9
2546099-01-10/21 (translation of the original operating instructions)
Operating Instructions
Electronic-Key-System EKS2
EN
9. Electrical connection
9.1.
General notes
WARNING
Loss of the safety function due to incorrect electrical connection.
Ì
Ensure that at least four of the safety outputs FO1A to FO1F can be evaluated by a safe control
system at all times.
Ì
Ensure that the safe control system can process 1-of-n signals.
Ì
Lay the connecting cables with protection to prevent short circuits.
Ì
Do not lay connecting cables in the immediate vicinity of sources of interference.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect electrical connection.
Ì
Ensure that all circuits connected to the device comply with the regulations for low voltages with
safe electrical isolation (SELV/PELV).
Ì
Ensure that power devices, which are a powerful source of interference, are installed in a separate
location away from the input and output circuits for signal processing. The cables of the safety
circuits must be installed as far away as possible from the cables of the power circuits.
Ì
Ensure that, to avoid EMC interference, the physical environmental and operating conditions
at the installation site of the device comply with the requirements according to the standard
EN 60204-1:2016, section 4.4.2 (EMC).
Ì
Pay attention to any interference fields from devices such as frequency converters or induction
heating systems. Observe the EMC notes in the manuals from the respective manufacturer.
9.2.
Notes about
Important!
Ì
This device is intended to be used with a Class 2 power source in accordance with UL1310.
As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can
be used:
This device shall be used with a suitable isolating source in conjunction with a fuse in accordance
with UL248. The fuse shall be rated max. 3.3 A and be installed in the max. 30 V DC power supply
to the device in order to limit the available current to comply with the UL requirements. Please note
possibly lower connection ratings for your device (refer to the technical data).
Ì
For use and application as per the requirements of
1)
a connecting cable listed under the UL
category code CYJV/7 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 fire).
