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TRICONEX 3721 communication card

Be recorded as an event without control of a signalling relay.
No signalling relay needed.
Information nevertheless available on changes in the status of the signal.
Pick-up signals activate "General start" (only event)
Tripping signals activate "General trip" (only event) 3) Neither control of a signalling relay nor record as an event.
No signalling relay needed.
No information available on changes of status, i.e. no memory space occupied by unnecessary information.
No influence on "General start" or "General trip". The auxiliary signalling relays are energised via the binary O/P unit 216AB61/216AC61. RE. 216 can have a maximum of six 216AB61 and six 216AC61 units.

The following applies regarding the control of signalling relays:
An energised signalling relay is indicated on the front of the respective 216AB61/216AC61 unit by a LED.
Every signalling channel can be configured to latch. Exception: The defect signal using channels 1 and 2 of the first 216AB61.
A signal from a protection function can excite a maximum of two signalling channels of the first and second 216AB61 units located at divisions 12 and 13 (only up to channel CHO31 in the case of the second unit), otherwise only a one signalling channel.
Exciting of two signalling channels by a common signal: If CHO31 and CHO32 have to be excited by a common signal, then the channels have to be entered in the sequence CHO32, CHO31. All other channels may be entered at random.

Tripping commands 

All protection functions can directly excite the tripping relays. A tripping logic matrix is provided for this purpose, which enables any function to be connected to any tripping channel. A tripping channel can be activated by any number of protection functions. A RE. 216 scheme is equipped with a maximum of six 216DB61 units corresponding to 48 tripping circuits. Tripping signals can be processed by other protection functions. 3.2.5. Measured values Apart from being processed internally, the analogue values measured by the RE. 216 protection functions can also be viewed externally as:
a value: The input variables measured by the protection functions can be accessed and displayed on the VDU of the control unit (personal computer). Their values are generally referred to the secondary voltages and currents at the input of the RE. 216 scheme.
a recorded event: The instant a protection function trips, the value of the corresponding measured variable is recorded as an event.