ABB SM500F User Manual

Also see for SM500F: User guide Commissioning instructions Manual Instruction Instruction

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ABB SM500F User Manual Manual pdf 114 page image

SM500FField mountable paperless recorder 7 Configuration112 IM/SM500F Rev. Z7.8.6 F0 (Sterilization Optimization) ConfigurationCalculationThe recorder's F0 standard sterilization calculation is based on Ft @ T of 121.1 °C and Z of 10 °C whereFt = equivalent sterilization time of the sterilization procedure under temperature (T) conditions with a givenZ value.The recorder also adjusts Ft to compensate for changes in temperature in order to achieve a constantsterilization affect. The value used is D; a time value with a default setting of 1 minute.The F0 algorithm used by the recorder is:The result of the F0 calculation is displayed in minutes in the Digital Indicator view (see Fig. 4.5, page 38)and in the totalizer log (see Fig. 4.8, page 45).Note. The totalizer tabs are displayed only if the Totalizer option is enabled. Current F0 values are displayed in the Indicator view – see Section 4.5, page 38 (Operation) andSection 7.7.3, page 89 (Configuration) respectively. Only Totalizer A on all recording channels can be configured to display an F0 value. If Totalizer Ais configured to display an F0 value, Totalizer B on the same channel is disabled automatically.Set 'Count enable' to 'F0'.If 'Wrap enable' is set to 'On', the total is reset automatically to the 'Presetcount' value once the 'Predetermined count' value is reached.If 'Wrap enable' is set to 'Off', the count stops when the 'Predeterminedcount' value is reached.Note. A wrap pulse, with a duration of 2s, occurs if the total reaches the'Predetermined count' value and 'Wrap enable' is set to 'On'. If 'Wrapenable' is set to 'Off', the wrap pulse becomes active when the'Predetermined count' value is reached and remains active until the F0value is reset. The pulse can be assigned to a relay, digital output or digitalcounter.Enter the F0 tag to be displayed in the Indicator view and the Totalizer logarchive (6 characters max).Note. The default tag text includes 'F0' to distinguish an F0 value in thetotalizer log but this can be changed.F 0 SampleTime 10 T 121.11  Z –   60 F 0previous+ =