EPEVER MT75 User guide

Remote Meter

USER MANUAL

MT75

Contents

1. Safety Instructions ................................................................ 1

2. Overview .............................................................................. 2

3. Appearance .......................................................................... 3

4. Accessories .......................................................................... 4

5. Installation Instructions ......................................................... 5

6. Indicator Instruction .............................................................. 7

7. Button Instruction.................................................................. 8

8. LCD Display ......................................................................... 9

9. Error Codes .......................................................................... 11

10. Specifications ..................................................................... 13

11. Dimension .......................................................................... 15

12. Recommended Applications ................................................ 16

12.1 Standard Application .................................................... 16

12.2 Upgrade Application .................................................... 17

12.3 Advanced Application .................................................. 18

12.4 Pro. Application ........................................................... 20

1

1. Safety Instructions

 Please keep this manual for future reference.

 Please read this manual and safety information carefully before

using the product.

 Keep the product away from rain, exposure, severe dust,

vibration, corrosion, and intense electromagnetic interference.

 Please avoid water, and other liquids enter into the product.

 There are no user serviceable parts inside the product. Do not

disassemble or attempt to repair it.

2

2. Overview

MT75 is a new generation of remote meter which can monitor the

EPEVER solar charge controller and inverter on one screen at the

same time. This product provides multiple solutions to fit different requirements from off-grid users.

Features:

 Dual RJ45 communication ports

 4.7-inch LCD screen, real-time dynamic display of system data

 Visually error codes, timely notification of warnings and faults

 Load ON/OFF button to control the load output directly

 Dry contact output and enable switch design

 Remote control inverter ON or OFF

 Friendly connect with different EPEVER devices

3

3. Appearance

❶

Decorative shell

❽

Battery parameter button

❷

PV indicator

❾

PV parameter button

❸

Battery indicator

❿

Base (optional)

❹

Load indicator

⓫

Dry contact interface

①

❺

LCD

⓬

RS485 port 1(RJ45)

❻

Load ON/OFF button

⓭

RS485 port 2(RJ45)

❼

Load parameter

button

⓮

Dry contact

enable switch

①

4

① Working Principle:

Dry

contact

Dry contact

enable switch

+5V

GND

Dry contact

Interface

Dry contact rated value: 5A/30VDC; Max. value: 0.5A/60VDC

4. Accessories

5. Installation Instructions

 Before Installation

1. Check whether the ID of the solar controller is 1; if not, please set it to 1.

2. Check whether the ID of the inverter is 3; if not, please set it to 3.

3. Wall installation or surface mounting installation is optional.

 Wall Installation

Step 1: Locate and drill screw holes based on the frame mounting

dimension (175x50mm), and erect the plastic expansion bolts. Step 2: Use four M5 self-tapping screws to fix the frame. Step 3: Remove the decorative shell.

Step 4: Use two M4 pan head screws to mount the MT75 surface on

the base.

Step 5: Install the decorative shell.

6

 Surface Mounting Installation

Step 1: Locate based on the installation size (176mm), and drill screw

holes (no smaller than 158.2x85mm). Step 2: Remove the decorative shell. Step 3: Use two M4 pan head screws to fix MT75. Step 4: Install the decorative shell.

7

6. Indicator Instruction

Indicator

Color

Status

Instruction

Green

ON solid

PV is charging

Green

OFF

No PV charge

Green

Fast

flashing

PV over voltage

Green

ON solid

Battery normal

Green

Fast

flashing

Battery over voltage

Orange

ON solid

Battery under voltage

Red

ON solid

Battery over discharge

Red

Slow

flashing

Battery over temperature

Battery under temperature

Controller over temperature

Green

ON solid

Load switch ON

Green

OFF

Load switch OFF

Green

Fast

flashing

System voltage error

Orange

Fast

flashing

8

7. Button Instruction

Button

Operation

Instruction

Click

Display PV parameters in cycle

Click

Display battery parameter in cycle

Click

Display load parameter in cycle

Exit the fault page

Press for 5S

Check error code information

Click

Control the switch of solar controller

and inverter in sync

①

Press for 5S

Clear the total of PV generated power,

total DC load usage, and total AC load

usage

① When the output of the solar controller and inverter is out of sync, click to turn

off all the loads' output at the same time, click again to turn on all the load outputs.

9

8. LCD Display

 LCD Display

Symbol

Definition

Symbol

Definition

PV

charging

PV

no charge

Load ON

Load OFF

 LCD Display Interface

Item

LCD Display

Definition

PV

PV voltage

PV current

PV power

Total PV generated power

Battery

Battery voltage

10

Battery current

Battery capacity

Battery temperature

DC

Load

DC load voltage

DC load current

DC load power

Total DC load usage

AC

Load

AC load voltage

AC load current

AC load power

Total AC load usage

AC load frequency

11

9. Error Codes

 Solar Controller Error Codes

Indicator

Color

Status

LCD

Code

Green

Fast

flashing

Battery over

voltage

Orange

On

solid

——

Battery under

voltage

Red

On

solid

Battery over

discharge

Red

Slow

flashing

Battery over temperature

Battery under

temperature

Controller over

temperature

Orange

Fast

flashing

System voltage

error

Green

Fast

flashing

Green

Fast

flashing

PV over voltage

Green

Slow

flashing

Load short circuit

Green

Slow

flashing

Over load

Note: When the battery voltage is equal to the low voltage disconnect

voltage (LVD) point of the controller, the output of the controller and inverter will be turned off.

12

 Inverter Error Codes

Indicator

Color

Status

LCD

Code

Green

Slow

flashing

Output short

circuit

Output over load

Output voltage

abnormal

Busbar over

voltage

Input over

voltage

Input under

voltage

Input over current

Inverter over

temperature

13

10. Specifications

Item

MT75

Compatible

products

Controller

XTRA-N series/TRIRON series/ Tracer-AN series/Tracer-BN series

Note: Required cables for the above

products are shipped with MT75.

iTracer-AD series/iTracer-ND series

Note: Required cables for the above

products need additional purchase.

Inverter

Power series(1kw or above, suitable for

application 1/3)/IPower-Plus series/

NPower series/SHI series

Voltage

supply

5VDC

Power

supply

methods

Solar controller communication port

Inverter communication port

LCD visual

angle

12' clock

LCD

backlight

Yes

Installation

methods

Wall installation

Surface mounting installation

14

Self-

consumption

14mA/5V(no backlight)

26mA/5V(backlight)

Working

temperature

-20℃～+65℃

Storage

temperature

-20℃～+80℃

Dimension

193×94.6×48mm（base）

193×85.2×23mm（no base）

Mounting

size

175×50mm(base)

176mm(no base)

Mounting

hole size

φ5mm(base)

φ4.3mm(no base)

Net Weight

0.29Kg(base)

0.22Kg(no base)

15

11. Dimension

16

12. Recommended Applications

12.1 Standard Application

1) Advantages

MT75 monitors the operational status and error codes of the solar controller and inverter at the same time, also controls the AC load and DC load output by one button directly.

2) Connection Diagram

No.

Item

Number

1

Solar controller

1 pcs

2

Inverter

1 pcs

3

MT75

1 pcs

4

RS485 cable

2 pcs

5

PV, battery, AC load, DC load

According to actual

needs

17

3) Operations

1. Connect the two communication ports of MT75 to solar controller

and inverter.

2. Set MT75 dry contact enable switch to OFF state.

3. Must set inverter switch to ON state.

4. MT75 load ON/OFF button will directly control the AC and DC

load output.

12.2 Upgrade Application

1) Advantages

MT75 monitors the operational status and error codes of the solar controller and inverter at the same time. The load ON/OFF button controls the inverter start or stop, which can effectively reduce the loss of the inverter and extend the lifetime of the system.

2) Connection Diagram

No.

Item

Number

1

Solar controller

1 pcs 2 Inverter

1 pcs

18

3

MT75

1 pcs

4

RS485 cable

2 pcs

5

Dry contact connection cable

1 pcs

6

PV, battery, AC load, DC load

According to actual

needs

3) Operations

1. Connect the two communication ports of MT75 to solar controller

and inverter.

2. Connect the dry contact interface of MT75 to the external switch

port of the inverter.

3. Set MT75 dry contact enable switch to ON state.

4. Set inverter switch to OFF state.

5. MT75 load ON/OFF button controls the inverter start or stop

remotely.

12.3 Advanced Application

1) Advantages

With the RS485-1M2S module, the MT75 not only can monitor the operational status of the solar controller and inverter, but it also can connect with external WIFI, Bluetooth module, or PC. The parameter settings and operational status monitoring can be collected by phone APP or PC software. MT75 can also control the output of AC and DC loads by one button in this application.

2) Connection Diagram

19

No.

Item

Number

1

Solar controller

1 pcs

2

Inverter

1 pcs 3 MT75

1 pcs

4

RS485-1M2S module

1 pcs

5

WIFI, BT module, or PC com.

cable

1 pcs

6

Mobile phone or PC

1 pcs

7

RS485 cable

4 pcs

8

PV, battery, AC load, DC load

According to actual

needs

3) Operations

1. Connect the main port of RS485-1M2S to solar controller and

inverter.

20

2. Connect the slave port of RS485-1M2S to MT75 and WIFI/BT/PC

com. cable.

3. Set MT75 dry contact enable switch to OFF state.

4. Must set inverter switch to ON state.

5. Set the parameters or monitor the operational status of the solar

controller and inverter by phone APP or PC software.

6. MT75 load ON/OFF button will directly control the AC and DC

load output.

12.4 Pro. Application

1) Advantages

With the RS485-1M2S module, the MT75 not only can monitor the operational status of the solar controller and inverter, but it also can connect with external WIFI, Bluetooth module, or PC. The parameter settings and operational status monitoring can be collected by phone APP or PC software. MT75 can also remotely control the inverter start or stop, which effectively prolongs the system's lifetime.

2) Connection Diagram

21

No.

Item

Number

1

Solar controller

1 pcs 2 Inverter

1 pcs 3 MT75

1 pcs

4

RS485-1M2S module

1 pcs

5

WIFI, BT module, or PC com.

cable

1 pcs

6

Mobile phone or PC

1 pcs

7

RS485 cable

4 pcs

8

Dry contact connection cable

1 pcs

9

Power cable

1 pcs

10

PV, battery, AC load, DC load

According to actual

needs

3) Operations

1. Connect the main port of RS485-1M2S to controller and inverter.

2. Connect the slave port of RS485-1M2S to MT75 and WIFI/BT/PC

com. cable.

3. Connect the dry contact interface of MT75 to the external switch

port of the inverter.

4. Set MT75 dry contact enable switch to ON state.

5. Set inverter switch to OFF state.

6. Set the parameters or monitor the operational status of the solar

controller and inverter by phone APP or PC software.

7. MT75 load ON/OFF button controls inverter start or stop remotely.

HUIZHOU EPEVER TECHNOLOGY CO., LTD.

Beijing Tel: +86-10-82894896/82894112 Huizhou Tel: +86-752-3889706 E-mail: info@epsolarpv.com Website: www.epsolarpv.com

www.epever.com

EPEVER MT75 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Safety Instructions

2. Overview

3. Appearance

4. Accessories

5. Installation Instructions

6. Indicator Instruction

7. Button Instruction

8. LCD Display

9. Error Codes

10. Specifications

11. Dimension

12. Recommended Applications

12.1 Standard Application

12.2 Upgrade Application

12.3 Advanced Application

12.4 Pro. Application