Overview
The Elreha SMZ-23140 is a dedicated error message and monitoring/communication system designed for controller networks based on the E-Link protocol. This DIN-rail mounted unit operates on 115V AC supply and integrates alarm capture, data logging, and remote connectivity into a single compact device, making it ideal for distributed control systems that require centralized diagnostics and event management.
Key Features
- Multi-function Operation: Acts as error message unit, monitoring/communication device, and data logger in a single unit
- Dual Serial Interfaces: 2x RS-232 and 2x RS-485 connectors for flexible network connectivity
- 16-Input Alarm Capture: Captures up to 16 error messages via configurable digital inputs
- Network Support: Connects up to 64 networked controller units for centralized monitoring
- Remote Communication: Modem connectivity for remote PC access via SMS, Fax, and Email notifications
- Local Display Control: 4-key operation with backlighted LC-Display for on-site parameter configuration
- Data Logging: Records parameters and temperature data from networked controllers
- Watchdog Monitoring: Monitors PC-software operation and restarts modem in configurable intervals
Technical Specifications
- Supply Voltage: 115V AC
- Mounting Style: DIN-Rail (W x H x D): 153 x 114 x 59 mm
- Serial Interfaces: 2x RS-232, 2x RS-485
- Digital Inputs: 16 configurable alarm inputs
- Digital Outputs: Relay module available (optional)
- Network Capacity: Supports up to 64 connected controller units
- Display: Backlighted LC-Display with 4-key control panel
- Control Protocol: E-Link protocol based
- Remote Access: Modem-enabled (MDM 1002/3002 optional)
- Data Management Software: CV-Scheduler (Windows XP, 7, 8, 8.1)
Typical Applications
- Refrigeration and cold storage facility monitoring and control networks
- Multi-stage compressor and cooling system coordination
- Centralized alarm aggregation for distributed PLC controllers
- Remote machine condition monitoring and predictive maintenance
- Temperature and pressure sensor data logging across facility networks
- Emergency notification systems with modem-based SMS and Email alerts
- Industrial automation systems requiring networked diagnostics and reporting
Compatibility & Replacements
Compatible With
- Elreha E-Link protocol controller networks
- Elreha MSR eco and BMO series controllers
- Industrial automation systems with RS-232/RS-485 serial communication
- Remote monitoring via standard telephone modem (analog or SMS/GSM)
- Windows-based PC software (XP, Vista, 7, 8, 8.1)
- CV-Scheduler data management and configuration software
Replaces / Drop-In Replacement For
- Elreha SMZ-3140 (230V variant); SMZ-23140 is the 115V equivalent
- Elreha SMZ-5140 and SMZ-25140 (higher-capacity panel-mount variants)
- Legacy error messaging and monitoring units in Elreha system networks
Works With
- E-Link protocol communication networks
- RS-232 and RS-485 serial communication standards
- Elreha CV-Scheduler software suite
- Standard telephone modems and SMS/GSM modem modules
- DIN-rail standard industrial control enclosures and cabinet systems








