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The distributed control system is based on two micro-controllers:
SATREC-CGT (General Traction Controller) and SATREC-CVT (Variable
Voltage Regulator Controller); it is a flexible command system
for electrical traction equipment for tramcars and light railcar.
The system is build within two or three 10" racks, every
one of them having 6 electronical cards connected through a mainboard.
The serial communication between the modules is RS-485 type. The
CGT module is placed near the tramcar's cabin, and the CVT modules
are included in every VTCI unit mounted on the vehicle.
| CGT | CVT | |
| - speed and acceleration digital regulator | - 1 or 2 motors current digital regulators | |
| - consumed/recovered energy counter | - recuperative/rheostatic electrical brake control | |
| - digital traction current control |
| CGT | CVT | |
| - 2 x 16 digital inputs / 16 digital outputs | - 8 intrări / 8 ieşiri digitale | |
| - 3 digital speed counters | - protecţii la supracurent şi supratensiune | |
| - two-digits display for error codes | - comandă de puls prin fibră optică | |
| - pulse synchronization for VTCI | - sincronizare externă/internă a pulsului VTC | |
| - operating with 1 or 2 CVT units |