SmartFan®Aurora
OPERATION
SmartFan Aurora DC Motor Speed ControlOperation/Installation Manual
Output Voltage Setting (J1): The Aurora can provide power to 12 VDC, 24 VDC or 48 VDC motors. Table 1 describes the function of each setting. If the shunt is removed, the default output voltage is 12 VDC.
Motor Speed Control
Analog control signal input motor control: The voltage applied to the motor is determined by the analog control signal input (0-5V, 0-10V, 0-20mA). The relationship between motor voltage and control signal is shown in Figure 2.
Figure 2: Motor Voltage vs Analog Control Signal Input
Connection to a TachScan-3 Fan Alarm: In a fan control application a SmartFan TachScan-3 fan alarm can be used to monitor fan speed and provide an alarm if a fan drops below a set speed. In addition an automatic full speed signal from the TachScan-3 can be connected to the Aurora. An example of how the Aurora can be interfaced with the Tachscan-3 is shown in Figure 3. In this case, the normally open isolated alarm output (J8:2A, 2B) from the Tachscan-3 is connected to header TB5 on the Aurora. When the Tachscan-3 senses that the speed of one or more fans drops below the trigger speed, the output closes and the Aurora increases the speed of the fans to full. See the Tachscan-3 product pages for additional details. Similar configurations can be used with the Tachscan-9.
Figure 3: Connection diagram for interface of TachScan-3 and Aurora.
Figure 4: Derating curve.
ADDITIONAL MANUAL PAGESOperation/Installation Manual
Use the links below for addtional manual pages or for a complete manual or click on the Operation/Installation Manual PDF link above.
