Figure 1: Supply Principle Ex I - WAGO -I/O-SYSTEM 750 750-481/003-000 Manual

14 Device Description
The Ex i I/O modules shall only be supplied using the Ex i 24VDC potential
feed module!
An additional supply module 750-625, DC 24 V Ex i must be added for the
approved intrinsically safe field side supply voltage of 24 V.
Bus coupler / Controller
24V
Electronic

Figure 1: Supply Principle Ex i

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The Ex i I/O module receives the 24V voltage supply for the field level from an
upstream Ex i I/O module or from an Ex i power supply module via the power
contacts used as blade contacts. It then provides this potential to subsequent I/O
modules via the power contacts used as spring contacts.
Po s: 17.15 /Serie 750 (WAGO-I/O-SYSTEM)/Wichtige Erläuterungen/Sicherheitshinweise/Achtung/Achtung: Maximaler Strom Ex i Einspeisung 750-06xx 0,5 A / 1,0 A @ 7\mod_1274358256668_21.doc @ 56898 @ @ 1
Do not exceed maximum current via power contacts!
The maximum current available from the 750-625 Ex-i Supply Module is
500 mA.
The maximum current available from the 750-606 or 750-625/000-001 Ex-i
Supply Module is 1000 mA.
Greater currents can damage the power contacts.
When configuring the system, ensure that this current is not exceeded. If
exceeded, an additional potential feed module must be used.
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* 750-606 with electronic fuse and diagnostics
750-625 with wire fuse, without diagnostics
750-625/000-001 with electronic fuse, without diagnostics
24V 24V
Field Field
Potential 1 Potential 2
750-481/003-000 2AI RTD Ex i
I/O modules
Ex i Ex i Ex i
606/625 435 535
*
WAGO-I/O-SYSTEM 750
Ex i Ex i
485 585
Manual
1.1.0