TWIN-CU is a latest generation electrical device suitable for controlling double line lubrication systems in which you want to monitor and control all the functions. All the functions and program choices are made via the front panel controls of the PLC on the outside of the closing door. The electrical equipment operates by setting the machi - ne pause or pulse time and a working time. The cycle consists of a pump start-up signal reception from the pressure switch line 1 or line 2 for inversion. If this si - gnal is not received, an alarm is generated . Start-up is also possible from an external pulse.