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Verfügbare Sprachen
Verfügbare Sprachen
Terminal
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PA
For the connection of the PFCs the 2:1 procedure is used. This allows to transfer two
independent binary signals to a pair of cores. A prerequisite of this procedure is that
the sensors/mechanical contacts are provided with a polarised diode and one of the
two sensors/mechanical contacts is operated in polarised mode.
For suitable sensors please refer to the data sheet of the valve coupler
FD0-VC-Ex4.PA.
Both NAMUR sensors listed in the data sheet and mechanical contacts provided with
two polarised diodes can be used as final position feedback contacts.
Whether an actuated sensor or an actuated mechanical contact represents an open
or closed valve depends on the construction of the position feedback and cannot be
shown in general.
The valve coupler supports the following two versions of connection:
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
Signal
PFC 2A +, PFC 2B -
PFC 2A -, PFC 2B +
Valve 3
Valve 3-
PFC 3A +, PFC 3B-
PFC 3A -, PFC 3B+
Valve 4+
Valve 4+
PFC 4A +, PFC 4B -
PFC 4A -, PFC 4B+
Equipotential bonding
Instruction Manual
Explanation
2 inputs, signals of 2 PFCs of channel 2,
transfer by 2:1 procedure
Output, trigger signal for valve 3
2 inputs, signals of 2 PFCs of channel 3,
transfer by 2:1 procedure
Output, trigger signal for valve 4
2 inputs, signals of 2 PFCs of channel 4,
transfer by 2:1 procedure
Connection for equipotential bonding and/
or connection for the screen between the
valve coupler and valve and PFC. Prefe-
rably no screened cable should be used
here.
Copyright Pepperl+Fuchs, Printed in Germany
FD0-VC-Ex4.PA
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