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6
Electrical installation
6.1
Safety
6.1.1
Notes on electrical installation
NOTICE
Hazard due to unsuitable voltage source!
■
Note the supply voltage range
■
The voltage source must meet the requirements of ES1 and PS2 or lower
(EN62368-1), or SELV (EN60950-1).
NOTICE
Equipment damage or unpredictable operation due to working with live parts.
Working with live parts may result in unpredictable operation.
■
Only carry out wiring work when the power is off.
■
Only connect and disconnect electrical connections when the power is off.
■
The electrical installation must only be performed by electrically qualified person‐
nel.
■
Standard safety requirements must be observed when working on electrical sys‐
tems.
■
Only switch on the supply voltage for the device when the connection tasks have
been completed and the wiring has been thoroughly checked.
■
Perform all connection work only at ambient temperatures above 0 °C.
■
Only connect the device to the permitted supply voltage,
■
In the case of adapter cables with open end, make sure that bare wire ends do not
touch (risk of short circuit when the supply voltage is switched on). Wires must be
appropriately insulated from each other. This also applies to unused wires.
■
Wire cross-sections in the supply cable from the user’s power system must be
designed in accordance with the applicable national standards.
■
Wire cross-sections of the data and switching signal cables must also be designed
in accordance with the applicable national standards.
■
Circuits connected to the device must be designed as SELV circuits (SELV = Safety
Extra Low Voltage). The supply voltage must satisfy the requirements of SELV in
accordance with the currently applicable standards.
■
Protect the device with a separate fuse at the start of the supply circuit.
Data cables
NOTE
Layout of data cables
■
Use screened data cables with twisted-pair wires.
■
Implement the screening design correctly and completely.
■
To avoid interference, e.g. from switching power supplies, motors, clocked drives,
and contactors, always use cables and layouts that are suitable for EMC.
■
Do not lay cables over long distances in parallel with power supply cables and
motor cables in cable channels.
Serial data transmission (RS-232, RS422/485)
•
The possible cable length between the device and host computer depends on:
ELECTRICAL INSTALLATION
6
8024439//2019-06 | SICK
O P E R A T I N G I N S T R U C T I O N S | InspectorP621
27
Subject to change without notice