = Number of connected switches