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 control push to run When
de-energised, the Aux input Open/Close control will be maintained. ESD is always
push to run (non maintained).
5. Remote Source Setting [Od]
Ensure that the correct
[Od]
setting is selected
(refer to page 38)
.
For Profibus 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]
49
PF
Profibus Remote
Auxiliary Input
