Solax M3-40-Dual Quick Installation Manual

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1 Product Introduction
M3-40-Dual is a three-phase meter designed for electricity monitoring
and power metering in PV system, energy storage plants and more.
It supports two channels so that you can monitor up to 2 power
generation equipment at the same time.
D
Figure 1-1 M3-40-Dual appearance
Table 1-1 Description of meter appearance
No. Type Marking Definition
UL terminal, connected to the L wires of
L1, L2 and L3
the grid
A
UN terminal, connected to the N wire of
N
the grid
CT1 BLACK Current input terminals, connected to
B
the batch of CTs
CT2 GREEN
Terminal
A/A2 RS485 terminal A
B/B2 RS485 terminal B
C A1-PIN4/A2-
RJ45 PIN4: RS485 terminal A
PIN4
B1-PIN5/B2-
RJ45 PIN5: RS485 terminal B
PIN5
1
Pulse indicators, flashes when the meter
2 is working normally
D Indicator
Function indicator, flahses when the
Fn
meter phase sequence is being adjusted
• Enter the parameter setting interface
SET • Confirm the selection
• Shift the cursor (when inputting digits)
ESC Exit from the current interface
Function
E
button
• Go to the next item
→
• Increase the value
• Go to the next item
←
• Decrese the value
2 Scope of Delivery
A B
1 × 7-pin
1 × M3-40-Dual terminal block
E
D
1 × 5m COM cable
3 Typical Networking Diagrams
The following diagrams use European TN-S for example, and are for reference only.
B
Hybrid Inverter
C
COM/Meter
485A
E
A
The meter can also work with Wi-BR to transmit data within up to 200 m horizontally and 20 m vertically*.
Inverter
COM/Meter
485A 485B
C
2 × 2m CT batch
Note: The transmission data of Wi-BR comes from test results conducted in SolaX laboratories.
Document
RS485-1
Power
distribution box
AC
485B
L1 N
L1 N
L2
L2
L3
L3
L1 N
L2
L3
Load
Figure 3-1 Networking through RS485 cable
Wi-BR
Power
AC distribution box
APXXXXXXXXXXXX
L1
L2
Power
AP
distribution box
L3
N
485A 485B
L
N
L1
N
L2
L3
Load
Figure 3-2 Wireless data transmission through Wi-BR
Third-party
Inverter
AC
INV
Grid
L1 L2 L3 N
INV/Load
Main breaker
Wi-BR
APXXXXXXXXXXXX
STA
485B
485A
N
L3
INV/Load
N
L2
L1
L
Main breaker
SolaX Meter M3-40-Dual
Quick Installation Guide
L1 wire I* wire
L2 wire I wire
RS485A wire
L3 wire
RS485B wire
N wire
PE wire
Grid
Grid
N
L3
L2
L1
L1 wire I* wire
L2 wire I wire
RS485A wire
L3 wire
RS485B wire
N wire
PE wire
Grid
Grid
N
L3
L2
L1