Emerson Fisher 3610JP User Manual

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Fisherr 3610J and 3620J Positioners and 3622
Electro-Pneumatic Converter
Fisher 3610J or 3610JP pneumatic and 3620J or 3620JP
electro-pneumatic positioners are used in combination
with either single or double-acting rotary actuators to
accurately position control valves used in throttling
applications. The positioner mounts integrally to the
actuator housing. These rugged positioners provide a
valve position proportional to a pneumatic or a DC
current input signal.
The 3610J or 3610JP pneumatic positioner in
combination with the Fisher 3622 electro-pneumatic
converter becomes the 3620J or 3620JP positioner,
respectively. This integral electro-pneumatic
converter, can be factory installed or installed in the
field on existing positioners. The electro-pneumatic
converter receives the DC current input signal and
provides a proportional pneumatic output signal
through a nozzle/flapper arrangement.
The output signal from the converter becomes the
input signal pressure to the pneumatic positioner,
eliminating the need for a remote mounted
transducer.
The positioner mounts on the actuator as shown
below. Figure 1 shows the cam feedback mechanism
for a positioner mounted on the actuator. Positioner
bleed air continually purges the enclosure containing
the feedback lever and the feedback linkages.
To support diagnostic testing of
valve/actuator/positioner packages, connectors,
piping, and other hardware can be installed between
the 3610J or 3620J positioner and the actuator.
W4920-1
ELECTRO-
PNEUMATIC
CONVERTER
FISHER 3620JP ELECTRO-PNEUMATIC POSITIONER
WITH 1061 ACTUATOR AND V500 VALVE
W3949
BYPASS
VALVE
FISHER 3610J PNEUMATIC POSITIONER WITH
1052 ACTUATOR AND ECCENTRIC DISC VALVE
3610J and 3620J Positioners
D200064X012
Product Bulletin
62.1:3610
February 2015