I+ME ACTIA BMS Master 4, Hardware Manual, Page: 31 / 76

Hardware Manual
BMS Master 4 / 4.5
Ref.: IR14417 A 15.01.2018 Page 31/76
termination, necessary only with long cables as the MASTER-CAN2-interface has termination
inside. For CAN-H and CAN-L usage of twisted pair cables is required. The shield is connected
to the BMS Master only.
3.2.3.3 C
ONNECTING THE
S
ENSOR FOR
V
OLTAGE
M
EASUREMENT
For voltage measurement the 2-pole MicroFit-connector is used. The two pins are shorted
internally. The voltage measurement uses one side of the shunt as reference voltage.
3.2.3.4 T
ECHNICAL
S
PECIFICATION
IVT-B-S
ENSOR
Environmental Temp Range -40 / +85 °C
Current Meas. Range nominal ± 320 A
Current Meas. Range extended ± 1500 A
Offset ± 50 mA, ± 250 mA ext.
phys. Resolution 10 mA nominal, 40 mA extended
Voltage Meas. Range nominal ± 620 V
Offset ± 100 mV
Physical Resolution 30 mV
Temperature Meas. Range -40 / +105 °C
Physical Resolution 0.1 °C
For further and detailed information on the IVT-B-sensor refer to the product specification
by Isabellenhütte.
The maximum current depends on the mechanical position and the heat deviation
conditions. The connected high current cables are the heat sink for the shunt and the
connections have to be made with a minimum contact resistance. The cable has to be over
dimensioned to achieve proper heat deviation.
The inner heat resistance is 2 K/W, the resistance is 100 µ
Ω
and the nominal power is
15 W. Be sure even under worst case conditions not to exceed a shunt temperature of
85°C.