PEDROLLO MM 8 Wall Mounted Inverter Instructions
- June 1, 2024
- pedrollo
Table of Contents
PEDROLLO MM 8 Wall Mounted Inverter
Product Information
Specifications
- Power supply voltage: 1 ~ 230 V
- Pump motor voltage: 1 ~ 230 V
- Permissible voltage variation: Standard
- Supply frequency: 50 Hz
- Maximum pump motor current: 8.5 A (DG FIT MM 8), Standard (DG FIT MM 11, DG FIT MM 16)
- Maximum pump motor power: 1.5 HP (1.1 kW)
- Room temperature: Standard
- Protection rating: IP 54 (DG FIT MM 11, DG FIT MM 16)
- RS-485 communication: Standard
- Dry input contact: Standard
- Dry contact output: Standard
Product Usage Instructions
Installation
- Mount the DG FIT inverter on the wall near the pump.
- Connect the inverter to the pump motor following the provided wiring diagram.
- Install a membrane expansion tank downstream of the inverter to decrease pump start frequency and absorb excess pressure from the system.
User Interface
The keypad on the DG FIT allows easy access to configuration menus for adjusting operational parameters like system pressure, operating frequency, absorbed current, and alarm messages. LED indicators provide visual status updates.
Troubleshooting
If the pump experiences issues such as dry running, overcurrent, or overheating, refer to the user manual for troubleshooting steps or contact customer support for assistance.
FAQ
Q: Can I connect multiple devices to the DG FIT?
A: Yes, you can connect up to three devices to create pressurization units using the DG FIT.
Q: What is the purpose of the membrane expansion tank in the installation?
A: The expansion tank helps decrease pump start frequency and absorb excess pressure from the system, preventing issues like water hammer.
- Domestic use
- Civil use
INSTALLATION AND USE
- DG FIT is an inverter-based electronic control device de-signed for single-phase surface or submersible pumps.
- It is utilized for water supply in residential, commercial, and irrigation applications, and is compatible with all types of pressurization systems, including existing ones.
- DG FIT ensures maximum comfort, extends the system’s ser-vice life, and facilitates significant energy savings.
DG FIT protects the pump from
- Dry running
- Overcurrent
- Overvoltage
- Undervoltage
- Overheating
- Short circuit
PRODUCT DESCRIPTION
DG FIT is a wall-mounted frequency converter which, equip- ped with a pressure sensor, allows the rotation speed of the motor to adjust dynamically according to the amount of wa-ter required, thus ensuring constant pressure in the system.
DG FIT is characterised by:
- A display and keypad for easy, step-by-step setup of oper-ating parameters with two levels of adjustment:
- BASIC, for setting pressure and current;
- ADVANCED, for customizing the inverter for specific system needs.
- Electronic components are cooled by an integrated fan to ensure heat dissipation.
- Integrated expansion board, which allows:
- RS 485 communication for up to three DG FIT to talk to each other
- configuration of a dry input contact (e.g. float, double set point)
- configuration of a dry output contact (e.g. alarm)
- Input signal: pressure sensor
- Arrangement for wall connection
ADVANTAGES IN USE
- Easy installation, adjustment and setting.
- Energy saving due to lower absorption of the pump.
- Control of hydraulic and electrical operating parameters and protection against faults.
- Reduced noise operation.
- Longer pump life.
- Possibility to connect up to three devices to create pres-surization units
TECHNICAL DATA
| TECHNICAL DATA | DG FIT MM 8 | DG FIT MM 11 | DG FIT MM 16 |
|---|---|---|---|
| Power supply voltage | 1 ~ 230 V | 1 ~ 230 V | 1 ~ 230 V |
| Pump motor voltage | 1 ~ 230 V | 1 ~ 230 V | 1 ~ 230 V |
| Permissible voltage variation | ± 10% | ± 10% | ± 10% |
| Supply frequency | 50/60Hz | 50/60Hz | 50/60Hz |
| Maximum pump motor current | 8.5 A | 11 A | 16 A |
| Maximum pump motor power | 1.5 HP (1.1 kW) | 2 HP (1.5 kW) | 3 HP (2.2 kW) |
| Room temperature | 0 °C ÷ 40 °C | 0 °C ÷ 40 °C | 0 °C ÷ 40 °C |
| Protection rating | IP 54 | IP 54 | IP 54 |
| RS-485 communication | standard | standard | standard |
| Dry input contact | standard | standard | standard |
| Dry contact output | standard | standard | standard |
USER INTERFACE
The keypad simplifies the process of accessing and navigating configu-ration menus, enabling the adjustment, and monitoring of various op-erational parameters, including system pressure, operating frequency, absorbed current, and alarm messages. LED indicators provide quick insights into the pump’s operational status at a glance.
KEY
- Power on/off key
- Red networking LED
- Green run LED
- Display
- SET button
- Menu/parameter input/output arrows
- Menu/parameter scrolling arrows
DIMENSIONS (mm)
TYPICAL INSTALLATION
N.B.: it’s neceadvisable to install a membrane EXPAN-SION TANK downstream of the inverter to:
- decrease pump start frequency
- absorb excess pressure from the system, like water hammer