User Manual

RS 485 Connection Steps:
1) Firstly unscrew all screws from the 485 port.(PH1 cross screwdriver .
torque:0.8±0.1Nm)
2) Prepare a communication cable and trip the insulation from it.
3) Let the communication cable pass though the waterproof connector, then
insert it into the connector following the PIN definition rule.
4) Crimp the connector with the crimping plier.
5) Insert the cable into the RS485 port of the inverter, and tighten the
waterproof connector.
DRM function (for AS4777) is provided to support several demand response
modes by giving control signals as below. The user should short circuit between
1 and 2 and cooperate with external equipment when using it.

1
8
DRM
Installation
DRM shares the terminal block with RS485/Meter communications.
The connection steps of the DRM, user can refer to the above (b) RS485
connections.
Note: Only DRM0 is available now, and other functions are being developed.
PIN
Definition
1
X
4
X
7
RefGen
5
X
8
X
2
Com/DRM0
3
GND_COM
6
X
Ø
27
Hand tighten. torque: 1.2±0.1Nm
CT Connection Steps:
• Do not place the CT on the N Wire or the earth wire.
• Do not place the CT on the N and L wire simultaneously.
• Do not place the CT with the arrow pointing to the inverter side.
• Do not place the CT on the non-insulated wires.
• Do not use the wire over 25m.
NOTE!
Rj45 connector
Screw cap
CT clamp
CT structural decomposition
communication line
1. Insert the Rj45 connector of CT into the Meter port on the inverter, and screw
down the screw cap tightly.
3. Make sure the current sensor is installed in the right direction: The arrow
on the current sensor must point to the public grid.
2. Clip the CT clamp on L line from the home main meter box side.
CT clamp
L line from the home main meter box side.
arrow point to the public grid
public grid side
inverter side
Step 2/3
Installation
26
Rj45 connector
Screw cap
485 port on the inverter
Step 1