GASKET 2265613 - Caterpillar

Illustration 1 g02278314Thermocouple Specifications
Electrical Specifications
Accept 5-32 VDC power (12 VDC or 24 VDC nominal)
Over voltage capability is 32 VDC for 1 hour at 85° C (185° F)
Power supply inputs are protected against transient surges and short circuits and are isolated from I/O
Three-way isolation is provided for the CAN line, inputs, and power supply
Burden is limited to less than 200 mA, inrush not to exceed 800 mA
Common mode rejection is -80 db@ 5V p-p (50-60 Hz)
Common mode input range is 4 V minimum
Designed to meet relevant European standards for EMI/RFI/Immunity without the use of external filteringNetwork Communications Interface
Capable of operating on the EMCP 4 accessory CAN 2 data link
Node address is auto configurable
Optical isolation is provided for the CAN line
Retains current date and time relative to synchronization every 24 hours (or upon boot up) with equipment system time via an explicit command from the EMCP 4 or Cat ET when the GSC is not available. Synchronization time is accurate to within 1 sec
Includes a watchdog timer to automically reboot should the microprocessor lock
Module operates normally with loss of communication link, retaining configured values and error codes in non-volatile memory
Configuration and firmware updates are accomplished with Cat ET over the CAN network
Reads up to 20 type "J" or "K" thermocouple inputs
Cold junction compensation is provided
System scans all 20 channels in 2 seconds (100 ms/channel)
Overall drift with temperature is 0.015% per degree Celsius of span (maximum)
Module is fully functional during configuration and communications
Parameter values and diagnostic error codes are retained when the modules are de-energized
Open-circuit and short-circuit diagnostics are supported
Can be mounted directly on the generator set panel or remotelyTemperatures are configured to indicate the SAE J1939 SPN to be transmitted by that temperature input. Suspect Parameter Numbers (SPN) for configuration of temperature inputs are customer-specific.Resolution is set for one-byte parameters to have a resolution of 1 degree Celsius per bit. The range is set for −40° C (−40° F) to 210° C (410° F). Two byte parameters have the resolution of 0.03125 degrees Celsius per bit. The range is set for − 273° C (−459° F) to 1735° C (3155° F).Thermocouple Wiring
Illustration 2 g02278333
Connector Contact Description
(1) Power
(2) CAN High
(3) CAN Low
(4) Ground
(5) Shield
(6) Not Used
(7) Not Used
(8) Not Used
Illustration 3 g02278334
Thermocouple Sensor Wiring
Thermocouple Configuration
The thermocouple module is field programmable using Cat ET. The thermocouple module is flash programmable to update software using Cat ET.
Illustration 4 g02306513The service tool software must be installed on a Windows PC. The communication adapter must be connected between the PC and the CAN data link on which the target thermocouple module is connected. When connecting the thermocouple module, the user will first see the "ECM Summary" screen shown in Illustration 4.The service tool configuration tool contains set points for configuring the thermocouple module identification, as well as the thermocouple inputs.Note: "ECU Instance #1" is reversed for the accessory data link (CAN 2), while "ECU Instance #2" is reserved for the primary data link (CAN 1).
Illustration 5 g02306518Illustration 5 shows the ECM identification parameters list. This list shows the ECM