9907-1106 CPC-II current-pressure converter

Description

Overview

Essential details：9907-1106 CPC-II current-pressure converter

The Woodward CPC-II is a current pressure converter used to control steam intake valves or associated servo systems. CPC-II connects Receive 4-20mA current setting input to provide an accurate and stable pressure output proportional to the input current. In addition to precision
For pressure control, CPC-II also features ease of installation and maintenance. With sufficient support, the CPC-II face can With a variety of brackets.
The housing is made of anodized aluminum to seal and protect the CPC with 4 bolts on the end face. Aluminum cap with thread Provides protection, two level lock bolt to ensure that the upper cover is properly assembled. The protection rating is IP56 (according to IEC 60529), and there is under the base
A spiral return spring, which is attached to the lower part of the control shaft. The return spring brings the internal valve to the fully open by-pass position when power is lost.
A new three-way valve controls the output or drainage of the oil supply (see Figure 1-2). The valve consists of a stainless steel bushing and rotates within it Composed of stainless steel shafts, this design ensures accurate, reliable and non-contaminated operation of the turbine with standard oil. actuator
The CPC uses a fixed Angle rotary torque actuator, the permanent magnet rotor is directly connected to the hydraulic valve, and the rotor position is integrated in Circuit measurement on PCB board. Through the adjustment of the microprocessor, the H-driver implements precise control of the actuator and maintains the pressure
The force is consistent with the set value.
Printed circuit board
The circuit board is mounted on the top of the housing (see Figure 1-3). The circuit board has the following functions:
• Power supply
• Isolation of input and output circuits
• A second redundant setting or pressure feedback value input
• Pressure control
• Actuator position control module
• Type H drive

9907-1200

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9907-1106 CPC-II current-pressure converter

The shielded wiring portion of the analog output (J2-7) and RS-232(J2-1) is passed through a capacitor, as described in the wiring section of this manual
Yes.
The power supply section has 18-32Vdc input voltage EMI filtering and provides control voltage for sub-functional systems. To make sure it’s running right
Often, the power supply system is monitored, and if the input voltage or the internal power supply system is detected to be outside the allowable operating range, a diagnostic alarm will be raised
Show it.
Both primary setting and redundant setting/feedback signal inputs are 4-20 mA proportional control signals, and each input signal is selected
EMC protection and isolation. The minimum and maximum travel of the calibration set points and servomechanism are completed in the computer tool software. per
The input signals are monitored to ensure that they are within the permissible range. In some applications with high reliability requirements, the second mode
The intended input can be configured as a redundant set point input. Once an illegal set signal is generated, the CPC can detect the error and replace it
Go to the second input. The signal out of range can be selected as a shutdown or alarm condition and displayed through the switch output.
The built-in 4-20 mA pressure converter offers high reliability, accuracy and linearity. Its output value is also subject to internal diagnostic functions
Module monitoring, out-of-range values can be detected and optionally used as a condition for triggering alarms or shutdowns. In some high reliability requirements
In the application, the second analog input can be configured as a separate redundant feedback input. CPC can detect when internal sensors fail
This fails and switches to an external sensor (provided by the user). Another option is dual CPC with full redundancy once the main unit
When a signal, sensor, or internal error occurs, a second CPC will be put into operation.
Two switching outputs are used to display faults and alarm. The leds inside also light up when a fault is detected. Switching value
The output can be configured as normally on or normally off.