21
Fieldbus Valve Coupler FD0-VC-Ex4.FF
Installation
Subject to reasonable modifications due to technical advances.
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5.4.3
Connection of auxiliary valves and final position feedback contacts
The following illustration shows the location and designation of the terminals for valve connection and PFCs.
Figure 5.4: Location and designation of the connector terminals for the valve connection incl. final position feedback contacts
Terminal assignment
As described in section 4.2.4, the PFCs are used in the 2:1 procedure. For the connection of sensors or
mechanical contacts the possible connections are shown in figure 5.5; terminals 3 and 4 are given as
examples.
Terminal
Signal
Explanation
1
Valve 1 +
Output, trigger signal for valve 1
2
Valve 1 –
3
PFC 1A +, PFC 1B –
2 inputs, signals of 2 PFCs from valve 1, transfer by 2:1 procedure
4
PFC 1A –, PFC 1B +
5
Valve 2 +
Output, trigger signal for valve 2
6
Valve 2 –
7
PFC 2A +, PFC 2B –
2 inputs, signals of 2 PFCs from valve 2, transfer by 2:1 procedure
8
PFC 2A –, PFC 2B +
9
Valve 3 +
Output, trigger signal for valve 3
10
Valve 3 –
11
PFC 3A +, PFC 3B –
2 inputs, signals of 2 PFCs from valve 3, transfer by 2:1 procedure
12
PFC 3A –, PFC 3B +
13
Valve 4 +
Output, trigger signal for valve 4
14
Valve 4 –
15
PFC 4A +, PFC 4B –
2 inputs, signals of 2 PFCs from valve 4, transfer by 2:1 procedure
16
PFC 4A –, PFC 4B +
PA
Equipotential bon-
ding
Connection for equipotential bonding and/or connection for the
screen between the valve coupler and valve and PFC. Preferably no
screened cable should be used here
Connector terminals for the
valves and final position sensors
