Motorola MVME-374

Description

Detailed Parameter Table

Motorola MVME-620

Product Introduction

The **Motorola MVME-374** is a versatile medium-density 3U VMEbus digital I/O module tailored for industrial automation systems requiring flexible discrete signal management. As a practical member of Motorola’s MVME300 series, it integrates 16 optically isolated digital input channels and 16 solid-state relay (SSR) output channels, offering a balanced solution for connecting sensors, actuators, and discrete devices in mid-scale mission-critical applications.

With software-configurable 12V/24V DC input compatibility and reliable SSR outputs rated for 1A @ 250V AC / 2A @ 30V DC, the **Motorola MVME-374** adapts to diverse industrial device requirements. Its 1500V AC isolation between inputs/outputs and the backplane provides effective protection against electrical noise and ground loops, enhancing system stability. The VMEchip1 interface enables seamless integration into VMEbus-based control systems as a slave device, facilitating real-time data exchange with host CPUs. Designed to operate in -40°C to +85°C environments, this module delivers consistent performance in harsh industrial settings.

Core Advantages & Technical Highlights

Balanced Medium-Density I/O: Featuring 16 input and 16 output channels in a single 3U VME slot, the **Motorola MVME-374** strikes a balance between I/O capacity and chassis space efficiency. This medium density is ideal for mid-scale systems with moderate numbers of sensors and actuators, reducing unnecessary complexity while keeping deployment costs manageable.

Configurable Inputs & SSR Outputs: Software-configurable 12V/24V DC inputs eliminate the need for hardware rewiring when adapting to different sensor voltage requirements. Solid-state relay outputs offer faster switching speeds and longer lifespans compared to mechanical relays, with overload protection to prevent damage from current spikes—suitable for delicate or frequent-switching loads.

Industrial-Grade Reliability: Operating from -40°C to +85°C, the **Motorola MVME-374** withstands extreme temperatures, vibration, and electromagnetic interference (EMI) common in manufacturing plants, packaging facilities, and transportation subsystems. Its rugged construction and high-quality components ensure long-term stable operation, minimizing unplanned downtime.

Responsive Signal Handling: With input response times of ≤2ms and output response times of ≤3ms, the **Motorola MVME-374** captures and acts on discrete signals in near-real time—suitable for time-sensitive control applications such as production line sequencing and equipment interlocks.

Seamless VMEbus Compatibility: The VMEchip1 controller supports 16-bit VMEbus data transfers, ensuring compatibility with legacy VMEbus systems. As a slave device, it responds promptly to host commands, enabling timely I/O updates for control algorithms and maintaining system synchronization.

Typical Application Scenarios

Mid-Scale Manufacturing Control: In electronic component assembly lines, the **Motorola MVME-374** connects photoelectric sensors (inputs) that detect component placement and SSR outputs that control small motors and solenoid-driven tools. Its configurable inputs adapt to both 12V and 24V sensors, while SSR outputs ensure reliable operation for frequent on/off cycles of assembly equipment.

Packaging Machinery Control: In food packaging plants, the module monitors proximity sensors (inputs) that track package position and controls heating elements and sealing mechanisms (outputs) via SSRs. The 1500V AC isolation protects against noise from packaging motors, and the wide operating temperature range accommodates variations in plant floor conditions.

Building Automation Subsystems: In large commercial building HVAC or lighting control systems, the **Motorola MVME-374** interfaces with occupancy sensors (inputs) and controls dampers, fans, or lighting circuits (outputs). SSR outputs offer silent operation and long lifespans, reducing maintenance needs in building infrastructure.

Test Bench Instrumentation: In electronics test benches, the module connects limit switches (inputs) that detect test fixture positions and controls relay-driven test points (outputs). Configurable inputs support various sensor types, and fast response times ensure accurate synchronization between test steps.

Motorola MVME-620

Related Model Recommendations

Motorola MVME-376: Higher-density digital I/O module with 32 input/32 output channels, ideal for scaling up systems from **Motorola MVME-374**.

Motorola MVME-162-01: 3U VMEbus CPU module compatible with **Motorola MVME-374**, serving as the host for I/O data processing and control.

Motorola MVME-701A: Serial communication module, working with **Motorola MVME-374** to transmit I/O status data to remote monitoring systems.

GE VMIVME-7650: Analog I/O module complementary to **Motorola MVME-374**, adding analog data acquisition and control capabilities.

Motorola MVME-197LE: Memory expansion module for host CPUs, increasing storage for I/O data logs collected by **Motorola MVME-374**.

Motorola MVME-605: Next-generation PowerPC SBC, pairing with **Motorola MVME-374** for upgraded control systems requiring higher processing power.

Installation & Maintenance Guidelines

Installation Preparation: Before installing the **Motorola MVME-374**, ensure the VMEbus chassis is powered off and properly grounded. Align the module with the 3U slot guides, verifying P1/P2 backplane connector alignment. Gently insert until fully seated, then fasten front-panel screws to prevent vibration-induced disconnections. For wiring, use shielded cables for input channels; set input voltage configuration via software before connecting sensors; ensure SSR outputs are connected to loads within the specified current/voltage ratings.

Maintenance Best Practices: Perform quarterly inspections to clean dust from connectors and front-panel status LEDs using compressed air. Regularly check channel status LEDs to identify faulty inputs or outputs. Test SSR outputs monthly by energizing each channel and verifying load operation. Ensure power supplies for inputs/outputs are stable (±10%) to prevent performance issues. Use only genuine Motorola spare parts to maintain VMEbus compatibility and I/O performance.

Service & Warranty Commitment

The **Motorola MVME-374** is backed by a 2-year manufacturer’s warranty covering defects in materials and workmanship under normal industrial operation. Motorola’s technical support team provides professional assistance via email and phone, with response times within 24 hours for critical issues. We offer remote diagnostic services to troubleshoot I/O connectivity problems, minimizing on-site service costs. For legacy systems, we provide repair and component replacement services to extend product lifecycle. Our commitment to quality ensures that the **Motorola MVME-374** delivers consistent, reliable digital I/O performance, protecting your investment in mid-scale industrial automation infrastructure.