Functions and parameters
Functions
Publication No. Date Valid from serial number T-code
261828-040 2008-08-21 6051502 815, 816
© BT  Repair Manual  RRE140/160/180/200/250  4 –   45
General
The transistor regulators have a green LED to indicate OK status. On 
start-up, the LED flashes twice and then stays on. 
The basic software for controlling the drive motor, pump motor and var-
ious hydraulic valves, is stored in the transistor regulators.
The transistor regulators have dedicated internal monitoring of CAN 
communication, DC voltage levels, their own temperature and motor 
temperature.
Any malfunctions are registered by the transistor regulators, and the 
information is sent via CAN to the MCU, which registers the error code 
and displays it on the CID. Once an error is detected, it is also signaled 
by the LED going out or starting to flash.
The transistor regulators are replaceable and can be reprogrammed 
using TruckCom via CAN.
4.8.4 Start-up
The truck checks the system by testing the inputs, outputs, voltage and 
communication, etc. 
4.8.5 Shutdown
Shutdown is initiated by pressing the red "Logout" button. Subsequent-
ly, the main contactor must open before the key contactor.
The check that the main contactor opens is made by activating the ACT 
transistor regulator, when stationary, to load the battery circuit. If the 
contactor is open, the voltage is slightly reduced and the condition for 
shutting down the electronics and opening the key contactor is met.