Solax M1-40 Quick Installation Manual

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1 Product Introduction
M1-40 is a single-phase meter designed for electricity monitoring
and power metering in PV system and other sceanrios. It is small
in size and easy to use, and offers precise power metering.
A
B
D E
C
A
Figure 1-1 M1-40 appearance
Table 1-1 Description of meter appearance
No. Type Marking Definition
UL terminal, connected to the L wire
L
of the grid
A
UN terminal, connected to the N wire
N
of the grid
Current input terminal, connected to
I*
the I* wire of CT
Terminal
B
Current output terminal, connected
I
to the I wire of CT
A RS485 terminal A
C
B RS485 terminal B
Pulse indicator, flashes when the
D Indicator
meter is working normally
Function
E Used to switch the display item
→
button
2 Scope of Delivery
A B C
1 × M1-40 1 × 2m CT 1 × 5m COM cable
3 Typical Networking Diagrams
The following diagrams use European TN-S for example, and are for reference only.
Inverter
COM/Meter
485A 485B
The meter can also work with Wi-BR to transmit data within up to 200 m horizontally and 20 m vertically*.
Inverter
Meter/COM
485A 485B
D
Document
Note: The transmission data of Wi-BR comes from test results conducted in SolaX laboratories.
AC
L N
L N
Load
Figure 3-1 Networking through RS485 cable
AC
Wi-BR
APXXXXXXXXXXXX
Power
distribution box
AP
L
N
485A 485B
L N
L N
Load
Figure 3-2 Wireless data transmission through Wi-BR
SolaX Meter M1-40
Quick Installation Guide
Power
distribution box
I *
I
L
N
INV/Load Grid
Grid
Main breaker
N
L
Wi-BR
STAXXXXXXXXXXXX
Power
distribution box
STA
485A 485B
I *
I
N
L
INV/Load Grid
Grid
L
N
Main breaker
N
L
L wire
N wire
I* wire
I wire
RS485A wire
RS485B wire
PE wire
L wire
N wire
I* wire
I wire
RS485A wire
RS485B wire
PE wire