Operating Instructions
Key Adapter CKS-K-AS2A-U-C20-PC
8
(translation of the original operating instructions) 123914-01-05/15
8. Electrical connection
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
Ì
Power devices which are a powerful source of interference must be installed in a separate location
away from the input and output circuits for signal processing. The cable routing for safety circuits
should be as far away as possible from the cables of the power circuits.
Ì
In order to avoid EMC interference, the physical environmental and operating conditions at the
installation site of the device must comply with the requirements 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 instructions in the manuals from the respective man-
ufacturer.
Important!
If the device does not appear to function when the operating voltage is applied (e.g. green LED does
not flash), the key adapter must be returned unopened to the manufacturer.
8.1. Notes about
Important!
Ì
For use and operation as per the
requirements, a power supply with the feature "for use in
class 2 circuits" must be used.
Alternative solutions must comply with the following requirements:
a) Electrically isolated power supply unit with a max. open-circuit voltage of 30 V/DC and a limited
current of max. 8 A.
b) Electrically isolated power supply unit in combination with fuse as per UL248. This fuse should be
designed for max. 3.3 A and should be integrated into the 30 V DC voltage section.
