Motorola MVME-717

Description

Detailed Parameter Table

Motorola MVME-121

Product Introduction

The Motorola MVME-717 is a high-density industrial digital input module developed by Motorola—a leader in legacy industrial automation hardware—and now part of Emerson’s trusted product ecosystem. As a key discrete signal acquisition solution in the MVME series, it is engineered to collect and isolate digital input signals from industrial field devices (such as limit switches, photoeyes, and pushbuttons) and transmit them to VMEbus-based controllers for processing.

Designed to address the need for reliable, high-channel-count digital input in harsh industrial environments, the Motorola MVME-717 features 32 isolated channels, wide voltage support (10-30 VDC), and robust anti-interference protection. In automation architectures, the Motorola MVME-717 acts as a “signal hub”—it connects discrete sensors to MVME series single-board computers (like the MVME-147-023) and I/O modules (such as the MVME-121 digital I/O module). For example, it captures status signals from 32 limit switches on a conveyor system, converts them to digital data, and sends the data to the MVME-147-023 SBC to monitor for jammed parts or misaligned components. Its galvanic isolation ensures signal integrity even near large motors or variable frequency drives, making it essential for manufacturing, material handling, and automotive assembly applications.

Core Advantages and Technical Highlights

High-Density Isolated Inputs for Space Efficiency: The Motorola MVME-717 packs 32 digital input channels into a compact 3U VME form factor—doubling the channel density of many competing 3U modules (which typically offer 16 channels). This high density reduces the number of modules needed in a control cabinet, saving valuable space for other critical components (e.g., communication modules or power supplies). For example, a car assembly plant monitoring 64 limit switches across two assembly lines only needs two Motorola MVME-717 modules instead of four 16-channel modules, simplifying chassis layout and reducing wiring complexity. Each channel also features 2.5 kVrms isolation from the VMEbus, eliminating cross-talk between channels and protecting the central SBC from voltage spikes.

Flexible Voltage Compatibility for Mixed Devices: The Motorola MVME-717 supports a wide input voltage range (10-30 VDC) for wet contacts and offers 5 VDC TTL-level configuration via jumpers—compatible with nearly all industrial discrete sensors. This flexibility allows it to integrate with mixed device fleets: for instance, it can simultaneously accept 24 VDC signals from factory-grade photoeyes and 5 VDC TTL signals from legacy proximity sensors, without requiring external signal converters. Unlike modules limited to a single voltage range, the Motorola MVME-717 eliminates the need to stock multiple module types, reducing inventory costs and simplifying maintenance. Its sinking input design also aligns with the NPN sensor topology commonly used in industrial settings, ensuring plug-and-play compatibility with most off-the-shelf sensors.

Rapid Response Time for Real-Time Monitoring: With a response time of ≤1 ms, the Motorola MVME-717 captures fast-changing input signals (e.g., a momentary contact closure from a emergency stop button) and updates the module’s memory almost instantly. This speed is critical for time-sensitive applications like robotic safety systems, where a delayed response to a “stop” signal could lead to equipment damage or operator injury. For example, in a robotic welding cell, the Motorola MVME-717 detects when a safety door is opened (via a limit switch) and sends the signal to the MVME-162-001 SBC in under 1 ms, triggering an immediate robot shutdown. Unlike slower modules (with 5-10 ms response times), the Motorola MVME-717 ensures no critical status changes are missed, enhancing operational safety and productivity.

Robust Protection for Harsh Environments: The Motorola MVME-717 integrates multi-layer protection to withstand industrial hazards: ESD protection (±15 kV contact) prevents damage from electrostatic discharge (common when handling sensors or wiring); overvoltage protection (up to 40 VDC) shields against accidental connection to high-voltage sources (e.g., a 48 VDC power supply); and reverse polarity protection (up to -30 VDC) guards against wiring errors (e.g., reversing positive and negative terminals). In a metal stamping facility, where dust and electrical noise are prevalent, these protections ensure the Motorola MVME-717 maintains reliable operation—even if a technician accidentally wires a sensor incorrectly or a nearby stamping press generates voltage spikes.

Typical Application Scenarios

The Motorola MVME-717 excels in industrial settings requiring high-volume discrete signal monitoring—including manufacturing, material handling, and automotive assembly. In a heavy machinery manufacturing plant, it is deployed to monitor the status of 32 hydraulic valve position sensors on a bulldozer assembly line. The Motorola MVME-717’s input channels capture 24 VDC signals from the sensors (indicating whether valves are fully open, closed, or in transit), and transmit the data to the MVME-147-023 SBC. The SBC uses this data to verify that each valve is properly positioned before the next assembly step—preventing misalignment issues that could cause hydraulic leaks in finished bulldozers. The module’s vibration resistance (1.5 g peak) withstands mechanical shocks from nearby assembly tools, ensuring consistent signal capture.

In a warehouse material handling system, the Motorola MVME-717 monitors 32 photoelectric sensors along a network of conveyors. Each sensor detects the presence of packages, and the Motorola MVME-717 sends real-time status data to the MVME-162-001 SBC. The SBC uses this information to adjust conveyor speeds (e.g., slowing down when a package is detected at a merge point) and trigger diverters to route packages to the correct shipping lane. The module’s ≤1 ms response time ensures the SBC receives package presence signals instantly, avoiding bottlenecks or misrouted packages. Its wide operating temperature range (-10°C to 65°C) also works in unheated warehouse facilities during winter months.

In automotive assembly, the Motorola MVME-717 is used to monitor safety interlocks on robotic paint booths. It captures 24 VDC signals from 32 door switches, light curtains, and emergency stop buttons—all critical for ensuring operator safety. If a door switch is triggered (indicating an operator has opened the booth door), the Motorola MVME-717 sends the signal to the MVME-147-023 SBC in ≤1 ms, which immediately shuts down the paint robots and sprays. The module’s galvanic isolation protects against electrical interference from the booth’s high-voltage paint pumps, ensuring the safety signals are never corrupted—preventing potential injuries or paint system damage.

Motorola MVME-121

Related Model Recommendations

Motorola MVME-718: A sibling model in the MVME-71x series, with 32 digital output channels (vs. inputs for MVME-717). It is designed to pair with the Motorola MVME-717—the MVME-717 collects input signals, while the MVME-718 sends output commands to actuators (e.g., solenoids, relays).

Motorola MVME-147-023: A complementary MVME series SBC that processes data from the Motorola MVME-717. The MVME-147-023 reads the module’s digital input data to execute control logic (e.g., stopping a conveyor if a limit switch is triggered).

Motorola MVME-050: An industrial power supply module that powers the Motorola MVME-717. Its stable +5V and +12V outputs ensure the module’s isolation circuits and LED indicators operate reliably.

Motorola MVME-910-3: An Ethernet communication module that works with the Motorola MVME-717. It transmits the module’s input status data to upper-level SCADA systems via Ethernet, enabling remote monitoring of sensor status.

Motorola MVME-121: A mixed digital I/O module that complements the Motorola MVME-717. The MVME-121 provides 32 inputs/32 outputs for balanced I/O needs, while the MVME-717 offers additional inputs for high-sensor-count applications.

Motorola MVME-716: A lower-density variant of the Motorola MVME-717, with 16 digital input channels. It is a cost-effective option for small-scale systems (e.g., standalone machines with 10-15 sensors).

Motorola MVME-162-001: A high-performance SBC that leverages the Motorola MVME-717’s rapid response time. Its faster 68060 processor (66 MHz) processes the module’s real-time input data more quickly than the MVME-147-023, ideal for high-speed production lines.

Motorola MVME-1331: A serial communication module that pairs with the Motorola MVME-717. It transmits the module’s data to legacy serial-based HMIs, supporting facilities with mixed Ethernet/serial infrastructure.

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing the Motorola MVME-717, verify the VMEbus chassis supports 3U modules and provides stable +5V/+12V power (use a multimeter to check voltage tolerance within ±5%). Gather tools: anti-static wristband (to protect isolation circuits from ESD), Phillips screwdriver (for chassis mounting), wire strippers (for sensor wiring), and a multimeter (to test input voltage and continuity). Configure input voltage jumpers (if using 5 VDC TTL signals) per the product manual—incorrect jumper settings may damage sensors or the module. Ensure the chassis is powered off, clean the VME backplane connector with a dry brush to remove dust, then align the Motorola MVME-717 with the chassis’ guide rails and slide it into the backplane until fully seated. Secure with screws (torque to 0.4 N·m) to avoid loose connections. Use twisted-pair cables for sensor wiring (to reduce noise) and label each cable to match the module’s channel numbering.

Maintenance suggestions: For daily upkeep of the Motorola MVME-717, inspect the LED indicators weekly—steady green power LED, illuminated bank LEDs (for active input channels), and no fault LED indicate normal operation. Run the built-in self-test (BIST) monthly via the MVME-147-023 SBC to verify channel functionality; a BIST failure signals a faulty channel or isolation circuit. Clean the module’s input terminals quarterly with compressed air (low pressure, 30 PSI max) to remove dust and debris, which can cause intermittent contact. If a channel fails to detect a sensor signal, first test the sensor and wiring (replace twisted-pair cable if damaged) and verify the input voltage—avoid disassembling the module, as internal isolation components are sensitive to static. Store spare Motorola MVME-717 modules in anti-static bags in a climate-controlled environment (15°C to 25°C, 40% to 60% humidity) to preserve isolation performance.

Service and Guarantee Commitment

The Motorola MVME-717 is backed by a 18-month factory warranty (extendable to 48 months via premium service contracts), covering defects in materials and workmanship—including faulty input channels, isolation circuit failures, and LED malfunctions. If a defect is identified during the warranty period, we provide free replacement or repair (with a 48-hour turnaround for in-stock modules) to minimize operational downtime, as digital input failures can disrupt equipment status monitoring and safety interlocks.

Our technical support team offers 24/7 assistance via email and online portals, staffed by engineers specialized in MVME series digital input modules. They can help with Motorola MVME-717 configuration (e.g., jumper setup for TTL signals), BIST activation, and troubleshooting signal detection issues (e.g., noise reduction for high-interference environments). For legacy users, we maintain a stock of critical components (e.g., isolation chips, ESD protection diodes) to support long-term maintenance. We also offer on-site commissioning services, where technicians visit your facility to test the Motorola MVME-717’s channel functionality, verify wiring, and train your team on maintenance best practices. Our commitment to the Motorola MVME-717 extends beyond the sale—we strive to keep your discrete signal monitoring systems reliable, so you can focus on optimizing industrial operations.