APsystems ECU-C - 3.6 Current transformer interface

ECU-C Installation/User Manual
12
3.Hardware Installation
3.7 Contactor connection
ECU-C provides two contact driver signal interface, two-way contact signal
interface.
Interface
Interface description
R1L
The first road contactor drives the output L, and is
connected with the power supply interface L1.
R1N
The first road contactor drives the output N, and is
connected with the power supply interface N.
R2L
Second road contactor driver output L, with the
power supply interface L1.
R2N
Second road contactor driver output N, with the
power supply interface N.
A1 A2
First contact feedback signal input, non polarity.
A3 A4
Second way contactor feedback signal input, non
polarity.
Figure 13
ECU-C automatic detection and judgment of the current power grid environment,
through the drive signal interface to control the opening or closing of the
contactor. The feedback signal interface and NO of contactor are often connected
to inform the ECU that the contactor is effectively closed.