12 Advance Optima Ex Analyzer Modules Operator’s Manual 42/24-12-2 EN
Connect Electrical Lines - Instructions
F
Follow
• the instructions and notes in the "Electrical Connections" and "Analyzer System
Start-Up" chapters of Operator’s Manual 42/24-10 EN,
• the following special instructions and notes as well as
• the notes in the "Electrical Equipment in Explosion Hazard Zones" sections in
the Annex.
CAUTION!
The external potential compensation connection or the green/yellow wire of
the three-wire 24-VDC power supply cable must be connected to the local
potential compensation point. The connection to the local potential compen-
sation point must be made before all other connections.
The Ex analyzer module can be hazardous if potential compensation is inter-
rupted inside or outside the analyzer module.
The 24-VDC connection cable and the system bus must be firmly secured.
They should not be shortened to a length of less than 1 meter and must not
be damaged.
Connecting the
Ex Analyzer Modules
to the
(Ex) Central Unit
The type and means of connecting Ex analyzer modules to the (Ex) central unit
depends on (see the following table):
• The zone in which the Ex analyzer module and the (Ex) central unit are installed
• The separation between the Ex analyzer module and (Ex) central unit
The following connection diagrams referred to in the table
• Schematically identify the cabling between the Ex analyzer module and (Ex)
central unit
• Show the details of individual lead to terminal connections
Distance System Bus Connection 24-VDC Connection Fig.
1 Ex Analyzer Module in Zone 1, CU-Ex in Zone 1
1–10 meters To isolation relay -K01 and
to terminal strip -K05
To power line filter -Z01 2
10–30 meter
Via EEx-e connection box
to isolation relay -K01
Via EEx-e connection box
to power line filter -Z01
3
3 Ex Analyzer Modules in Zone 1, CU-Ex in Zone 1
10–30 meter
Via EEx-e connection box
to isolation relay -K01
Via EEx-e connection box
to power line filter -Z01 (only
for one analyzer module) and
to external power supply
4
1 Ex Analyzer Module in Zone 1 or Zone 2, Central Unit in Zone 2 or Ex-Free
1–10 meters To terminal strip -K06 To power line filter -Z01 5
10–30 meter
Via EEx-e connection box
to terminal strip -K06
Via EEx-e connection box
to power line filter -Z01
6
≤ 30 meters Via connection box
with standard cable and tee
Via connection box
to power line filter -Z01
7
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