KROHNE OPTISYS SLM 2100, Handbook, Page: 29 / 88

ELECTRICAL CONNECTIONS
4
29
OPTISYS SLM 2100
www.krohne.com 01/2017 - 4002737304 - MA OPTISYS SLM 2100 R04 en
4.4 Important device-specific notes on electrical connection
Valve
Pump
Limit switch
Symbol Description
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries!
DANGER!
The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
DANGER!
When installing and wiring the device, note the safety regulations of the current state of the art.
Also note the following items to avoid fatal injuries, destruction or damage of the device or
measuring errors:
• De-energise the cables of the power supply before you start any installation works!
• All used cables must have a corresponding dielectric strength of min. 2 kV.
•
It is recommended to use shielded signal cables which are only connected on one side (e.g. to
the protective earth on the mainboard next to the relays).
•
If relays are used, note that with inductive loads the interference must be suppressed (spark
quenching).
•
Assure that all electrical connection works are compliant with the VDE 0100 directive
"Regulations for electrical power installations with line voltages up to 1000 V" or equivalent
national regulations.
•
Use suitable cable glands for the various electrical cables and suitable connecting cables for
the field of application. The outer diameter of the connecting cables has to fit to the cable
glands.
•
The nominal voltage of the connecting cable has to fit to the operating voltage of the device.
•
If the handrail is not adequately grounded, ground the device with a wire of 6 mm
2
/ 10 AWG
(American Wire Gauge).
INFORMATION!
Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.