Communication Interface

ISBus Fiber Optic Interface: 2 independent channels (input / output)

Compatibility: EX2100 control modules and ESYSH series boards

Supports high-speed, deterministic fiber-optic communication

Power Supply Specification

Supply Voltage: 24 VDC (from system power module)

Power Consumption: ≤ 1 W

Power Input: Supports redundant power supply configuration

Physical Specifications

Form Factor: Single-slot, 3U height

Dimensions: Approx. 18.7 × 26.0 × 2.0 cm

Weight: Approx. 0.5 kg

Installation: DIN-rail mounting

Fixation: Backplane connector interface

Operating Environment & Certification

Operating Temperature: –20 °C to +65 °C

Humidity: 5%–95% (non-condensing)

Compliance: UL / CE / RoHS

Status Indication & Diagnostics

On-board LED indicators: Run / Bypass / Fault

Fault code output to support rapid troubleshooting and diagnosis

Core Functions & Adaptability
ISBus Bypass Capability

Automatically switches to a bypass communication path when an ISBus node board (e.g., ERDD, ESYSH) is removed or serviced. This ensures uninterrupted ISBus communication and supports online maintenance without system shutdown.

Fault Isolation

Continuously monitors bus and board status. Upon detecting a fault, the module isolates the affected board from the ISBus, preventing fault propagation and improving overall system stability.

Redundant System Collaboration

Operates in conjunction with the EISB board to maintain ISBus communication reliability in dual-redundant architectures. Supports seamless communication continuity during redundancy switchover events.