XYCOM XVME-560

The XVME‑560 is a 32-channel analog input module for VMEbus, launched by XYCOM (USA). It adopts a 6U double-slot standard chassis. Equipped with a built-in 12-bit A/D converter, the module supports single-ended (SE) or differential (DI) inputs and can achieve a maximum sampling rate of 50 kHz, making it suitable for industrial control systems requiring high-precision and real-time data acquisition. While sales of this product were discontinued at the end of 2023, it is still available in the second-hand market and through some inventory channels.

Key Technical Specifications

• Model: XVME‑560 (70560‑001)
• Number of Channels: 32 channels (configurable to 64 single-ended or 32 differential)
• Resolution: 12 bit
• Sampling Rate: Up to 50 kHz (peak at approximately 100 kHz)
• Input Range: Programmable gain, supporting voltage or current input
• Power Supply: +5 V, +12 V, +24 V (compliant with VMEbus standards)
• Dimensions: 6U double-slot (approximately 13.5 cm × 23.5 cm)
• Interface: VMEbus 32-bit data bus, supporting auto-scan mode

Product Features

• High Integration: The 12-bit A/D converter and programmable gain amplifier are integrated on a single board, reducing wiring complexity.
• Multi-Channel Synchronous Sampling: Supports auto-scan mode, enabling synchronous sampling of all channels at once to ensure data consistency.
• Flexible Input Configuration: Single-ended or differential inputs can be switched freely to adapt to different sensor types.
• High Reliability: Compliant with VMEbus industrial standards, featuring anti-interference, anti-vibration capabilities, and a wide operating temperature range (-40 °C to +85 °C).
• Easy Maintenance: Modular design allows quick fault location and replacement, minimizing system downtime.

Structure and Composition

• Main Board: Contains the A/D conversion chip, gain amplification circuit, clock, and sampling control logic.
• Front-End Terminal Block: Provides 32 input terminals (screw-type or spring-type), supporting shielded wire connections.
• Power Filtering and Protection Circuit: Prevents transient voltage surges to ensure long-term stable operation of the module.
• VME Interface Card: Enables high-speed data transmission and control signal interaction with the host backplane.

Typical Application Fields

• Distributed Control Systems (DCS): Sensor signal acquisition in continuous production processes such as chemical engineering, petroleum, and metallurgy.
• Laboratory and Test Instruments: High-precision data recording and waveform capture.
• Aerospace and Defense: Real-time monitoring systems requiring reliable, synchronous multi-channel analog inputs.
• Semiconductor Manufacturing Equipment: Acquisition of process parameters for equipment such as etching, deposition, and lithography tools.

Installation and Maintenance Guidelines

Installation

1. Insert the module into the corresponding slot of a VMEbus-compliant 6U double-slot backplane, ensuring the slot latch is properly engaged.
2. Connect the power cables (+5 V, +12 V, +24 V) and ground wire, and check that the connections are secure.
3. Use shielded wires to connect sensor signals to the front-end terminal block, paying attention to the corresponding connection method for single-ended/differential inputs.

Configuration

1. Set parameters such as sampling rate, gain, and input range via upper computer software or a VME controller.
2. When enabling auto-scan mode, confirm that the scan cycle matches the overall system timing.

Daily Maintenance

1. Regularly check for loose or corroded terminal connections; re-tighten or replace them if necessary.
2. Monitor the module temperature and power supply voltage to prevent overheating or voltage anomalies.
3. If a channel fails, the system can be quickly restored by replacing the individual front-end terminal block or the entire module.

Troubleshooting

• No Data: Check the VMEbus power supply, backplane connections, and upper computer communication settings.
• Excessive Noise: Confirm that the shielded wires are properly grounded and check if the gain setting is appropriate.
• Channel Drift: Re-calibrate the gain or replace the damaged input terminals.

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