EB 6116 EN
13
Positioner attachment
7
Positioner attachment
Analog positioners with Ex d explosion pro-
tection can be implemented by combining a
p/p positioner with a Type 6116-2 (Ex d)
Converter.
In the Type 6116 Converter designed for po-
sitioner attachment, the connection to the po-
sitioner is used in place of the booster.
Another application involves upgrading p/p
positioners to electropneumatic positioners
(current signal input instead of the pneumatic
signal).
Type 6116-xx010111000xxxx
with ½ NPT electrical connection and
Type 6116-xx101012000xxxx
with M20 x 1.5 electrical connection
7.1
Principle of operation
When operated, the supplied direct current i
flows through the plunger coil (2) located in
the field of a permanent magnet (3). At the
balance beam (1), the force of the plunger
coil, which is in proportion to the current, is
balanced against the force of the dynamic
backpressure. The backpressure is produced
on the flapper plate (6) by the air jet leaving
the nozzle (7).
The air supply for the nozzle is taken from
the pneumatic positioner (connection to the
pneumatic input signal – input signal 27).
Fig. 7:
Functional diagram of version for positioner
1
Balance beam
2
Plunger coil
3
Permanent magnet
6
Flapper
7
Nozzle
8
Adapter (3766)
9
Adapter
10 O-ring
11 Vent plug
13 Flame protection filter
14 Restriction with air
supply
2
3
1
7 6
13
8(9) 11
14
10
Positioner
Input signal 27
Supply air
Type 6116
Содержание 6000 Series
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