Victron CAN bus temperature sensor

The Victron Energy CAN bus temperature sensor (MPN ASS000200100) is a battery temperature sensor for the Buck-Boost DC/DC converter series and an important accessory when connecting these to an LFP lithium battery. Temperature monitoring is necessary when charging LFP lithium batteries at low temperatures. The charging current of a lithium battery must be reduced when the battery temperature drops below 5 degrees Celsius, and the charging current must be stopped when the temperature drops below zero degrees Celsius. The CAN bus temp. sensor takes care of this. It measures the temperature of the lithium battery and sends it to the buck-boost DC/DC converter. The buck-boost DC/DC converter reduces or stops the charging process when the battery temperature becomes too low.
In addition, the sensor can also be connected to the temperature sensor port of a Multi or Quattro, allowing the Multi or Quattro to reduce or stop charging if the battery temperature is too low.

Features

• Battery temperature monitoring
• Supply voltage 4.38 V/DC
• Current consumption 60 mA (at 13.6 V)
• Output for heavy user shutdown
• LED status indicators
• CAN bus for control purposes and step-down/step-up converters or Quattro, MultiPlus, and Venus GX communication
• Alarm output

Function

The CAN.bus temperature sensor is an accessory designed specifically for all models of step-down/step-up DC-DC converters. The temperature is transmitted to the converter via a communication cable using the CAN bus communication ports. The CAN.bus temperature sensor can also be used in combination with any Victron Multi or Quattro. This allows the charging voltage to be regulated according to the low temperature.
For LiFePO4 lithium systems, this sensor is required in many system applications due to the fact that LiFePO4 batteries must not be charged when they are too cold. Charging lithium batteries at or around freezing point will cause permanent damage to the cells.

Technical data

• Supply voltage: 4.36 V/DC
• Current consumption: 60 mA (at 13.6 V)
• Alarm output (pin 5): 350 mA Open connection (switches to GND/ground)
• Weight: 12 grams
• Dimensions: 57.6 x 40 x 15.8 mm (including connections)

Scope of delivery:

1x Victron Can-Bus temperature sensor (MPN ASS000200100)
1x user manual