Dynalco SWT-2000 Speed Switch/Speed Transmitter - Manual (Page 31)

Operating Instructions SWT-2000 DYNALCO
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7.3.4 Math Function
To set a Math function on a speed input please follow the steps below. (Example for Sensor 1):
1. Set the Math function to S1.
2. Set Math function and Sensor 1 hysteresis.
3. The Sensor – hysteresis gets the higher limit.
4. Math function must be set to under run.
5. All logic inputs must be switched off except Sensor 1 and Math function.
6. The two inputs must be combined OR.
System limit settings