Product manual
YD240 rotational-speed transmitter
Input requirements, terminals, DIN-rail installation context and ordering examples.
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Signal conversion
YD240 extracts a rotational-speed signal and converts the measured speed to a 4–20 mA analog output or an RS485 communication output, according to the ordered configuration. The input selection includes an eddy-current sensor, passive magnetoelectric sensor or Hall-effect speed sensor. The number of pulses per revolution must match the monitored target.
Technical specifications
| Parameter | Value |
|---|---|
| Input signal frequency | 0.4–40,000 Hz |
| AC input amplitude | Greater than 300 mV |
| Output | 4–20 mA or RS485 |
| Stated load limit | At most 750 Ω |
| Accuracy | Better than ±1% full scale |
| Supply | 24 V DC |
| Resolution | 0.05% |
| Operating temperature | −20 to 75 °C |
| Operating humidity | 5–90% |
| Protection | IP44 |
| Dimensions | 30 × 79 × 56 mm |
Temperature drift is printed as ≤0.1%°C; the source does not clarify the unit formatting.
Terminal functions and installation
The text identifies the power/output terminals as 24V for the external 24 V supply, COM for external supply ground, and Iout for the 4–20 mA current output. The sensor-input group identifies +24V as sensor power, COM as sensor supply ground, and Vin as sensor signal input.
The source includes a physical terminal view, connection schematic, DIN-rail installation view and rail/base removal view. The text does not specify the pin positions or a step-by-step removal procedure. Confirm the terminal layout and rail attachment against the drawing for the supplied transmitter before connecting it.
Range, input and pulse configuration
The ordering structure is YD240-A-B-C-D.
| Field | Codes described |
|---|---|
| A: speed span | 01 = 0–1000 rpm; 02 = 0–2000 rpm; 03 = 0–3000 rpm; further spans indicated |
| B: input | 01 = YD9800 eddy-current sensor; 02 = YD60 passive magnetoelectric sensor; 03 = YD62 Hall sensor |
| C: pulses per revolution | 01 = 1; 02 = 2; 03 = 3; further values indicated |
| D: output | 01 = 4–20 mA; 02 = RS485 |
The example YD240-01-03-15-01 specifies a 1000 rpm span, YD62 Hall sensor input, 15 pulses per revolution (15 teeth) and a 4–20 mA output. Range and pulse count are separate fields; the tooth count must not be mistaken for a speed-range code.