Meggitt C173455 Servo motor controller

90 to 140 vdc, metering valve position control

Meggitt’s 90 to 140 VDC motor controller is  in use on a variety of industrial

gas turbine engines. With millions of field operating hours, this design

continues to prove the high reliability of Meggitt EMA technology.

Specifications

Function:Positioning controller for precision gas fuel metering valves used on

aero-derivative and frame turbine engines.

Type:  Digital pulse-width modulated servo-amplifier

Physical size:   9.625” wide, 8.5” high, 13.55 deep

Weight:  25 pounds

Input voltage: 90 to 140 VDC

Input current: 7.5 amperes maximum

Output current:   0.3 ampere (continuous), 7.0 amperes (peak)

Digital input/output: 0 to 5 VDC

Electrical connections:   Terminal strip, AWG 14 to 22

Communications:

C173455 – serial port interface RS-485; C173455-2 – analog

interface 4-20 ma

Ambient temperature:    0 to 70ºC (32 to 158ºF)

Remote installation:

Up to 60 meters (200 feet) wire run length from the fuel metering valve.

The controller consists of a servo amplifier, an I/O signal noise filter, and

a capacitor, which are packaged in a compact three level unit with readily

accessible interface terminations on its top plate. The servo amplifier is

mounted on a cold plate on the lower level, and the resistor/capacitor

network, inlet EMI noise filter and outlet common mode choke filter are

on the middle level.