Accessories
Spider expansion unit
© BT Repair manual SWE100, 120, 120L, 120S, 140, 140L, 200D 19 – 1
Order no.. Date Valid from serial no. T code
258946-120 2012-08-30 6061850- 841×842×843
19 – Accessories
19.1 Spider expansion unit
The Spider expansion unit, or the SEU, allows the main logic card to
handle a greater number of inputs and outputs. The SEU does not have
its own truck controller logic, which means that a defective SEU can be
replaced without the replacement affecting any truck functions.
The SEU is used for modification of the truck to meet special customer
requirements. .
The figure above shows how the SEU is used to allow a greater number
of functions to be controlled via the CAN bus. SEU has a 42 pin,
multipin contact that manages all inputs, outputs, CAN and power
supply signals.
Electronic
card
Spider
Expansion
Unit
CAN bus
Extra/Customised
function(s)
Motor
Controller
CAN service
connector
Pump
controller
Truck Log
System
https://www.besttruckmanuals.com/
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