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Product Manual 26615 (Revision R, 8/2020) Original Instructions – CPC-II Current-to-Pressure Converter with Enhanced Dynamics – Installation and Operation Manual .
The Woodward CPC-II (Current-to-Pressure Converter,version II, enhanced dynamics) is intended for positioning steam and/or fuel valves and/or associated servo systems. The CPC-II supplies a precise and stable hydraulic control pressure proportional to the (4 to 20) mA input current signal.
In addition to accurate pressure control, the CPC-II is designed for easy mounting and servicing. The manifold mounted housing can be mounted directly tothe hydraulic adapter/manifold.
For severe applications, or those with safety requirements, fully redundant CPC-II models are available. When used in a dual-redundant arrangement, the Slave CPC-II will take control if it detects that a fault has occurred in the Master. In this situation, Discrete Output 2 will change state to “In Control”.
CONTENTS:
WARNINGS AND NOTICES……………………………………………………………………………………………….. 5
ELECTROSTATIC DISCHARGE AWARENESS………………………………………………………………………… 6
REGULATORY COMPLIANCE……………………………………………………………………………………………. 7
CHAPTER 1. GENERAL INFORMATION………………………………………………………………………………. 10
Introduction……………………………………………………………………………………………………………………………….. 10
CHAPTER 2. SPECIFICATIONS………………………………………………………………………………………… 15
Performance ……………………………………………………………………………………………………………………………… 16
CHAPTER 3. INSTALLATION…………………………………………………………………………………………… 23
Receiving Instructions ………………………………………………………………………………………………………………… 23
Unpacking Instructions ……………………………………………………………………………………………………………….. 23
Mounting Instructions …………………………………………………………………………………………………………………. 24
Hydraulic Connections ……………………………………………………………………………………………………………….. 25
Electrical Connections ………………………………………………………………………………………………………………… 26
CHAPTER 4. INSTALLING AND RUNNING THE PC SERVICE TOOL……………………………………………. 36
Making the Hardware Connection ………………………………………………………………………………………………… 36
Locating and Installing the CPC-II Service Tool …………………………………………………………………………….. 37
System Display Scaling ………………………………………………………………………………………………………………. 37
CD Program Installation ……………………………………………………………………………………………………………… 38
Running the CPC-II Service Tool …………………………………………………………………………………………………. 42
CHAPTER 5. USING THE PC MONITORING TOOL FOR PERFORMANCE ASSESSMENT AND TUNING…. 44
Introduction……………………………………………………………………………………………………………………………….. 44
Common Header ……………………………………………………………………………………………………………………….. 46
Home ……………………………………………………………………………………………………………………………………….. 47
PC Service Tool Overview Screen ……………………………………………………………………………………………….. 48
Performance Trend and Manual Operation …………………………………………………………………………………… 49
Redundancy Overview ……………………………………………………………………………………………………………….. 52
Analog Input Settings …………………………………………………………………………………………………………………. 55
Analog and Discrete Output Settings ……………………………………………………………………………………………. 57
Pressure Demand Linearization Settings ………………………………………………………………………………………. 59
Detailed Diagnostics ………………………………………………………………………………………………………………….. 60
CHAPTER 6. CONFIGURING THE CPC-II USING THE PC SERVICE TOOL…………………………………… 65
Introduction……………………………………………………………………………………………………………………………….. 65
Dynamic Performance Settings……………………………………………………………………………………………………. 66
Configure Redundancy ………………………………………………………………………………………………………………. 68
Analog Input Configuration………………………………………………………………………………………………………….. 71
Analog and Discrete Output Configuration ……………………………………………………………………………………. 73
Pressure Demand Linearization Settings ………………………………………………………………………………………. 74
Configure Alarms and Shutdowns ……………………………………………………………………………………………….. 76
Dynamic Adjustments and Calibration ………………………………………………………………………………………….. 80
CHAPTER 7. REPAIR AND TROUBLESHOOTING…………………………………………………………………… 85
General …………………………………………………………………………………………………………………………………….. 85
Return for Repair Instruction ……………………………………………………………………………………………………….. 85
Protective Packaging …………………………………………………………………………………………………………………. 85
Troubleshooting ………………………………………………………………………………………………………………………… 85
CHAPTER 8. REPLACING OLDER CPCS AND NON-WOODWARD CONVERTERS WITH THE NEW CPCII …………………………………………………………………………………………………………………………….. 88
CHAPTER 9. PRODUCT SUPPORT AND SERVICE OPTIONS……………………………………………………. 89
Product Support Options …………………………………………………………………………………………………………….. 89
Released
Manual 26615 CPC-II Current-to-Pressure Converter /Enhanced Dynamics
Woodward 2
Product Service Options …………………………………………………………………………………………………………….. 89
Returning Equipment for Repair ………………………………………………………………………………………………….. 90
Replacement Parts …………………………………………………………………………………………………………………….. 91
Engineering Services …………………………………………………………………………………………………………………. 91
Contacting Woodward’s Support Organization ………………………………………………………………………………. 91
Technical Assistance …………………………………………………………………………………………………………………. 92
CHAPTER 10. ASSET MANAGEMENT AND REFURBISHMENT SCHEDULING PERIOD…………………….. 93
CHAPTER 11. LONG-TERM STORAGE REQUIREMENTS………………………………………………………… 94
REVISION HISTORY……………………………………………………………………………………………………… 95
DECLARATIONS………………………………………………………………………………………………………….. 97
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Construction
The main elements of the CPC-II include:
• Housing
• Rotary 3-way Hydraulic Valve
• Brushless Limited Angle Rotary Actuator
• Electronic PCB Assembly
• Pressure Sensor
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