EPEVER MT91 Remote Meter User Manual
- June 6, 2024
- EPEVER
Table of Contents
EPEVER MT91 Remote Meter
Safety Instructions
- Thanks for selecting the MT series; please read this manual carefully before using the product.
- Please keep this manual for future reference.
- When you receive the product, check whether there is any damage that occurred in transportation. Contact the transportation company or our company in time for any problem.
- Please read this manual and safety information carefully before installing it.
- 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.
Overview
MT91 is a new generation of remote meters specially designed for the EPEVER inverters. It displays the real-time parameter of the inverter on one screen. Supporting parameter configuration by the button operations, which makes the product suitable for different requirements.
Features
- Dual interface design, friendly connection with the EPEVER inverter and other optional modules
- 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
- Simple installation and friendly operation interface
Appearance
In the real-time interface, long press for 2 seconds to turn off the load(default on); long press it again for 2 seconds to turn on the load.
-
Definition of the inverter terminal/remote terminal:
-
Connect the MT91 with an inverter:
Connect the MT91’s “inverter terminal” and the inverter’s RJ45 port through an RS485 communication cable (included accessory, model: CC-RJ45-3.81-100U. The cable length can be customized according to customers’ actual requirement.) -
Connect the MT91 with an auxiliary module
Connect the “remote terminal” of the MT91 and the auxiliary modules such as the Bluetooth module/wireless module/BMS through an adapter cable.
Installation Instructions
Surface mounting installation is recommended.
Step 1: Locate based on the installation size (91mm) and drill two screw
holes(no smaller than 77x52mm).
Step 2: Use two PWM3*10 screws to fix the remote meter.
Button Instruction
| Button | Operation | Instruction |
|---|
| Click| Move up
Press for 2s| In the real-time interface (that is, the default interface after
the device is powered on), press it for 2s to enter the setting interface.
In the setting interface, press it for 2s to enter the specific parameter
configuration interface.
| Click| Move down
Press for 2s| In the real-time interface, press it for 2s to turn on/off the
load output (default on, press it for 2s to turn off the load output).
In the setting interface, press it for 2s to confirm the parameter
configuration.
| Click| In the setting interface, click them to exit the parameter
configuration interface.
Press for 2s| In the real-time interface, press them for 2s to clear the
faults.
A long beep for parameter confirming and short beeps for other button operations.
Real-time Interface
In the real-time interface(namely, the default interface after the device is powered on), please click to display the below parameters in a cycle.
Note: means, the load being on status, means the load being off status.
Setting Interface
The parameter configuration process is as follows.
Step1: In the real-time interface, press for 2s to enter the setting
interface.
Step2: Click or to select the parameter to be configured.
Step3: Press for 2s to enter the configuration interface of the specified
parameter. The parameter value will be flashing.
Step4: click or to select the parameter value.
Step5: Press for 2s to confirm the configuration.
Step6: Click + to exit the current interface.
Common parameters are shown in the following table:
LCD
Display
| Parameters| Default| User define
---|---|---|---
| Output voltage class
①
| 220VAC| 220VAC/ 230VAC
110VAc| 110VAC/ 120VAC
**| Output frequency ①| **
50Hz
| ****
50Hz/60Hz
****| LCD
backlight time
| 30s| 30s/ 60s/100s(ON solid)
**| Low voltage disconnect voltage ②**| 12V: 10.8V
24V: 21.6V
48V: 43.2V
| 12V:10.5V~14.2V; step size:0.1V
24V: 21V-30.2V; step size:0.1V
48V: 42V-62.4V; step size:0.1V
**| Low voltage reconnect voltage ②**| 12V: 12.5V
24V: 25V
48V: 50V
| 12V: 11.5V~15.2V; step size:0.1V
24V: 22V-31.2V; step size:0.1V
48V: 43V-63.4V; step size:0.1V
**| Over voltage reconnect voltage ②**| 12V: 14.5V
24V: 29V
48V: 58V
| 12V: 11.5V~15.2V; step size:0.1V
24V: 22V-31.2V; step size:0.1V
48V: 43V-63.4V; step size:0.1V
**| Over voltage disconnect voltage ②**| 12V: 16V
24V: 32V
48V: 64V
| 12V: 12.5V~16.2V; step size:0.1V
24V: 23V-32.2V; step size:0.1V
48V: 44V-64.4V; step size:0.1V
- After configuring the parameters marked with ①, the inverter will restart automatically. It will resume work according to the new parameter value.
- NPower and IPower-Plus series support the modification of parameters marked with ②. Please refer to the following rules for the modification; otherwise, the parameter setting will not succeed. IPower does not support modification of parameters marked with ②.
Rules for battery protection voltage:
A. Overvoltage limiting voltage(16.2/32.2/64.4V) ≥ Overvoltage disconnect
voltage ≥ Overvoltage reconnect voltage +1V.
B. Overvoltage reconnect voltage ≥ Low voltage reconnect voltage.
C. Low voltage reconnect voltage ≥ Low voltage disconnect voltage +1V.
D. Low voltage disconnect voltage voltage(10.5/21/42V).
Detail status is shown as the following when reaching the protection voltage point.
Input voltage
protection
| Status
---|---
Over voltage protection
| The output is switched OFF. The blue indicator fast flashes.
Buzzer beeps.
LCD displays the .
Over voltage reconnect| The blue indicator is ON solid. The output voltage is normal.
Low voltage protection
| The output is switched OFF. The blue indicator slowly flashes.
Buzzer beeps.
LCD displays the .
Low voltage reconnect| The blue indicator is ON solid. The output voltage is normal.
Note: Although the inverter is supplied with the over voltage protection function, the surge voltage is not higher than 20V for the 12V system, not higher than 40V for the 24V system, and not higher than 80V for the 48V system; otherwise, the inverter may be damaged.
Error Codes
Error
code
| Faults| Buzzer| Working
indicator
| Fault
indicator
---|---|---|---|---
| Inverter over temperature
Heat sink over temperature| 5 beeps| OFF| ON solid
| Input over voltage| 5 beeps| Fast flashing (1Hz)| OFF
| Input low voltage| 5 beeps| Slowly flashing (1/4Hz)| OFF
| Output short circuit| 5 beeps| OFF| Fast
flashing (1Hz)
| Output overload| 5 beeps| ON solid| Slowly flashing (1/4Hz)
****| Output voltage abnormal| 5 beeps| OFF| OFF
Specifications
| Model | MT91 |
|---|---|
| Compatible products | NPower/IPower-Plus/IPower |
| Power supply | 5VDC |
| Power supply method | Inverter communication port |
| LCD visual angle | 12′ clock |
| LCD backlight | Yes |
| Installation method | Surface mounting installation |
Self-consumption
| 14mA/5V(no backlight) 23mA/5V(backlight)
Working temperature| -20℃～+60℃
Storage temperature| -35℃～+70℃
Dimension| φ100mm X 19.4mm(Diameter X Height)
Mounting dimension| φ100mm X 50mm(Diameter X Height)
Mounting hole size| φ3.5mm
Net Weight| 65g
Dimension
Any changes without prior notice! Version number: V1.1
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
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>