it is more important to have the latest recordings in the memory. The saturationmode is preferred, when the oldest recordings are more important.New triggerings are blocked in both the saturation and the overwrite mode until theprevious recording is completed. On the other hand, a new triggering can beaccepted before all pre-trigger samples are collected for the new recording. In sucha case, the recording is as much shorter as there were pre-trigger samples lacking.8.2.1.10 Exclusion modeExclusion mode is on, when the value set with the Exclusion time parameter ishigher than zero. During the exclusion mode, new triggerings are ignored if thetriggering reason is the same as in the previous recording. The Exclusion timeparameter controls how long the exclusion of triggerings of same type is activeafter a triggering. The exclusion mode only applies to the analog and binarychannel triggerings, not to periodic and manual triggerings.When the value set with the Exclusion time parameter is zero, the exclusion modeis disabled and there are no restrictions on the triggering types of the successiverecordings.The exclusion time setting is global for all inputs, but there is an individual counterfor each analog and binary channel of the disturbance recorder, counting theremaining exclusion time. The user can monitor the remaining exclusion time withthe Exclusion time rem parameter of the corresponding analog or binary channel.The Exclusion time rem parameter counts downwards.8.2.2 ConfigurationThe user can configure the disturbance recorder with the PCM600 tool or any toolsupporting the IEC 61850 standard.The user can enable or disable the disturbance recorder with the Operationparameter under the Configuration/Disturbance recorder/General menu.One analog signal type of the IED can be mapped to each of the analog channels ofthe disturbance recorder. The mapping is done with the Channel selectionparameter of the corresponding analog channel. The name of the analog channel isuser-configurable. The user can modify it by writing the new name to the Channelid text parameter of the corresponding analog channel.Any external or internal digital signal of the IED which can be dynamicallymapped can be connected to the binary channels of the disturbance recorder. Thesesignals can be, for example, the start and trip signals from protection functionblocks or the external binary inputs of the IED. The connection is made withdynamic mapping to the binary channel of the disturbance recorder using, forexample, SMT of PCM600. It is also possible to connect several digital signals toone binary channel of the disturbance recorder. In that case, the signals can becombined with logical functions, for example AND and OR. The user can1YHT530004D05 D Section 8Measurement functions615 series 655Technical Manual
