Series 760E Valve Controller I/P Converter Installation
Kit
This is the Moore (now Siemens) kit for the 760E positioner,
Order P/N 15900-378 Price $531 ($577 for rush)
INSTALLATION
The temperature in the intended operating location must
not exceed the specified operating temperature limits of -40°C to +85°C.
It is recommended to have a copy of the Service Instructions (SD760)
available for easy reference.
See section 2.5 of SD760 for general and hazardous
location wiring requirements. Control Drawing 15032-7602 is recommended
for hazardous installations and is available upon request.
-
Remove sealing plate screw and sealing plate. Retain
the two "O"-rings.
-
Install the two existing "O"-rings in their seats.
Install 1/P manifold, new "O"-rings, and I/P provided with the kit.
Secure in place with new screw.
-
Attach the input leads (recommend 22 AWG shielded,
twisted pair wire minimum) to the + and connections of the I/P converter
terminal strip. The wire should enter the controller through the conduit
connection and be routed through the wire clamp (refer to Figure 1).
-
Attach the wire clamp with its screw.
-
Install pipe plug in input port. Install ground screw
and washer. Install clamping plate with toothed lockwasher and screw
Calibration
It is not necessary to calibrate the I/P transducer;
however, calibration adjustments are available. The I/P transducer can be
adjusted by following the procedure outlined below. The I/P accepts a 4-20
mA signal.
Verify the output of the I/P converter as follows:
-
Connect a 0-30 psi test gauge to the 1/8 in. NPT
input gauge port.
-
Apply supply pressure to the supply connection.
-
Apply a 4 mA input signal. Any deviation in the
output signal from 3 psi can be corrected with the zero adjustment screw
( >0< ).
-
Increase the input signal to 20 mA. Any deviation in
the output signal from 15 psi can be corrected with the range
potentiometer (<|-|>).
Perform the valve controller zero and span functions as
described in Section 4.0 (Calibration) of SD760.