HV DTemp Measurement System – Product Description
User Guide
12
Version 01.00 // 2021
3.1 Connections and components
3 1 1 HV DTemp-P central unit
The HV DTemp-P central unit features two galvanically isolated inputs which allow tempera-
tures to be recorded from two different high-voltage areas (HV batteries).
A maximum of eight controllers can be connected to the measurement inputs of an HV DTemp-P
central unit. The controllers can be distributed to both measurement inputs or connected to
only one of them. A controller has 16 digital inputs for a maximum of 64 measuring points. Thus,
up to 512 (8 x 64) measuring points can be connected to one HV DTemp-P central unit.
→ See chapter 3.1.2 "HV DTemp-M controller".
Communication between the HV DTemp-P central unit and the configuration software or
data acquisition system is performed via CAN bus. Each measuring point is assigned its own
CAN ID and this is documented in a DBC description file. The temperature sensors can thus
be uniquely assigned and identified. Data transmission on the CAN bus is potential-free in
"free running" mode.
Fig. 3-2: HV DTemp-P central unit, front view
1. M6 threaded hole for ground cable connection (
→
chapter 4.3.2.3 "Ground connection"
)
2. Measurement inputs (
→ chapter 4.3.2.2 "8-pin LEMO Redel multi connector"
3. LED Indicators for measurement inputs 0 - 7 (
→
chapter 3.2.2 "Measurement input LED
)
4. CAN/power supply connectors (
→ chapter 4.3.2.1 "CAN sockets"
)
5. CAN bus indicator LED (
→ chapter 3.2.1 "CAN bus LED indicator"
)
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