MQ-VFD200
4G Smart Pump Controller for Irrigation Systems
4G smart pump controller for agricultural and landscape irrigation, with constant pressure control and remote monitoring via the iMaigg app.
Overview
MQ-VFD200 is a 4G smart pump controller designed for agricultural and landscape irrigation. It controls water pumps, maintains constant pressure, and enables remote monitoring through the iMaigg mobile app. As part of the iMaigg Smart Irrigation System, it integrates with iMaigg smart valves and fertigation machines to deliver advanced automation. The controller supports 220V single-phase and 380V three-phase pump systems, local manual operation, pressure sensor input, digital inputs, and RS485 communication with VFD (Variable Frequency Drive).
Key Features
- 4G Remote Control & Monitoring — Manage pumps from the iMaigg app anytime, anywhere.
- Constant Pressure Control — Works with VFD for stable water pressure in irrigation systems.
- Valve-Pump Interlock — Automatically opens valves before starting the pump and stops the pump before closing valves. Prevents water hammer and pipe damage.
- Reservoir Level Management — Monitor tank levels via float switch or level sensor and set automatic start/stop rules in the app.
- Wide Compatibility — Supports 220V single-phase and 380V three-phase pumps. Works with AC contactor (direct start) or VFD (constant pressure).
- Multiple Inputs — 2 sensor inputs (4-20mA pressure transmitter), 4 digital inputs (D1-D4), RS485 communication.
- Dry Contact Outputs — Switch Output 1 (15A) for pump start/stop; Switch Output 2 (5A) for alarm.
- Easy Installation — DIN rail mount, clear terminal labels, external 4G antenna for strong signal.
Technical Specifications
| Item | Specification |
|---|
| Model | MQ-VFD200 |
| Type | 4G Smart Pump Controller (VFD Model) |
| Power Input | 220V AC single-phase / 380V AC three-phase |
| Pump Compatibility | 220V single-phase / 380V three-phase |
| Control Method | AC contactor direct start or VFD constant pressure |
| Communication | 4G (SIM card required), RS485 for VFD |
| Sensor Inputs | 2 x 4-20mA (pressure transmitter) |
| Digital Inputs | 4 x dry contact (D1-D4) |
| Switch Output 1 | COM, NO, NC; 15A dry contact (pump start/stop) |
| Switch Output 2 | COM, NO, NC; 5A dry contact (alarm) |
| Power Output | 24V DC, max 100mA |
| Operating Temperature | -10℃ to 50℃ (typical) |
| Protection | IP20 (install in dry distribution box) |
| Dimensions | Standard DIN rail mount |
Wiring & Installation
MQ-VFD200 must be installed by a qualified electrician. The controller outputs are dry contacts (volt-free) and must not be connected directly to the pump motor. Use an external AC contactor or VFD to control the pump main circuit.
Typical wiring scenarios:
- 220V single-phase pump + AC contactor (direct start)
- 380V three-phase pump + AC contactor (direct start)
- 220V single-phase pump + VFD (constant pressure)
- 380V three-phase pump + VFD (constant pressure)
For constant pressure, connect the remote pressure transmitter to 24V and A1 terminals, and set the correct pressure range in the iMaigg app or VFD parameters.
System Integration
When used with the iMaigg Smart Irrigation System, MQ-VFD200 enables:
- Valve-Pump Interlock — Pump starts only after valve opens; valve closes only after pump stops.
- Unified App Control — Adjust pressure, start/stop pump, and monitor status from the same iMaigg app used for valves and fertigation.
- Reservoir Management — Connect float switch or level sensor to D1-D4 and configure rules in the app.
Typical Applications
- Agricultural irrigation
- Landscape irrigation
- Orchard and vineyard irrigation
- Greenhouse irrigation
- Reservoir and tank water level control
- Constant pressure water supply
- Remote pump monitoring
FAQ
Q1: Can MQ-VFD200 control a 380V three-phase pump?
A: Yes. It supports both 220V single-phase and 380V three-phase pump systems.
Q2: Do I need a VFD for constant pressure?
A: Yes. For constant pressure operation, a VFD with RS485 communication is required.
Q3: How do I connect the pressure sensor?
A: Connect the red wire to 24V and black wire to A1 (or A2). Set the correct pressure range in the app or VFD parameters.
Q4: Can I control the pump remotely?
A: Yes. Insert a 4G SIM card, connect the antenna, and add the device in the iMaigg app.
Q5: Does it work with iMaigg smart valves?
A: Yes. It supports valve-pump interlock for safe and efficient irrigation.
Q6: What is the maximum output current?
A: Switch Output 1 is 15A; Switch Output 2 is 5A. Both are dry contacts.
Q7: Can I monitor reservoir water level?
A: Yes. Connect a float switch or level sensor to D1-D4 and configure rules in the app.
Q8: What is the warranty?
A: One year from purchase. Damage from incorrect wiring, water ingress, or force majeure is not covered.
Ordering Information
| Item | Details |
|---|
| Model | MQ-VFD200 |
| Type | 4G Smart Pump Controller (VFD Model) |
| Power | 220V single-phase / 380V three-phase |
| Communication | 4G, RS485 |
| Control | AC contactor or VFD |
| App | iMaigg Smart Irrigation App |
| Warranty | 1 year |
