Vibro-meter VMF IOC4T 4-Channel I/O Module

The Vibro-meter VMF IOC4T is a high-precision 4-channel input/output module designed for the VMF series condition monitoring system. This module is optimized for critical measurement points requiring enhanced signal fidelity and dedicated processing capabilities, making it ideal for vibration monitoring on essential rotating machinery.

Analog Input Characteristics

Each of the four channels features independent 24-bit analog-to-digital conversion with programmable input ranges. The module supports direct connection to a wide variety of sensors including IEPE accelerometers, velocity transducers, eddy current proximity probes, and 4-20 mA process transmitters. Integrated signal conditioning provides sensor excitation, programmable filtering, and scaling to engineering units.

• Channel Count: 4 independent high-precision channels

• Input Types: IEPE/ICP, voltage (±10 V), current (4-20 mA), proximity probe

• Resolution: 24-bit delta-sigma ADC

• Dynamic Range: 110 dB typical

• Sampling Rate: Up to 100 kHz per channel

• Anti-Aliasing Filter: Programmable, 8-pole elliptic

• Excitation Current: 4 mA constant current for ICP sensors

• Input Protection: Overvoltage and ESD protection

Signal Processing Features

The IOC4T incorporates dedicated signal processing capabilities for each channel, enabling simultaneous calculation of multiple measurement parameters. The module computes overall vibration amplitude in velocity or acceleration units, displacement from proximity probes, and process values from current loops. On-board spectral analysis provides FFT processing with configurable line resolution up to 6400 lines for detailed vibration analysis.

Installation and Diagnostics

Designed for hot-swap installation in VMF series racks, the IOC4T supports module replacement without system power-down. Front panel LEDs provide clear status indication for each channel, including sensor health, signal validity, and communication status. The module performs continuous self-diagnostics, monitoring sensor bias levels, cable integrity, and internal reference voltages to ensure measurement reliability.