Fieldbus Interface & Diagnostics
- Network Protocol: INTERBUS.
- Network Copper Medium: Wired connection via a 9-position D-SUB female plug (incoming remote bus) and a 9-position D-SUB male plug (outgoing remote bus interface).
- Local Bus Capacity: Communicates with and provides internal signal processing for up to 8 downstream ST input/output blocks.
- Core Functions: Automatically manages the electrical isolation of separate network segments, refreshes remote signal transmission timing, and features a software decoupling command to isolate sub-stations during active line testing.
Electrical Power Parameters
- Nominal Operating Supply Voltage: 24 V DC.
- Ripple Voltage Factor: Max 3.6 Vpp (within the acceptable operational window).
- Integrated Power Supply Unit: Contains a built-in, completely electrically isolated buck converter transformer designed to safely feed signal power to the connected local I/O slice blocks.
- Galvanic Isolation: High-level isolation layout separates the processing network electronics cleanly from the primary 24V field potential lines.
Mechanical, Wiring & Environmental
- Connection Profile: Screw-clamp terminal blocks integrated onto a modular terminal base section.
- Mounting Infrastructure: Designed to snap firmly onto standard 35mm symmetric DIN rails (NS 35/7.5 or NS 35/15).
- Ingress Protection Level: IP20 protection rating (requires a dust-free enclosure or control cabinet panel deployment).