NUT-WING 2758115 - Caterpillar

Table 16
2D Advanced & 3D GRADE System Components Power Supply Relay
Pin Function Wire Number/Color Connected To
1 Relay Common 110/Red Fuse Base Fuse 16
2 Relay Coil 24+ V DC Power Supply 110/Red Fuse Base Fuse 16
3 Relay NC
4 Relay NO 187/Purple 2D Advanced & 3D GRADE System Components 24+ V DC Power Supply
5 Relay Coil Ground F873/Yellow EC520 Controller/R2 CONN GP-C4 ECM/PIN 12 3D System R2-ECM EC520 Software Licenses
Illustration 26 g06157553
Illustration 27 g06184272The 3D R2-ECM communicate with the 3D GRADE display over the Ethernet and the Wi-Fi or over the Ethernet cable only. Depending on the R2-ECM option that was ordered and installed on the machine from factory, the Ethernet and the Wi-Fi option allows the communication with display either using the Ethernet cable (back connector of the display) or wirelessly using the Wi-Fi.The 3D R2 ECM contains the operating software of the 3D system, the required licenses, the 3D Cat project library, the 3D system setting, and calibrations. The 3D project library includes the 3D system geometry and the projects (Office, Design, and the Field) data.The 3D R2 ECM includes an additional IMU sensor to measure the body tilt angle. The additional IMU sensor will require an initial calibration and its values are only used in the 3D system calculation.The IMU sensor communicates with machine ECM over the CAN Bus, and the machine ECM provides the R2 ECM with the values. The machine ECM provides the 3D R2 ECM with the Cat GRADE 2D system calibrations, setting, machine, and linkage dimensions that is calculated and stored on the machine ECM over the CAN bus.The 3D R2 ECM communicates with the RH/LH GNSS receivers, the SNRxxx radio, the alarm, heading, and the tilt bucket sensors over the CAN bus. The 3D R2 ECM also communicates with the light bars using either the CAN bus or the serial port cables. The SNM940 radio communicates with R2 ECM over the Ethernet cables.
Table 17
EC520 Controller/R2 ECM
CONN GP-C4
Pin Function Wire Number/Color Connected To
1 Un-Switched Battery 24+ V DC Power 110/Red Fuse Base/ L1/ F16
2 Ground/GND 235/Black Machine Chassis Ground
3 Serial/C1-RS232_TX N961/Orange Ext.LightBar Option/CONN GM-C3/PIN 3
4 Serial/C1-RS232_RX N958/Pink Ext.LightBar Option/CONN GM-C3/PIN 4
5 CAN High L854/Yellow Chassis CONN GP-C1/PIN 2
6 CAN Low L855/Green Chassis CONN GP-C1/PIN 3
7 Machine GRADE System CAN 3 Low Data Y788/Green Machine Primary ECM CONN J1/PIN 26
8 Machine GRADE System CAN 3 High Data Y787/Yellow Machine Primary ECM CONN J1/PIN 7
9 GNSS Receiver CAN Low Data K961/Green RH/LH GNSS Receivers CONN GN-C2/ CONN GL-C2 PIN 9
10 GNSS Receiver CAN High Data K960/Yellow RH/LH GNSS Receivers CONN GN-C2/ CONN GL-C2 PIN 4
11 Key Switch 24+ V DC Power 159/Blue Fuse Base/ L2/ F10
12 3D Power Relay Control Ground Power 187/Purple 3D System Power Reley/CONN GP-C6/PIN 5
Table 18
EC520 Controller/R2 ECM
CONN GP-C5
Pin Function Wire Number/Color Connected To
1 C2- Ethernet 1_Rx- CBL-GP3: 1657/Green TD-520 Display CONN GM-C2/PIN B
2 C2- Ethernet 1_Rx+ CBL-GP3: 1656/White-Green TD-520 Display CONN GM-C2/PIN G
3 Key Switch 24+ V DC Power 159/Blue Fuse Base/ L2/ F10
4 Ground/GND 235/Black Machine Chassis Ground
5 C2- Ethernet 2_TX-