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The interfaces are adapted to the system conditions by setting the configuration parameters.

7.2.1 Control Interfaces

03 11 LOC: Access lock active

Since the local control panel is always accessible, measures have been taken to allow the local control panel to be locked. A “0” setting means “Locking not possible,” and a setting of “1” means “Locking possible”. The keyboard is then locked by pressing the R key twice at any address.

03 12 PC/ILSA: Test mode USER Fig. 85

When the test mode is activated signals or measured data for PC and ILSA are identified as “test mode”. One of the procedures that demand activation of the test mode is the testing of the output relays via the integrated local control panel.

03 13 LOC: Autom. return addr.

The address to which the display will return after the automatic return time has elapsed is set here. Thus the units will display well- defined information during operation.

03 14 LOC: Autom. return time

If no key on the local control panel is pressed during this set time, the following will occur automatically:

¨ The display returns to the address defined under 03 13

¨ The change-enabling function is canceled. This ensures that the change-enabling function will not remain inadvertently activated over a long period of time. The keyboard is not automatically locked.

03 50 ILSA: Delta V Fig. 87

A measured voltage value is transmitted via the ILSA interface if it differs by the set delta quantity from the last measured value transmitted.

The measured frequency is transmitted via the ILSA interface if it differs by the set delta quantity from the last measured value transmitted.

03 53 ILSA: Delta t Fig. 87

All measured data are transmitted again through the ILSA interface after this time period has elapsed.

03 54 ILSA: Delta P Fig. 87

The active power is transmitted through the ILSA interface if it differs by the set delta quantity from the last measured value transmitted.

03 55 PC: Delta V Fig. 86

A measured voltage value is transmitted via the PC interface if it differs by the set delta quantity from the last measured value transmitted.

03 56 PC: Delta I Fig. 86

A measured current value is transmitted via the PC interface if it differs by the set delta quantity from the last measured value transmitted.

03 57 PC: Delta f Fig. 86

The measured frequency is transmitted via the PC interface if it differs by the set delta quantity from the last measured value transmitted.

03 58 PC: Delta t Fig. 86

All measured data are transmitted again through the PC interface after this time period has elapsed.

03 59 PC: Delta P Fig. 86

The active power is transmitted through the PC interface if it differs by the set delta quantity from the last measured value transmitted.

03 68 PC/ILSA: Device addr. (CU)

03 70 ILSA: Command enable USER Fig. 87

ILSA interface communication enabling function.

Note: If the ILSA interface has been

activated from address 00 80 and there is no ILSA connection or it is inactive, then the command enable should be set at "0". For this setting, the commands are rejected and the time synchronization signal is received and reset; cyclic measured data are not transmitted.

03 71 ILSA: Baud rate Fig. 87

The ILSA interface baud rate setting.

03 74 ILSA: Transm. cycl. data Fig. 87

The measured data that are to be transmitted cyclically through the ILSA interface are selected.

03 76 ILSA: Sig./meas.blck. USER Fig. 87

When the signal and measured data block is activated, no signals or measured data are transmitted through the ILSA interface. Commands to the ILSA interface are rejected.

Note: When the ILSA interface is activated

via address 00 80 and there is no ILSA connection or it is not active, the signal and measured value blocking should be set to“1”.

03 77 ILSA: Contin. general scan Fig. 87

A continuous or background general scan means that the PD 521 transmits all settings, signals and monitoring signals through the ILSA interface during slow periods when there is not much activity. This ensures that there will be data consistency with a

connected control system. The time to be set defines the minimum time difference between two telegrams.

When the signal and measured value blocking is activated, no signals or measured data are transmitted through the ILSA interface. Commands to the ILSA interface are rejected.

7.2.2 Binary Inputs

The PD 521 has two optical coupler inputs for processing binary signals from the system. The connection scheme for the binary inputs is shown in the terminal connection diagrams. The address list gives information about the configuration options for all binary inputs (see

Appendix C).

When configuring binary inputs it is essential to ensure that the same information cannot be processed by two binary signal inputs. This means that a given function can only be assigned to one binary signal input and not to both.

A standard setting that differs from the “default setting” given in the address list has been factory-set. The factory setting is given in the terminal connection diagrams in the Supporting Documents supplied with each device and also in Appendix E of this manual.

In order to ensure that the protection device will recognize the input signals, the triggering signals must persist for at least as long as the time periods given in the following table.

Configurable Functions

Value Description Min. trigger-

ing time Fig.

03 26 MAIN: Deactivate prot. EXT 20 ms 3

03 27 MAIN: Activate prot. EXT 20 ms 3

04 61 MAIN: M.c.b. trip VLS EXT 20 ms 35

04 64 PSIG: Telecom. faulty EXT 20 ms 42

36 34 CBF: Input EXT 20 ms 54

36 38 PSIG: Test telecom. EXT 20 ms 52

36 45 MAIN: Trip cmd. block EXT 20 ms 69

36 46 DIST: Zone extension EXT 20 ms 23

36 47 SOTF: Manual close EXT 20 ms 39

36 48 PSIG: Receive EXT 20 ms 50

36 49 PSIG: Blocking EXT 20 ms 40

36 51 MAIN: CB closed sig. EXT 20 ms 37

36 88 FLOC: Trigger EXT 20 ms 79

36 89 FREC: Trigger EXT 20 ms 81

37 18 MAIN: Man. trip cmd. EXT 20 ms 69

37 70 PC/ILSA: Test mode EXT 20 ms 85

37 72 ILSA: Command enable EXT 20 ms 87

37 74 ILSA: Sig./meas.block EXT 20 ms 87

38 16 MAIN: Starting trig. EXT 20 ms 69

38 20 GFDSS: GF evaluation EXT 20 ms 54

40 16 PASS. Input 1 EXT 20 ms 71

40 17 PASS. Input 2 EXT 20 ms 71

65 01 MAIN: Reset indicat. EXT 20 ms 76

The operating mode of every binary signal input can be selected. It is possible to specify whether the presence or absence of a voltage (mode active “high” or active “low,” respectively) shall be interpreted as the logic “1” signal.

54 01 INP: Fct. assignm. U 1 54 04 INP: Fct. assignm. U 2

Assign functions to binary signal inputs.

54 02 INP: Operating mode U 1 54 05 INP: Operating mode U 2

Specify operating mode of binary signal inputs.

7.2.3 Binary Outputs

The PD 521 has output relays for outputting binary signals. The number and connection scheme of the available output relays are given in the terminal

connection diagrams. The address list gives information about the configuration options for all binary outputs (see Appendix C).

The contact data for the all-or-nothing relays permits them to be used either as command relays or as signal relays. One signal can also be assigned to several output relays simultaneously for the purpose of contact multiplication. A standard setting that differs from the “default setting” given in the address list has been factory-set for some of the freely configurable output relays. The factory setting is given in the terminal connection in the Supporting

Documents supplied with each device and also in Appendix E of this manual.

51 01 OUTP: Fct. assignm. K 1 51 03 OUTP: Fct. assignm. K 2 51 05 OUTP: Fct. assignm. K 3 51 07 OUTP: Fct. assignm. K 4 51 09 OUTP: Fct. assignm. K 5 51 11 OUTP: Fct. assignm. K 6 51 13 OUTP: Fct. assignm. K 7 7.2.4 LED Indicators

The PD 521 has a total of 12 LED indicators for parallel display of binary signals. The address list gives information about the configuration options for all LED indicators (see Appendix C).

A standard setting that differs from the “default setting” given in the address list has been factory-set for some of the freely configurable LED indicators. The factory setting is given in the terminal connection diagrams of the

Supporting Documents supplied with the device and in Appendix E of this manual.

57 01 LED: Fct. assignm. H 1 57 03 LED: Fct. assignm. H 2 57 05 LED: Fct. assignm. H 3 57 07 LED: Fct. assignm. H 4 57 09 LED: Fct. assignm. H 5 57 11 LED: Fct. assignm. H 6 57 13 LED: Fct. assignm. H 7 57 15 LED: Fct. assignm. H 8 57 17 LED: Fct. assignm. H 9 57 19 LED: Fct. assignm. H 10 57 21 LED: Fct. assignm. H 11 57 23 LED: Fct. assignm. H 12

Assign functions to LED indicators. LED indicators H 1, H 2 and H 3 have

7.3 Function Parameters