Avery ALS 230 User Manual download pdf (Page 68)

Operators Manual

ALS 230

Release 11/05 Page 66 Connections and signals

8.4 EMI

To protect the machines against electrical noise and to protect production of electrical noise

you have to follow this rules:

Rule 1

All metallic parts must have a good and plane contact (no lacquer, aluminium oxide is an

isolator). Use scratch washers.

Rule 2

Signal lines (Data- , communication- and control cable) has to separated to power cables. The

minimum distance is 50 cm (20 cm inside a cabinet).

Rule 3

All signal lines should be lead in the machine or cabinet only on one side.

Rule 4

Unshielded cables must be twisted (both poles).

Rule 5

On all inductive components (relays, valves) must be directly connected a clamp circuit (diode,

MOV).

Rule 6

All signal lines must be shielded. The shield must have a good earth connection on both

sides.

For the connection use metallic clamps. Don’t use a soldered wire for this connection.

In case of different earth potential on both cable sides install parallel a cable of at minimum 10

mm2.

Rule 7

The shield of analogue cable (Video etc) should be shielded only on one side. Normally there is

no such cable with labelling machines.

Rule 8

Line filter has to be mounted directly on the cable entry.

Rule 9

Cables should not fly in the air. Lead all cables nearby metallic, grounded parts. Ground

unused cables and wires in a cable at minimum on one side, better on both.

Rule 10

Cables should not be longer as necessary.

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Avery ALS 230 User Manual Page 68