Operating Instructions Combics Indicators 157
Page
4
of
1
65954-750-16
Safety Information
11.05.2012
Klausgrete
Drawing No.
Designation
Revision 01
1. Mains Connection
Explosion-risk area Zone 2 or Zone 22Explosion-safe area
Indicator CAIS.
or
complete scale
CAW...-......-......
each with option Y2
2. Data Transfer
PC,
Printer,
PLC,
etc.
For data transfer only and, if required, supply for the connected
device (e.g. printer), there is no supply voltage going from the
connected device to the indicator / complete scale
These devices may also be
installed in Zone 2 or Zone 22
if they are suitable for
Category 3 as per the ATEX
Directive.
Gas: Group IIC, temperature class T4
Dust: Group IIIC, Tmax 80°C
Ambient temperature: -10°C … +40°C …
Protect connector from
equipment supplied from
being disconnected. Make
sure the emergency stop
works.
Connector from
equipment
supplied
Connection
alternatives
Use an explosion-protected connector
Equipotential
bonding conductor
Equipotential
bonding conductor
Note 8)
EX
Indicator CAIS.
or
complete scale
CAW...-......-......
each with option Y2
Note 8)
Note 16)
Ex-Safety Information
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