ECU-C Installation/User Manual
13
3.Hardware Installation
Please ensure that the ECU-C is in a power off state when installing
the transformer.APsystems can provide the current transformers,
please contact us or our distributors.
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 14
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.