Rules
1. Function bit set to ‘‘0’’
Any function bit set to ‘‘0’’ indicates that the particular aux input is to be treated as
a digital signal for field status reporting, e.g. a level switch or motor running status.
If the corresponding invert bit is set to a ‘‘0’’, an open contact is reported as a logic
"1" and a closed contact is reported as a logic ‘‘0’’ (i.e. this will invert the input).
If the corresponding invert bit is set to a ‘‘1’’, an open contact is reported as a logic
"0" and a closed contact is reported as a logic ‘‘1’’ (i.e. this gives a noninverting
input).
2. Function bit set to ‘‘1’’
Any function bit set to ‘‘1’’ indicates that the particular aux input is to be treated as
a digital command to operate the actuator.
When the corresponding invert bit is set to a ‘‘0’’ this represents an N.C. contact as
being the command source, i.e. a closing contact de-energises the input and an
opening contact energises the input.
When the corresponding invert bit is set to a ‘‘1’’, this represents an N.O. contact as
being the command source, i.e. a closing contact energises the input and an
opening contact de-energises the input.
3. ESD Control
When using ESD (aux input 4), the ESD contact mode setting
[A2]
should be set to
the default value of
[
n
O]
. The
[A1]
–ESD direction setting should be set to either
Open or Close the valve
(refer to page 30)
.
4. Stop/Maintain Control
When energised this will make the Aux input Open/Close/ESD control push-to-run,
(non-maintained).
When de-energised, the Aux input Open/Close/ESD control will be maintained.
5. Remote I/P Setting
Ensure that the correct
[Od]
setting is selected (refer to page 38).
For Pakscan this is
[oP]
.
The factory default for
[PF]
is
[OF]
.
Examples
1. The full range of remote controls is needed. Open and Close are NO and ESD
and Stop/maintain is NC.
Aux I/P
4 3 2 1
Function
1 1 1 1
= F
Invert
0 0 1 1
= 3
i.e. set [PF] to [F3]
2. Open and close control is required along with 2 inverted digital signal inputs
(Note that with this setting the open and close commands will be maintained.)
Aux I/P
4 3 2 1
Function
0 0 1 1
= 3
Invert
0 0 1 1
= 3
i.e. set [PF] to [33]
3. Only an ESD input is needed. The requirement is for push to run control with a
NO contact input.
Aux I/P
4 3 2 1
Function
1 1 0 0
= C
Invert
1 0 0 0
= 8
i.e. set [PF] to [C8]
41
PF
Pakscan Remote
Auxiliary Input
