RS 485 is one standard communication interface which can transmit the real data
from inverter to PC or other monitoring equipments.
a. RS 485
RS 485/Meter/DRM
b. Meter(optional)
The PIN de nitions of RS 485/Meter interface are as below.
1
8
RS 485 Connection Steps:
1) Firstly unscrew the screw 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 485 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
24
Installation
Installation
With this single phase meter working together with the X1 series, you can:
(1) Monitor the energy to grid and from grid through the whole day.
(2) Achieve the export control function with a higher accuracy.
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
RefGen
4
X
7
X
5
X
8
X
2
Com/DRM0
3
GND_COM
6
X
Ø
X1
Electrical
grid
Electric meter
bidirectional
Load
X1 series inverter
X1
25
PIN
Definition
1
RefGen
4
Meter_A/
7
E_Stop
5
Meter_B/
8
GND_COM
2
Com/DRM0
3
GND_COM
6
X
485_A
485_B
Hand tighten
.
torque
:
1.2
±
0.1Nm
Single phase meter
