Description
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Product Specifications
- Origin: Japan
- Weight: 0.75 lbs (0.34 kg)
- Dimensions: 7.1 inches x 1.4 inches x 4.3 inches
- Module Type: High-density Digital Output Module
- Output Points: 32-point transistor output (Sinking/NPN type)
- Rated Voltage: 12 to 24 VDC
- Compatibility: Hitachi H-Series PLC (including H-300, H-700, and H-2000 systems)
The Hitachi LUD700A is a high-density transistor output module designed to expand the control capabilities of H-Series PLC systems. This module features 32 independent output points, allowing for the simultaneous management of multiple field devices such as solenoid valves, relays, and indicator lamps. Its solid-state design ensures high-speed switching and a significantly longer operational lifespan compared to mechanical relay modules. To ensure system reliability, the LUD700A is built with robust optical isolation between the internal logic and the external field circuits, which prevents electrical noise and surges from damaging the central processor.
HITACHI LUD700A
HITACHI LUD700A
HITACHI LUD700A
Model Comparison: LUD700A vs. Similar Models
The LUD700A is distinguished by its 32-point high-density configuration, whereas the LUD100 or LUD200 series typically offer lower point counts (8 or 16 points). Unlike the LUR700, which utilizes mechanical relay contacts for higher current switching, the LUD700A uses NPN transistor outputs, making it ideal for applications requiring rapid, repetitive cycling where relay wear would be a concern. The “A” revision specifically denotes a modernized circuit design that offers improved thermal management and lower leakage current in the “OFF” state compared to the legacy LUD700 version.
Operational Guidelines
- Wiring Orientation: As an NPN/Sinking output module, the load must be connected between the positive supply terminal and the module’s output terminal.
- Current Limits: Ensure the total current for each common group does not exceed the module’s rated capacity; over-current conditions can cause permanent damage to the transistor arrays.
- Surge Protection: When driving inductive loads such as DC solenoids or relays, always install a flyback diode (clamping diode) across the load to suppress back-EMF spikes.
- Connection Security: Utilize the standard H-Series removable terminal block for wiring; ensure all screws are tightened to prevent intermittent output failures caused by industrial vibration.
