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General Information
This manual will give a brief overview of each component of the system as well as basic steps to troubleshooting. This manual will not list truck specific components or wiring as those change for every vehicle type.
CPC3 is a drop-in replacement of the previous CPC systems. CPC3 system is an upgraded system for C32, CPC and CPC2, as well as all the variations and revisions of each one. Due to this, CPC3 may vary depending on what the original system was and how it
was changed over the years and what options were originally installed.
If you have a problem with this system, please email/call Schwing Service Techs, who will email the Electrical Engineering Team with what the problem was and the fix for it. This allows us to evaluate what caused the issue and update our procedures as well
as this troubleshooting guide.
This manual is not 100% and is only meant to give general steps on how to troubleshoot the system. As more issues arise and data is given to the Electrical Engineers, we will continually update this document to provide as many options as possible.
System Overview:
Functions:
•
All C32, CPC and CPC2 functions that the unit had previously.
•
Shows PTO, Pump and Boom Hours
•
Easy Troubleshooting screens
•
Maintenance Switch – Gives constant power to the Dump Valves
•
Easy Teach mode operation
SCC Fault Isolation Manual
Page 1 of 11
Schwing CPC3 Fault Isolation Manual
6/03/2020
Rev. 01 9/20/2021
Common SAI Numbers:
98455320
Schematic CPC3
98458772
Full Panel Assembly
98391422
PLC
98465074
PDM
98395784
2.8" Display
98455321
Rear Keypad
98463187
Local/Remote Switch Assembly
98457837
Panel Harness
98457028
I/O-E Harness
98465743
Scanreco Transmitter
98461655
Scanreco Receiver
98465556
Oil Temp Harness
98462248
Oil Temp Sensor
98462245
Oil Pressure Sensor
98465557
Area Lights Jumper (Main Connector)
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Summary of Contents for Schwing CPC3
- Page 1 If you have a problem with this system, please email/call Schwing Service Techs, who will email the Electrical Engineering Team with what the problem was and the fix for it.
- Page 2 SCC Fault Isolation Manual 6/03/2020 Page 2 of 11 Rev. 01 9/20/2021 Primary PLC: This is the brain of the system. This controls all the inputs and outputs of the system. • This module has 32 inputs and 48 outputs and is IP67 with all connectors connected. •...
- Page 3 Rev. 01 9/20/2021 Homepage with all icons Homepage without options Messages are 2.8” Display: displayed here • Displays all CPC3 information • Simple M12 connection behind display Turns green when • Turns on with PTO. Icons: Dirty Oil Filter, properly linked •...
- Page 4 SCC Fault Isolation Manual 6/03/2020 Page 4 of 11 Rev. 01 9/20/2021 Power Distribution Module (PDM): • One location for all fuses, relays and circuit breakers. • This distributes power to all components. • All Primary circuits have either self-resetting circuit breakers or manual resetting circuit breakers.
-
Page 5: Maintenance Switch
Turns on all Dump Valves regardless of E-Stops. • This switch is only intended as a backup incase a part of the CPC3 system has failed and is preventing normal operation. o The unit should be fixed immediately to prevent damage to equipment and personnel. - Page 6 If you do not enter a password, you can still enter the screen, but you will not be able to change any values. ▪ Entering the customer password (Default “1234”) allows you to change the values or restore to Schwing Factory Settings. ▪...
- Page 7 SCC Fault Isolation Manual 6/03/2020 Page 7 of 11 Rev. 01 9/20/2021 How to determine the PLC Version: 1. If your system is not operating, it is best to find the version of the other component that is working (PLC or Display). This information can help to make sure the version you put into the replacement part is compatible. a.
- Page 8 “Operate Oil Cooler Manually” If this error comes up the CPC3 system has determined an error in the Oil Cooler System. Either the D+ signal is not working, or the Oil Temp sensor is not working. Run the Oil Cooler manually.
- Page 9 NO: The system is not allowing throttle control. Check to make sure your e-stops are clear and you are properly setup. 3.1.2. YES: The system is requesting the vehicle to throttle up and down but it is not. The issue is either with the vehicle or with the harness between the vehicle and the CPC3 system.
-
Page 10: System Does Not Turn On
9. Hopper Light does not work 9.1. The Hopper Light has constant power and is not controlled by the CPC3 system. Check fuse F11 then troubleshoot circuit using schematic. The ground is provided from the chassis frame. 10. System does not turn on 10.1. - Page 11 “[Boom/Remote/Rear] E-stop Error” This error comes up when CPC3 senses a problem with the E-Stop circuit. 14.1. Single circuit E-Stop system (Uses two wires at each e-stop) one of the wires is shorted to ground. Trace the indicated system and look for the short.
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