71
2504708-03-02/21 (translation of the original operating instructions)
Operating Instructions
Light Grids/Light Curtains LCA 2
EN
8. Electrical connection
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection
Ì
Before making the electrical connections, make sure that the available supply voltage matches the
voltage stated in the technical data.
Ì
The transmitter and receiver must be supplied with a voltage of 24 V DC ± 20% (PELV; must corre-
spond to EN 60204-1 (chapter 6.4)).
Ì
The electrical connections must be made while following the wiring diagrams in these operating
instructions. No other devices are allowed to be connected to the plug connectors on the transmit-
ter and receiver.
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On the use of a power supply unit with diode bridge, the output capacitance must be at least
2,000 μF for each ampere drawn.
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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 the safety cir-
cuits should be as far away as possible from the cables for the power circuits.
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The function earth must be connected to comply with the EMC requirements.
Ì
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 60204-1:2006,
section 4.4.2 (EMC).
WARNING
To ensure safety, both safety outputs must always be evaluated.
8.1. Notes on
Important!
Ì
This device is intended to be used with a Class 2 power source.
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 UL
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).
Summary of Contents for LCA 2 Series
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