TOSHIBA DI335H

Description

Product Description

The TOSHIBA DI335H is a high-density, 32-point DC input module designed for the Toshiba V Series programmable logic controller (PLC) platform. This module serves as a critical interface, allowing the PLC system to monitor the ON/OFF status of a large number of field devices such as push buttons, limit switches, proximity sensors, and selector switches that operate on DC voltage. Engineered for industrial reliability, the TOSHIBA DI335H efficiently consolidates signal acquisition, enabling control systems to make logic decisions based on the state of connected equipment. Its design focuses on maximizing I/O point count within a standard module footprint, optimizing cabinet space and system cost-per-point. The robust construction and stable performance of the TOSHIBA DI335H make it a cornerstone for building efficient automation control panels in various manufacturing and process environments.

Product Parameters

• Function: 32-point DC Input Module.
• Input Type: Sinking (NPN common) or Sourcing (PNP common) depending on specific variant/wiring.
• Input Voltage: Typically 24 VDC (standard industrial voltage).
• Number of Points: 32 points, grouped in common circuits (e.g., 16 points per common).
• Input Current: Standard low-current input (e.g., ~3-5 mA per point at 24VDC).
• Response Time: Fast ON/OFF response suitable for high-speed sequencing applications.
• Isolation: Optical isolation between field input circuits and the internal PLC logic for noise immunity and protection.
• Status Indication: Individual LED indicators for each input channel to show real-time status.
• Form Factor: Modules designed for the Toshiba V Series rack/carriage form factor.

Advantages and Features

The primary advantage of the TOSHIBA DI335H is its high point density, which reduces the number of modules required for large-scale digital input applications, leading to lower hardware costs and a more compact control panel layout. It features excellent noise immunity due to optical isolation, protecting the sensitive PLC backplane from electrical transients on the field side. The module offers easy maintenance with clear per-channel LED diagnostics, allowing technicians to quickly identify faulty field devices or wiring issues. Its compatibility with the robust Toshiba V Series platform ensures reliable operation in demanding industrial conditions with vibration, electrical noise, and wide temperature ranges.

Application Cases in Key Fields

• Automotive Manufacturing: Used extensively on assembly lines to monitor the position of robots, the state of clamping fixtures, and the presence of parts via thousands of sensors.
• Packaging Machinery: Monitors photoelectric sensors, encoder signals, and safety gate switches to coordinate the precise timing of filling, sealing, and boxing operations.
• Material Handling: Integrated into conveyor control systems to track package position via sensors, detect jams, and confirm diverter arm positions.
• Industrial Plant Utilities: Monitors the status of pumps, fans, and compressors (running/stopped, healthy/fault) as part of a larger Building Management System (BMS) or plant utility control.

Comparison with Competing Products

Compared to similar 32-point DC input modules from Mitsubishi (MELSEC Series) or Omron (NJ/NX Series), the TOSHIBA DI335H offers comparable core functionality. The key differentiators often lie in the ecosystem. Competing products may have variations in diagnostic features, terminal block design, or software configuration tools. The TOSHIBA DI335H is optimized for seamless integration and performance within the Toshiba V Series architecture, potentially offering cost advantages and simplified spare parts management for users already committed to the Toshiba PLC platform. Its reliability is on par with other top Japanese PLC brands.

Selection Suggestions and Precautions

1. Voltage and Type Matching: Confirm the exact input voltage (e.g., 12VDC, 24VDC) and circuit type (sinking vs. sourcing) required by your field devices matches the specifications of the specific TOSHIBA DI335H variant you are selecting.
2. PLC Compatibility: Ensure this module is compatible with your specific Toshiba V Series CPU model and rack/carriage unit. Not all modules are compatible with all generations of the platform.
3. Wiring and Fusing: Plan for the significant wiring effort required for 32 points. Use proper wire gauges and consider implementing external fuse protection for each common circuit group to prevent a single short circuit from disabling a large number of inputs.
4. Heat Dissipation: Be aware that high-density modules can generate concentrated heat. Ensure adequate ventilation in the control panel and adhere to the specified installation clearances.
5. Spare Parts: For critical processes, consider keeping a spare TOSHIBA DI335H module on hand to minimize downtime in case of a failure. You can find reliable sources for this module here: TOSHIBA DI335H.

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