I+ME ACTIA BMS Master 4, Hardware Manual, Page: 15 / 76

Hardware Manual
BMS Master 4 / 4.5
Ref.: IR14417 A 15.01.2018 Page 15/76
3.1.3. I
NTERFACES
3.1.3.1 S
UPPLY
,
CONNECTOR
CN101
The BMS MASTER is supplied via connector KL30 (+) and KL31 (–) with typ. 12 VDC or 24
VDC, e.g. a vehicle’s board net; the connections are polarity proof and protected against
overvoltage transients with a varistors, suppressor diodes and against overload with two
5A Thermo-Fuses.
Connector pin assignment / View on the pins:
1 KL30 4 KL15 7 KL31
2 KL30 5 KL15S 8 KL31
3 KL30 6 EMSRET 9 KL31
Nomenclature:
KL30 Plus, 9 … 28 VDC;
Power requirement depends on output loads, maximum 11.5 A
KL31 Minus, Ground, reference level – for all loads connected to outputs SWOx
(relays, valves, motors etc.)
Wake up
„Plug-IN“
(KL15)
Signal to switch on the device, +9 … 28 VDC; push-button function - the
device may switch off itself, e.g. by a CAN command
active @ > 8 V, input resistance 32 kΩ
Wake up
„Drive“
;
(KL15S)
Signal to switch on the device, +9 … 28 VDC; switch function - the device
cannot switch off itself
active @ > 8 V, input resistance 32 kΩ
EMSRET Supply of the Relay Outputs SWO5 … 8;
has to be connected to KL30 either directly or via a contact e.g. operated
with relay output REL1A/B
Without connection to KL30 the outputs SWO5 … 8 are out of function
Remark:
To switch ON or OFF the BMS Master use only the Kl15 or Kl15S signal. After switch OFF
with Kl15 / Kl15S the electronic control unit is running up to 10 seconds. In this time are
important data stored in non volatile memory.
Should the BMS complete disconnected from the power supply, at first the Kl15/Kl15S is
switched OFF and then wait 10 seconds. After that the clamp 30 can disconnected from
the BMS Master.
To switch OFF with clamp 30 or not wait 10 seconds can to cause inconsistent data at next
session (wrong State of charge).
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