Overview
The Elreha BMA 3251 is a specialized analog input module designed for industrial process control and monitoring applications. As part of Elreha’s BMA-3000 series, this module provides reliable signal acquisition for compound control systems, cooling plants, and HVAC installations. The BMA 3251 handles up to 5 signal transmitter inputs at 4-20 mA and includes 1 dedicated temperature sensor input, making it ideal for multi-parameter monitoring in demanding industrial environments.
Key Features
- 5 analog signal inputs rated 4-20 mA for transmitter signals
- 1 dedicated temperature sensor input for thermal monitoring
- RS-485 databus interface for networked operation
- Adjustable address configuration via dual incremental switches
- LED status indicators for mains and communication monitoring
- IP 30 rated ABS housing with transparent cover
- DIN-rail mountable for standard panel integration
Technical Specifications
- Analog Inputs: 5 × 4-20 mA signal transmitter inputs
- Temperature Inputs: 1 × temperature sensor input
- Communication Interface: RS-485 (ICOM databus)
- Supply Voltage: 24 VDC
- Output Current: 100 mA
- Housing: ABS with transparent cover
- Protection Rating: IP 30
- Mounting: DIN-rail
- Dimensions: 153 × 93 × 63 mm
- LED Indicators: Mains and communication status LEDs
Typical Applications
- Compound control systems for multi-stage cooling plants
- HVAC monitoring in building automation
- Industrial process control with distributed I/O
- Refrigeration and chiller system supervision
- Pressure and temperature data acquisition networks
Compatibility & Replacements
Compatible With
- Elreha VPR 5140 control systems
- Elreha VPR 5340 compound control systems
- Elreha TKP3000 controller platforms
- RS-485 networked Elreha control architectures
- Standard 24 VDC control systems with RS-485 support
Replaces / Drop-In Replacement For
- Elreha BMA 3251 (same part number, direct equivalent)
- Verify compatibility with your specific Elreha system configuration before ordering
Works With
- RS-485 (ICOM) communication protocol
- Elreha Compound Control Central Software
- DIN-rail panel mounting systems
- 24 VDC industrial control platforms
