106
FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V1-0/2020-10 · © SICK Engineering GmbH
Installation Interface Unit
6.5
Electrical installation
6.5.1
Safety information
All assembly work previously described must be completed (as far as applicable) before
starting installation work. Carry out all installation work on-site unless otherwise explicitly
agreed with SICK or authorized representatives. This includes laying and connecting the
power supply and signal cables and installing switches and power fuses.
6.5.2
Cable specification
WARNING:
Electrical hazard
Incorrect cabling can cause device malfunctions, failure of the measurement
system or serious injuries.
▸
Observe the relevant safety regulations as well as the safety notices in
during all installation work.
▸
Take suitable protection measures against possible local hazards or
hazards arising from the equipment.
▸
All work may only be carried out when the device is disconnected from the
power supply.
▸
Before opening the cover, the device must be disconnected from the power
supply.
WARNING:
Danger due to missing fuse protection of the power supply line
An external line fuse must be provided during installation. Internally, the main
power supply lines are designed for an overcurrent protection device up to max.
16 A.
Requirements for the external main power switch:
▸
A main power switch must be provided in the installation.
▸
The main power switch must be located at a suitable position and must be
easily accessible.
▸
The main power switch must be marked as disconnecting device for the
device.
WARNING:
Electrical hazard
▸
The cables and wires must be permanently installed. The plant operator
must provide adequate strain relief.
▸
Cables must have a permitted operating temperature of min. 70 °C.
NOTICE:
Requirements on cables and installation
▸
Pay attention to the requirements in EN 60079-14 when selecting the
cables and during installation!
▸
Further legal requirements must be observed for use in explosive
atmospheres.
▸
For devices with Ex approval, the cable inlets must have an Ex approval
minimum Ex ec IIC.
▸
All cable inlets or cable sealing plugs must be approved for a temperature
range of -40°C ... + 60°C or -40°C ... +65°C, depending on the version.
▸
Only copper wires may be used.