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SmartFan® Stratus Manual
Current or Voltage Control Mode
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Unless otherwise specified, Stratus P/Ns 240F400 and 240F400E are factory set to control fans in the Temperature Control mode. To control via voltage, current source or remote transducer make sure SW3 DIP switches 1-8 are set to OFF, set SW2 DIP switches as shown below, then refer to the control mode section you have selected to customize the Stratus for your application.
| Table 2: Setting Control Modes via Switch SW2 |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
| MODBUS |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
| Voltage |
ON |
ON |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
| Current |
ON |
ON |
ON |
ON |
OFF |
ON |
OFF |
ON |
| Temperature |
ON |
ON |
OFF |
OFF |
ON |
OFF |
ON |
OFF |
| Transducer |
Contact CRI Customer Service |
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| USING SINGLE-PHASE OR THREE PHASE MOTORS (switch SW1: #8) |
| The Stratus can control single or three-phase motors from a single-phase power source. To control a single-phase motor, set SW1, #8 to the OFF position, to control a three-phase motor, set SW1, #8 to the ON position.
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USING VOLTAGE OR CURRENT CONTROL MODE |
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Unless otherwise specified, Stratus P/Ns 240F400 and 240F400E are factory set to control fans in the Temperature Control mode. To switch to controlling fan speed via Voltage or Current signal, switch SW1 #7 ON then refer to table 2 for SW2 switch settings. The Stratus can also be customized to accept other control schemes, contact customer service for details.
Setting Idle Speed (switch SW1: #2,3)
The idle speed is the minimum frequency (speed) supplied to the motor. The Stratus can be set for idle speeds of 0, 20, 40 or 60% by setting SW1 DIP switches 2 and 3. The default idle setting is 40%. Other idle speeds can be supplied, contact customer service for details.
| Table 3: Idle Speed DIP Switch Settings |
| Idle Speed |
Dip switch SW1 |
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2 |
3 |
| 0% |
ON |
OFF |
| 20% |
OFF |
ON |
| 40% |
OFF |
OFF |
| 60% |
ON |
ON |
Motor On / Motor Off Feature (SW1: switch #1)
To turn motor(s) off below the set idle speed (see figure 2), set DIP SW1, #1 to the ON position. To keep motor(s) running below the set idle speed, set DIP SW1, #1 to the OFF position.
Control Signal Loss Option (SW1: switch #6)
If the control signal is lost, (less than 4mA in the current mode, less than 1VDC in the voltage mode) when switch 6 is OFF, the motor will automatically switch to full speed. To keep fans idling or off when the control signal is lost (less than 4mA in the current mode, less than 1VDC in the voltage mode) set switch 6 to the ON position.
Figure
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Use the links below for addtional manual pages or for a complete manual (8 pages), click on the Operation/Installation Manual PDF link above.
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