CAN topology
The CAN bus is looped through the battery. The user must take care the battery is integrated into the
system as shown in the block diagram. When doing so, ensure the terminations are tted with terminat-
ing resistors (overall resistance 60 Ohms).
DAMAGE
It is recommended that screened twisted pair cables are used. Ensure the CAN cables are laid
correctly so no interference is generated on the CAN bus.
Triggering the main
contactor
There are various ways to trigger (wake up) the battery, see the following table:
ValueName
Description
1
Key & CAN
Starting signal terminal 15 (ignition) AND CAN message (CAN-Wake-UP).
2
Key
Start signal terminal 15 (ignition) (=standard arrangement).
In the standard parameters, variant 2 (key) is activated. Optionally, another start-up variant can be
congured - please declare this when ordering the battery.
6.1 Safety devices and performance limitations
Single-pole switch-off
A power relay is installed in the positive wiring path; this allows the battery to be switched off.
The relay is tted with an AUX contact which allows the switching status of the relay to be checked. If
the actual switching status (NO/NC) does not match nominal switching status, the BMS detects an error
and disconnects the battery by means of the main relay.
Short-circuit protection
A fuse is installed in the positive wiring path; this provides protection against a short circuit. The fuse is
rated at 250 A.
Interlock
The purpose of the interlock line in the system is to ensure the correct connection of the plug connector
to the overall system. Internally within the battery (within the connector) there is a bridge between pin
14 and pin 15, which can be used for integration of an interlock line within the system.
HAWE Hydraulik SE
B 6130 - 02-2022 - 1.0en
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