UFC784AE(UFC784AE101) ABB 3BHE003688R000 input/fast cut-off output module

Description:

The ABB UFC784AE (3BHE003688R000) is a high-performance pulse input/fast cut-off output module for industrial automation and DCS systems. It features high-speed pulse acquisition, channel isolation, and millisecond-level safe shutdown capabilities, and is suitable for encoder signal processing, metrology verification, and safety control of critical equipment.

Specifications:
Model Number: UFC784AE
Input Type: High-speed pulse input (multi-channel)
Minimum Pulse Width: 3μs (Pulse Width Rejection Off); 20μs (Pulse Width Rejection On)
Output Type: Solid State Relay (SSR), Channels 7/8 are fast-cut type
Output Electrical Specifications: Voltage 5–60VDC, Current 0.001–2A
Isolation Class: Optical isolation 1500Vrms (input/output and system)
Fast Cut-off Delay: ≤1ms (maximum)
Protection Configuration: 2.5A user-replaceable fuse (output channel)
Leakage Current: ≤100μA (60VDC, off state)
Bus Interface: Supports IOTA bus, up to 5 modules cascaded

FEATURES:

• High-speed pulse acquisition

Minimum pulse width 3μs (off suppression) / 20μs (on suppression), supports multi-channel synchronous acquisition.

• Fast and safe shutdown

Channels 7/8 are fast-cutoff outputs with a delay ≤1ms and optical isolation of 1500Vrms.

• Metrological verification support

Provides a "good pulse" output, supports calibrator applications, and allows up to 5 modules to be cascaded via the IOTA bus.

• Diagnostics and protection

Output channels integrate a 2.5A replaceable fuse; leakage current in shutdown state ≤100μA (60VDC).

• System integration

Compliant with IEC 61131 toolchain, supports automatic configuration for master/slave switching, and can be connected to an SOE event logging system.