© Cesab 18 – 1 T Code(s): 841, 842, 843
Repair manual: Accessories Model(s): S210, S212, S212S, S212L, S214, S214L, S220D
Publication Number: 7588857-040 Date: 2018-05-01 Applies from serial number: 6384351-
18. Accessories
18.1 Spider expansion unit
The spider expansion unit, called 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 picture 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, multi-pin
contact that manages all inputs, outputs, CAN and power supply signals.
Electronic
card
Spider
Expansion
Unit
CAN bus
function(s)
Motor
Controller
CAN service
connector
Pump
controller
Truck Log
System
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