For REF615, when I inject any fault, its not coming to events viewer. But in Fault recorder, its coming.
By default all the 615 protection starts and trips are generating a fault record. However all the starts and trips might not be mapped as events. You can find all the predefined events from the Parameter List document, which is distributed in the Connectivity Package documentation add-on.
Events can be configured with HMI Event Filtering tool and for some older 615 series relays by modifying the IEC 61850 datasets. So maybe the event you are looking for has been filtered out.
Please also note that PCM600 Event Viewer is not automatically getting the events from the device. So user needs to actively read the events from the device.