The TECO 20HR-D (24VDC, 2W) is a next-generation programmable logic relay designed for small to medium-scale automation tasks. With firmware version V2.3 and part number 435084115723, this unit combines the flexibility of a PLC with the simplicity of a smart relay.
Key Specifications
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Model: 20HR-D
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Power Supply: 24V DC (±20%)
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Power Consumption: 2W (max)
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I/O Configuration:
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12 Digital Inputs (sink/source, including 4 high-speed counters up to 5kHz)
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8 Relay Outputs (2A per point, resistive load)
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Display: 4-line LCD with backlight (128×64 pixels)
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Memory: 4000 steps (Flash)
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Programming: Via front panel keys or PC software (FBs/WinProLadder compatible)
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Communication: Built-in RS485 (Modbus RTU master/slave)
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Firmware Version: V2.3
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Certifications: CE, UL, RoHS
Features & Benefits
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Expandable – Supports up to 7 expansion modules (digital, analog, temperature).
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Real-time clock – For time-based control and scheduling.
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High-speed counting – 4 independent 5kHz counters for encoders or pulse monitoring.
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User-friendly programming – Ladder logic or FBD. No advanced PLC skills required.
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Compact DIN-rail design – Saves panel space (90×70×56 mm).
Applications
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Conveyor belt control
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Lighting and HVAC automation
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Pump and valve sequencing
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Small machine control (packaging, labeling)
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Irrigation and greenhouse systems
