Technical Material
Specifications for AC Fan Sensor
ACDC fan sensor specifications differ from those below. Please refer to Product Site.
| 5 V (ITEM-20*) | 12 V (ITEM-30*) | |
| Example of model.no | 109S405UL | |
| System | Speed detection, Auto-restart, Open collector | |
| Power supply | 5 VDC±10% At 5 V, 6 mA | 12 VDC±20% At 12 V, 10 mA |
| Recommend sensor circuit output | At Vp= 5 V, I= 100 mA max. | At Vp= 12 V, I = 200 mA max. |
| Trip point | Standard speed: 1700 min-1±10% Low speed: 850 min-1±10% |
|
| Response speed | Standard speed: Startup delay 18 s Detection delay 1 s Low speed: Startup delay 36 s Detection delay 2 s |
|
| Insulation resistance | 10 MΩ min. at 500 VDC (Note) | |
| Dielectric strength | 50/60 Hz, 1000 VAC, 1 minute (Note) | |
| Ambient conditions | Temperature: -10 to +70˚C , humidity: 90% RH max. (at 40˚C) | |
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*[ITEM-20] and [ITEM-30] are printed on the
fan nameplate. Note: Between one end that all sensor leads consisting of brown, yellow and black are tied together and the G terminal or power terminal of the fan. |
Sensor scheme
Example 1: When the AC power for the fan and the DC power for the sensor are turned on at the same time
Example 2: When the AC power for the fan is turned on first, then the DC power for sensor is powered on
Example 3: When the DC power for sensor is first powered on, then the AC power for the fan is turned on
Sensor output circuit
GND (Black) should be shared in case that power supply for sensor circuit (Brown) and that for sensor pull-up (Yellow) are separated.
Last updated: May 2023