Installation Instructions User Manual

4 Electrical connection

4.1 Installation notes

k The choice of the cable, the installation and the electrical connection

must conform to the requirements of VDE 0100 “Regulations on the In-

stallation of Power Circuits with nominal voltages below 1000V”, or the

appropriate local regulations.

k Work inside the instrument must only be carried out to the extent de-

scribed and, like the electrical connection, only by qualified personnel.

k If contact with live parts is possible while working on the instrument, it

must be isolated from the supply on both poles.

k The electromagnetic compatibility (EMC) conforms to the standards and

regulations listed under Technical Data.

v Chapter 7 “Technical data”

k Run the input, output and supply cables separately, and not parallel to

one another.

k All input and output cables without connection to the supply network

must be arranged as twisted and screened cables. Earth the screen on

the instrument side to the earth potential.

k Earth the instrument at the PE terminal to the protective conductor. This

cable should have the same cross-section as the supply cable. Earthing

cables should be run in a star layout to a common earthing point which is

connected to the protective conductor of the supply. Do not loop the

earthing cable, i.e. do not run it from one instrument to another.

k Do not connect any additional loads to the supply terminals of the instru-

ment.

k The instrument is not suitable for use in hazardous areas.

k Inductive loads close to the instrument, such as contactors or solenoid

valves, should have RC modules fitted for interference suppression.

k The supply to the instrument must be provided with additional fusing.

Depending on the supply voltage, the following fuse values apply:

20 — 30V AC/DC, 48 — 63Hz : fuse 2A slow

110 — 240V AC +10/-15%, 48 — 63Hz : fuse 1A slow

A type-G miniature cartridge fuse marked F1 is built into the instrument

itself:

20 — 30V AC/DC, 48 — 63Hz : fuse 1.6A slow

110 — 240V AC +10/-15%, 48 — 63Hz : fuse 0.63A slow