Installation; Electrical Connection - JUMO 202550 Operating Instructions Manual

7.1 Electrical connection

The electrical connection may only be carried out
by properly qualified personnel
The choice of cable, the installation and the electrical connection must
conform to the requirements of VDE 0100 "Regulations on the Installation
of Power Circuits with Nominal Voltages below 1000 V" or the appropriate
local regulations.
The electrical connection may only be carried out by properly qualified
personnel.
The instrument must be completely disconnected from the electrical supply
if contact with live parts is possible.
A current-limiting resistor interrupts the supply circuit in the event of a
short-circuit. Any additional external fusing of the supply should not be
rated below 1A (slow).
The load must be fused for the maximum relay current, in order to prevent
the contacts of the output relay becoming welded in the event of a short-
circuit.
The level of electromagnetic compatibility conforms to EN 61 326.
Run input, output and supply cables separately, not parallel to one another.
Sensor and interface cables should be shielded cables with twisted
conductors. Do not run them close to current-carrying components or
cables. Ground shielding at one end, to the TE terminal on the instrument.
The TE terminal on the instrument must be earthed. This lead must have at
least the same conductor cross-section as that used for the supply cables.
Grounding and earthing leads must be wired in a star configuration to a
common earth point that is connected to the protective earth of the
electrical supply. Do not loop earth or ground connections, i.e. do not run
them from one instrument to another.
Do not connect any additional loads to the supply terminals of the
instrument.
The instrument is not suitable for use in areas with an explosion hazard
(Ex areas).
In addition to faulty installation, incorrect settings on the controller
(setpoint, data of the parameter and configuration levels, internal
alterations) can also interfere with the correct operation of dependent
processes, or even cause damage. The stability of the actual value that is
produced should therefore be checked. Safety devices should always be
provided that are independent of the controller (such as overpressure
valves or temperature monitors/limiters) and only capable of adjustment by
specialist personnel. Please observe the relevant safety regulations for
such matters.
The measurement inputs of the controller must not exceed a maximum
potential of 30 V AC or 50 V DC against TE.
Sensor leads should only be implemented as uninterrupted cables
(not routed through terminal strips etc.).

7 Installation

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