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🔷The TOSHIBA DI335H is a high-density, high-speed discrete input module for Toshiba FA-M3 / PROSEC T3 / T3H (V-Series Model 3000) programmable control systems. It provides 64 channels of 24 VDC digital input with fast 1 ms-class response, designed to capture rapid switch transitions, pulse trains, emergency-stop hard contacts, and high-speed sensor signals that standard DI cards would miss.
🔷Key Specifications
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Specification
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Detail
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Brand
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TOSHIBA
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Model
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DI335H
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Module Type
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High-speed isolated DC digital input
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System Compatibility
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Toshiba FA-M3 / PROSEC T3 / T3H, V-Series Model 3000 rack
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Input Points
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64 points (8 points/common × 8 groups)
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Rated Input Voltage
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24 VDC (operating range per Toshiba discrete-input list: 24 VDC class)
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ON Threshold
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≥ 16.0 VDC
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OFF Threshold
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≤ 5.0 VDC
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Input Current
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Approx. 5 mA per point @ 24 VDC
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Response Time
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ON delay ≤ 1 ms, OFF delay ≤ 1.5 ms
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Isolation
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Photocoupler isolation per common group (group-isolated)
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Wiring Type
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Connector-type; sink/source capable
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Backplane Power
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5 VDC from rack bus, typ. ≤ 170 mA
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Indicators
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Per-group/channel status LEDs
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Mounting
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Standard I/O slot in T3/T3H rack
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Operating Temp.
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0 °C to +55 °C (typical industrial grade)
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Storage Temp.
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–40 °C to +85 °C
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Environment
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IP20 (cabinet use), EMC-hardened, conformal-coated PCB
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🔷Product Overview
The DI335H is built for applications where milliseconds matter. With 64 inputs packed into a single slim card and 8-point common grouping, it delivers both high channel density and clean signal separation.
Each input group is optically isolated, so inverter noise, ground loops, and transient kickbacks from contactors or solenoids are contained. The 1 ms response window makes it suitable for:
- High-speed part-presence detection
- Encoder/Z-pulse and proximity-switch capture
- E-Stop / trip-hardwire acquisition
- SOE-adjacent event collection
- Packaging, stamping, lithium-battery, and semiconductor indexing
It requires no external 24 V auxiliary for the module logic itself — the field side supplies the 24 V signal, while the card draws 5 V from the backplane.
🔷Core Features
1. High-Speed Signal Capture
- ≤1 ms ON / ≤1.5 ms OFF delay
- Captures short pulses and nuisance-chatter events that slower DI cards filter out
2. High Density, Low Power
- 64 inputs in one slot saves rack space
- Only ~5 mA/point; whole module typically under 170 mA backplane load
3. Group Isolation & Noise Immunity
- 8 groups × 8 points, photocoupler isolation
- Hardware input filtering against motor/drive EMI
4. Sink/Source Flexibility
- Works with NPN and PNP 24 V sensors, dry contacts, and active switches
5. Seamless Rack Integration
- Drop-in for T3/T3H I/O slots
- Direct I/O refresh over backplane; no extra gateway needed
- Mixable with DI334H, IN354, DO/analog modules in same rack
Typical Applications
- Automotive press lines & high-speed conveyors
- Packaging / bottling / labeling machines
- Lithium-cell and PCB assembly indexing stations
- Power-plant auxiliary interlocks and trip acquisition
- Water-treatment pump/valve status collection
- Paper, printing, and textile machine in-position sensing
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