117 THERMOCOUPLE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Accept 5-32 V DC power (12 or 24 V DC nominal) Over voltage capability is 32 V DC for 1 hour @ 85°C 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; isolation voltage is 1500 V AC (rms) or 2550 V for 1 sec 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 filtering (Third party testing is being pursued) ENVIRONMENTAL SPECIFICATIONS Encapsulated in a rugged aluminum housing with watertight Deutsch connectors (IP65 rating) Operating temperature range -40 to 85°C (-40 to 185°F) (for ambient temperatures exceeding 85°C, the temperature scanner may deviate in accuracy an additional ±1°C) The ambient storage temperature range is -50°C to +120°C It is protected against 95% humidity non-condensing, 30°C to 60°C NETWORK COMMUNICATIONS INTERFACE Incorporates an SAE J1939 communications port with variable slew rate on the transceiver to accommodate different CAN (SAE J1939) connections (capable of working on both the EMCP 3 GSC Primary and Accessory J1939 data links) Node address is auto configurable as per J1939-81 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 3 GSC or Service Tool when the GSC is not available; synchronization time is accurate to within 1 sec Includes a watchdog timer to atomically 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 the Caterpillar Service Tool over the J1939 network
17 OPTIONAL Modules
