A PPENDIX A: CAN ENABLED BMS
The ability for the WS500 Alternator Regulator to communicate with BMS devices using the CAN (Control Area Network) provides for a higher level of integration and reliability than is possible using only legacy methods (e.g., Charge Enable wire), as well as installation simplification via remote instrumentation of battery current, voltage, and/or temperature (BMS support dependent). This appendix provides details of optional CAN protocols supported by the WS500 regulator. Refer to the command $CCN: on page 55 and how the ‘ Enable_ALT_CAN’ field is defined.
WARNING: Not all BMS devices provide advanced notification of pending DC disconnect. It is up to each installer/designer to verify the details of the BMS and its integration with the Wakespeed WS500 Advanced Alternator Regulator to assure a reliable system. It is suggested that at minimum a 2 second warning be issued by the BMS before any actual physical disconnect occurs.
CAN based BMS integration can be a challenging concept at first, though the end result does allow for a simpler and more robust overall system install. If the installer has any questions about what is contained in here, or the suitability of a given BMS, send an Email to: support@TJCMicro.com
NMEA2000_RAT: Should the WS500 Alternator Regulator look for a NMEA2000 device to supply remote sensing of battery Amperage and Temperature via PGN: 127508 and PGN: 127506 for SOC and SOH. To reduce confusion in the NMEA2000 network, if Enable_NMEA2000_RAT is set = yes, and the sending of PGN 127508 messages for the Battery Instance will be suppressed. When using NMEA2000_RAT mode, great care is needed in the overall setup with regards to the Battery Instance. Some systems ignore this field and set all devices to Instance=0, which will cause great confusion.
Example product(s) include:
Maretron DCM100
Victron Smart Shunts
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