The **H7CC-R11WD** is a high-performance digital tachometer and rotation meter manufactured by **Omron**. It belongs to the H7CC series, designed for industrial automation to measure speeds, flow rates, and frequencies. --- ### 1. Technical Specifications The "R11WD" suffix indicates specific electrical characteristics, such as the output type and power supply. | Feature | Specification | | :--- | :--- | | **Function** | Tachometer (Rotation/Speed/Flow measurement) | | **Supply Voltage** | 12 to 24 VDC / 24 VAC (50/60 Hz) | | **Input Type** | No-voltage (NPN) or Voltage (PNP) input | | **Output Type** | Relay Output (SPDT) + Transistor Output | | **Connection** | 11-pin Circular Socket | | **Display** | 6-digit Negative LCD with backlight (multi-color) | | **Max counting speed** | 10 kHz (selectable) | --- ### 2. Key Electronic Components & Interfaces #### A. Input Circuitry The device is compatible with various sensors (Proximity, Photoelectric, or Rotary Encoders). * **Voltage Input:** High (5 to 30 VDC), Low (0 to 2 VDC). * **No-voltage Input:** Short-circuit impedance 1 kΩ max. * **Built-in Power Supply:** It provides a 12 VDC (approx. 100mA) output to power external sensors directly. #### B. Output System It features a dual-output mechanism for control and signaling: 1. **Contact Output:** A mechanical relay rated at 3A at 250 VAC. 2. **Transistor Output:** An NPN open collector rated at 100 mA at 30 VDC, ideal for high-speed switching or PLC interfacing. #### C. Display & Visuals * **Color Change Logic:** The display can be programmed to change color (Green/Red) based on the output status (e.g., turning Red when a speed threshold is exceeded). * **Replacement Time Notification:** The unit tracks the age of its internal electrolytic capacitors and warns the user when the service life is nearing its end. --- ### 3. Wiring Configuration (11-Pin) The 11-pin layout is standard for Omron industrial timers/counters: | Pin Number | Function | | :--- | :--- | | **1 & 11** | Power Supply (12-24 VDC / 24 VAC) | | **2 & 10** | External Sensor Power (12 VDC / GND) | | **3** | Signal Input (CP1) | | **5, 6, 7** | Relay Output (Common, NO, NC) | | **8 & 9** | Transistor Output | --- ### 4. Application Use Cases * **Conveyor Speed Monitoring:** Measuring the RPM of a motor via a proximity sensor. * **Flow Rate Calculation:** Converting pulses from a flow meter into Liters per minute. * **Production Rate Display:** Counting units per hour in a manufacturing line.