Barnant Company 689-0010 Operating Instructions Manual
                                            | |
Contents
| 
16Deviation LODeviation LO adjusts the alarm value as the SP temperature value is adjusted.Whatever value deviation LO is set at, it will remain the same until changed.Refer to Figure 22.ALARM MODEDEVIATION LOFIGURE 22. DEVIATION LO SCREENFor example: if the Deviation LO value is set for 10 degrees Fahrenheit andthe SP temperature is set for 50 degrees Fahrenheit, the alarm will trigger at40 degrees Fahrenheit. If the SP temperature value is changed to 45 degreesFahrenheit, the Deviation LO will trigger the alarm at 35 degrees Fahrenheit.If the Control Action is set to HEAT and the alarm condition exists when theRUN key is pressed, the alarm will not be activated. The PV temperaturemust first rise above the alarm setpoint before the alarm is enabled. Thisallows for normal system startup without activating the alarm.Select the DEVIATION - LO screen by pressing the MENU key. The followingscreen will appear (refer to Figure 23). Move the cursor to the left using theLEFT arrow key. When the setting is correct, press the MENU key to enterthat setting and to move the program to the alarm hysteresis screen.DEVIATION ALARMLO XXXXX °FFIGURE 23. DEVIATION LO SETTINGS SCREENDeviation HIDeviation HI will adjust the alarm value as the SP temperature value is ad-justed. Whatever value Deviation HI is set at, it will remain the same untilchanged. Refer to Figure 24.ALARM MODEDEVIATION HIFIGURE 24. DEVIATION HI SCREEN |
manualsdatabase
Your AI-powered manual search engine