1. WEDGE CONTROLLER
The WEDGE is attached to the back of the control panel.

2. WEDGE CONTROLLER
WEDGE Controller is the heart of the machine monitor and control system.
It provides data collection, alarming and control functions for compressor operations.
It is an Intel micro-controller based unit with analog and digital inputs and outputs.

3. WEDGE CONTROLLER
First function of the WEDGE is to scan all analog and digital inputs at a fixed interval. The inputs are scanned every 50 milliseconds. The values are then compared against min. and max. values and an ALERT or SHUTDOWN is issued.
Second function to monitor discharge press., and varies engine speed to maintain air press. at desired setpoint.
Third function to retrieve diagnostic info from the engine.

4. WEDGE CONTROLLER
There are two types of temperature sensors, RTD’S and Thermistors.
Both of these devices exhibit a change in resistance as the temperature changes.
This resistance change causes an input voltage change to the WEDGE Controller Input and is interpreted as a temperature change.

5. Wedge to Engine Controller

6. Wedge to Engine Controller

7. Wedge Controller

8. Engine Controller
Cummins ECM Location

9. Wedge display units available
Wedge can display the following units;
Deg F, PSI will be displayed as ‘PSI’
Deg C, Bars will be displayed as ‘Bar’
Deg C, Kg/cm2 will be displayed as ‘H9C’
DegC, Kpa will be displayed as ‘ HPA’
NOTE: To set refer to the operators manual.

10. Wedge display identification
Number Parameter
2 RPM F/W sensor
3 RPM Filtered
4 Reg system pressure (PSI)
5 Sep tank pressure (PSI)
6 Discharge temperature (F)
7 Sep tank temperature (F)
8 Hz (throttle output)
9 Machine type **
** 1 = Cummins XHP Viking, 2 = CAT EMU LP, 3 = CAT EMU HP, 4 = XHP CAT Viking, 5 = Cummins EMU LP, 6 = Cummins EMU HP, 7 = P426 Deere, 8 = WW600 Deere

11. Wedge display identification
Number Parameter
10 Engine coolant temp (F)
11 Engine oil temp (F)
12 Engine oil pressure (PSI)
13 Intake Manifold temp (F)
14 RPM from CAN
15 Fault code list
16 Throttle Position
17 Boost Pressure
18 Engine Hours
19 Speed

12. WEDGE Id RESISTOR
Resistor Menu
Machine ID Resistor
‘R1’

13. Alert / Shutdown Codes

14. PDA Service Tool

15. PDA SERVICE MODULE PDA SERVICE MODULE PALM PILOT
Application: Large Compressors
Purpose: Service tool plug-in module for PDA device
Required for servicing compressor/controller
Features: Extract shut down / alarm history
Read controller fault codes
Read/capture SAE J1939 engine data
Down load controller software
PLUG IN MODULE
Cable connector

16. MACHINE PARAMETER INTERROGATION
SERVICE OPTIONS
INTEROGATION
TOOLS

17. General Machine Wiring Schematic Control Panel Wiring Schematic
Wiring Diagram - Emu General
General Machine Wiring Schematic
Control Panel Wiring Schematic
Cummins Engine Schematic

18. Wiring Diagram - Emu General

19. Wiring Diagram - Emu General

20. Index ‘1’….

21. Index ‘2’….

22. CONNECTOR P1 -WEDGE

23. CONNECTOR P4 - CONT. PANEL

24. CONNECTOR P3 - OEM

25. CONNECTOR P2 - ECM

26. CONNECTOR J6

27. CONNECTOR R5

28. CONNECTOR P10
Note
If connection problem error code 71 will be displayed on wedge controller - (Can Bus error)

29. CONNECTOR P7 - RAD LEVEL

30. FUSE BOX LOCATION
Fuse box

31. LOAD SELONOID
LOAD
SELONOID
& VALVE

32. UNLOADER COMPRESSOR
B2 Unloader
air compressor

33. CONNECTOR U2 - RAD LEVEL SW

34. WW 226mm AIREND - OIL PRESSURE SWITCH
Airend Oil Pressure Switch ‘S8’

35. WEDGE Id RESISTOR
Resistor Menu
Grey
White
Machine ID Resistor
‘R1’

36. ‘R7’ CAN TERMINATOR

37. WIRING DIAGRAM -CONTROL PANEL

38. WIRING DIAGRAM -CUMMINS ENGINE