Manual 35132
VariStroke-DX Duplex Hydraulic Servo Skid
Woodward
2
Illustrations and Tables
Figure 1-1. Basic VS-DX Application and Configuration ............................................................................... 9
Figure 1-2. VS-DX Main Components (Junction Box Version). .................................................................. 10
Figure 1-3. VariStroke-DX, Junction Box Version, front view ..................................................................... 11
Figure 1-4. VariStroke-DX, Junction Box Version, Top View ...................................................................... 11
Figure 1-5. VariStroke-DX, Junction Box Version, Bottom View ................................................................ 12
Figure 1-6. VariStroke-DX, Junction Box Version, Back View .................................................................... 12
Figure 1-7. VariStroke-DX, Junction Box Version, Side View ..................................................................... 13
Figure 1-8. VariStroke-DX, Without Junction Box Version, Front View ...................................................... 14
Figure 1-9. VariStroke-DX, Without Junction Box Version, Rear View ....................................................... 14
Figure 1-10. VariStroke-DX, Without Junction Box Version, Bottom View ................................................. 15
Figure 2-1. VariStroke-DX, Hydraulic Schematic ........................................................................................ 18
Figure 3-1. VS-DX Lifting Bracket Locations .............................................................................................. 20
Figure 3-2. VariStroke-DX, Junction Box Version, Main Terminal Box, Wiring Points Access .................. 22
Figure 3-3. VariStroke-DX, Junction Box Version, Main Terminal Block Connections Chart ..................... 23
Figure 3-4. VariStroke-DX, Junction Box Version, Wiring Diagram ............................................................ 24
Figure 3-5. VariStroke-DX, VariStroke-DX, Without Junction Box Version, Wiring Diagram ..................... 25
Figure 3-6. Cylinder Position Sensor Connection Scheme ......................................................................... 26
Figure 3-7. PE Ground Connection Localization and Details, Junction Box Version ................................. 28
Figure 3-8. PE / Chassis Ground Connection Localization and Details, Without Junction Box Version (On
Both VS) ................................................................................................................................. 28
Figure 4-1. Isolation Valve Lever Positions ................................................................................................. 33
Figure 4-2. VS-DX Unit Components Topology .......................................................................................... 34
Figure 4-3. VS-DX Unit with Both Servos Control Port Paths Isolated ....................................................... 34
Figure 4-4. VS-DX unit VS-GI Unit “A” with Control Isolation Valves in Open Position .............................. 35
Figure 4-5. VS-DX Unit with All Isolation Valves in OPEN (Not Isolating) Position. ................................... 36
Figure 4-6. VS-DX Unit to Unit Control User Demanded Switchover Action Typical Performance ............ 38
Figure 4-7. VS-DX Unit to Unit Control Switchover Action Typical Performance (One Unit Shutdown) .... 39
Table 1-1. Definitions and Abbreviations ...................................................................................................... 7
Table 1-2. Woodward Reference Literature .................................................................................................. 7
Table 2-1. Environmental ............................................................................................................................ 16
Table 2-2. Physical ...................................................................................................................................... 16
Table 2-3. Electrical Specifications ............................................................................................................. 16
Table 2-3. VS-DX without Junction Box Version (to Each VS Unit)............................................................ 17
Table 2-4. Cylinder Position Sensor Requirements .................................................................................... 17
Table 2-5. Hydraulic Specifications ............................................................................................................. 18
Table 3-1. Recommended Fuse Ratings or Circuit Breakers. .................................................................... 27
Table 5-1.List of available Replacement Kits .............................................................................................. 40
Table 5-2. Trouble Shooting Data ............................................................................................................... 42
Released
