MBMET Range of Measurement and Control Devices
Smart Box - MBMet-M1448
MBMet M‑1448 SmartBox—an advanced field interface module that converts analog input signals to RS‑485 MODBUS RTU
MBMet M‑1448 SmartBox—an advanced field interface module
Experience intelligent signal management with the MBMet M‑1448 SmartBox—an advanced field interface module that converts analog input signals to RS‑485 MODBUS RTU communication. Designed for clean, accurate, and long-distance signal transmission, the SmartBox helps eliminate heavy copper wiring and enhances interoperability with SCADA and data logging systems.
Its compact, rugged IP65-rated cast aluminum housing ensures durability even in demanding field conditions. SmartBox supports voltage, current, and RTD temperature signals, making it a versatile choice for solar plants, substations, control panels, and distributed weather monitoring stations.
Benefits & Features
- Converts analog signals (mV/mA) and temperature inputs (RTD) to MODBUS RTU
- 1× RTD input channel (PT100 or PT1000, –20 to +120°C in °C/°K/°F)
- 2× independently configurable analog input channels (0–1000 mV or 4–20 mA)
- Optional calibration constants for mV input channels
- 24-bit ADC resolution for high-precision measurements
- Sampling rate: 10 Hz
- Isolated RS-485 communication
- Available for AC or DC power supply
Technical Specification
Electrical Specifications
| Parameter | Specification |
|---|---|
| Power Supply (AC Model) | 230 VAC (Model MBM-01-A) |
| Power Supply (DC Model) | 24 VDC (Model MBM-01-D) |
| Analog Input Channels | 2 Channels configurable as 0–5 V, 0–10 V or 4–20 mA |
| Analog Channel Features | User selectable input type per channel Optional calibration offset and gain Each analog accepts filter for 3 sec Avg |
| RTD Input | 1 × RTD (PT100 or PT1000, Class A) |
| RTD Range | -20°C to +120°C (user selectable in °C, °F, °K) |
| Accuracy | ±0.10% |
Analog & Signal Processing
| Parameter | Specification |
|---|---|
| ADC Resolution | 24-bit |
| Sampling Rate | 10 Hz |
Communication Parameters
| Parameter | Specification |
|---|---|
| Communication Port | RS-485 (Standard) |
| Isolation Voltage | 1.5 kV |
| Protocol | MODBUS-RTU |
| Baud Rates | 2400 / 9600 / 19200 (user-configurable) |
| Parity | Odd, Even, or None |
| Device ID | 1 to 247 |
Mechanical & Environmental
| Parameter | Specification |
|---|---|
| Enclosure Material | Powder-coated cast aluminum |
| Ingress Protection | IP65 |
| Enclosure Dimensions | 125 × 125 × 60 mm (D × W × H) |
| Weight | 600g |
| Cable Terminals | 5 mm² signal, 6 mm² for power |
| Ambient Operating Temp. | -20°C to +60°C |
| Ambient Humidity | 0–95% RH (non-condensing) |
Model Variants (Ordering Information)
| Model Code | Power Supply | RTD Input | Features |
|---|---|---|---|
| M1448-A-PT100 | 220 VAC | PT100 | SmartBox with AC supply and PT100 RTD |
| M1448-A-PT1000 | 220 VAC | PT1000 | SmartBox with AC supply and PT1000 RTD |
| M1448-D-PT100 | 9–32 VDC | PT100 | SmartBox with DC supply and PT100 RTD |
| M1448-D-PT1000 | 9–32 VDC | PT1000 | SmartBox with DC supply and PT1000 RTD |
