ST2000FB Series Electrical Fire Monitoring Device

The ST2000FB Electrical Fire Monitoring Device integrates monitoring, alarm, and management functions in one unit. It is designed for centralized fire monitoring in large shopping malls, residential communities, industrial and mining enterprises, office buildings, and hotels. The device connects to electrical fire monitoring detectors via RS485 bus to form a complete electrical fire monitoring system, providing real-time monitoring of electrical circuit conditions.

1) Device Overview

The ST2000FB monitors residual current and temperature signals from multiple detectors in real time. When residual current exceeds limits, over-temperature alarms occur, or power/communication faults are detected, the device issues audible and visual alarm signals, displays fault location and alarm type on the LCD screen, and provides data storage, query, and alarm control output functions.

2) Model Variants

• ST2000FB — Connects to various electrical fire monitoring detectors
• ST2000FB-H — Connects to ST2000FB electrical fire monitoring devices

Standard configuration: 8-channel Modbus-RTU communication + 2-channel Ethernet; 2 digital inputs + 8 relay outputs.

3) Key Functions

• Monitoring & Alarm: Receives residual current and temperature data from multiple detectors; issues audible/visual alarm within 10s; red "ALARM" LED lights up; LCD displays alarm location and type; alarm persists until reset
• Fault Monitoring: Communication fault alarm when any detector loses connection; power fault alarm with visual/audible indication
• Control I/O: 8 relay outputs for controlling protected circuits; 2 digital inputs for external status detection
• Historical Data: Stores alarm location, fault info, and timestamps in database; supports multiple query methods
• Self-Check: Automatic self-test on startup; manual self-check button for LEDs, buzzer, and detectors
• Dual Power Supply: Auto-switchover between main and backup power; continuous operation guaranteed during switchover; LED indicators for both power states
• Access Control: Two-level operation: Level 1 (no password) — silence alarm & query only; Level 2 (password) — self-check, reset, parameter setting
• Print Function: Prints monitoring alarm events and fault events with timestamps

4) Technical Specifications

Monitoring Circuits

• Max. detectors: 512
• Detector types: Residual current type, Temperature type

Power Supply

• Main power: AC 100~240V
• Backup power: DC 12V, backup duration ≥ 4h
• Power consumption: < 50W

Digital Input (Standard: 2 channels)

• Isolation: Optical isolation
• Supply: Internal or external DC 24V
• Response time: ≤ 50ms

Relay Output (Standard: 8 channels)

• DO1~DO8: AC 250V / 5A, DC 30V / 5A

Communication

• Modbus-RTU: 8 channels, RS485 interface, terminal connection
• Modbus-TCP: 2 channels, Ethernet interface, RJ45 connection

Alarm

• Alarm type: Audible and visual
• Sound pressure: 70~115 dB

Operating Environment

• Operating temperature: -10°C ~ +40°C
• Storage temperature: -20°C ~ +70°C
• Relative humidity: 5~95% (no condensation, no icing)
• Altitude: < 2500m
• Protection rating: IP20

5) Dimensions & Installation

Device body: Without mounting plate: 440mm × 330mm × 130mm (L×W×D); With mounting plate: 490mm × 330mm × 130mm (L×W×D)

Installation methods:

• Panel mounting: Cutout 444mm × 334mm; fixing hole spacing 464mm × 276mm; hole diameter 9×7mm
• Wall recessed mounting: Cutout 444mm × 334mm × 110mm; fixing hole spacing 464mm × 276mm; hole diameter 9×7mm
• Wall surface mounting: Fixing hole spacing 280mm × 200mm; hole diameter 9×7mm

6) Why Choose Wanlong Electric

• Factory-direct from Suzhou, China — OEM and custom configurations available
• IEC certified, reliable performance for commercial and industrial applications
• Full technical support and fast delivery