191
8 Options
NOTICE
If cable shielding is provided, it must be connected to an extra protected earth terminal.
WARNING!
In circuits with max. 20 m cable length, only 3 signals are allowed to be transmitted in one ca-
ble, otherwise this can lead to a dangerous malfunction.
Safety interlock chain is open but recognised as closed.
8.2.3.1 Galvanic Isolation
DANGER!
Attention! Short-circuit danger and electrical shock!
An improper wiring could lead to a short-circuit which may cause damages to connected de-
vices or an electrical shock.
Please ensure all connections on SELV have a safe separation from main voltage in wir-
ing and with connected devices!
Option 2 Curve Set 2 O 10 m - Option 2
Valve 1 Curve Set 1 O 10 m - output fuel valve 1
Valve 2 Curve Set 1 O 10 m - output fuel valve 2
Option 1 Curve Set 1 O 10 m - Option 1
SIC Curve Set 1 O 10 m - input SIC fuel
Option 2 Curve Set 1 O 10 m - Option 2
LSB I/O X 100 m
Signal Line Type Shield Cable length max. [m]
I = Input
O = Output
AC = Power supply input; 230/115 V 47 ... 63 Hz
DC = Direct voltage supply
SIC = Safety interlock chain
Fig. 8-28 Galvanic isolation DFM300
LV = Line Voltage
SELV = Safety Extra Low Voltage
provides protection
against electrical shock.
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