EUCHNER CES-I-BR Series User Manual

Operating Instructions
Non-Contact Safety Switch CES-I-BR-.-C07-…
10
(translation of the original operating instructions) 2510145-02-07/18
8.1. Notes about
Important!
Ì For use and operation as per the requirements
1)
, a power supply with the feature “for use in
class 2 circuits” must be used.
Alternative solutions must comply with the following requirements:
- Electrically isolated power supply unit with a max. open-circuit voltage of 30VDC and a limited
current of max. 8A.
Ì For use and applications as per the requirements of
1)
, a connection cable listed under the UL
category code CYJV2 or CYJV must be used.
1) Note on the scope of the UL approval: the devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock
and re). Only for applications as per NFPA79 (Industrial Machinery).
8.2. Safety in case of faults
Ì The operating voltage U
B
is reverse polarity protected.
Ì The safety outputs are short circuit-proof.
Ì A short circuit between the safety outputs is detected by the switch.
Ì A short circuit in the cable can be excluded by laying the cable with protection.
8.3. 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
OD
+ I
FO1A
+
FO1B
I
UB
= Switch operating current (40mA)
I
OD
= Load current of monitoring outputs (max. 50mA)
I
FO1A+FO1B
= Load current of safety outputs FO1A + FO1B (2xmax. 150mA)
Max. current consumption of a switch chain Σ I
max
Σ I
max
= I
FO1A+FO1B
+ nx(I
UB
+ I
OD
)
n = Number of connected switches
8.4. Requirements for connection cables
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection cables.
Ì Use connection components and connection cables from EUCHNER.
Ì On the usage of other connection components, the requirements in the following table apply.
EUCHNER provides no warranty for safe function in case of failure to comply with these require-
ments.
Observe the following requirements with respect to the connection cables:
Parameter Value Unit
Conductor cross-section, min. 0.25 … 0.34 mm²
R max. 80 W/km
C max. 120 nF/km
L max. 0.65 mH/km
Recommended cable type LIYY 8 x 0.34mm²

EUCHNER CES-I-BR Series Specifications

General

Brand	EUCHNER
Model	CES-I-BR Series
Category	Switch
Language	English