Siemens 7SA511 manual Binary Input Test, Addr, Index No

7SA511 Line Protection Relay Acceptance Tests

3.6 Binary Input Test

This test checks operation of the binary inputs. A voltage below the minimum value required for an active level (approx. 11 volts, provided that the threshold has not been increased as described in the “Installation” chapter.) is applied to the binary inputs. The event log is then checked to ensure that no events are logged. A voltage at or above the minimum value required for an active level is applied to the binary inputs. The event log is then checked to see that the preset functions assigned to the binary inputs are correctly logged. Only binary inputs that are available in the standard configuration and have a factory preset function assigned are tested.

Test Procedure

1. Connect test equipment to the relay as indicated in Table 3-9.

Table 3-9.Binary Input Test Connections

Relay Terminal Connections

Test Equipment - Relay

+(where applicable)

-(where applicable)

DC Power supply - Power input

DC Voltage source - Binary input 1

4B1

8A2

4B2

8A1

2.Set the voltage source to zero.

Note: The binary input voltage must never exceed the upper relay specification limit defined in the “Specifications” section.

3.Power on the relay.

4.Using the programming procedures described in “Programming the Relay,” ensure the relay settings match those shown in Table 3-10.

Table 3-10.I/O Assignments for Binary Input Test

Addr.

6101

6102

6104

6105

6106

Index No.

001

001

001

001

001

LCD Text

INPUT 1	>Reset LED	NO
INPUT 1 >VT mcb Trip		NO
INPUT 1	>Manual Close	NO
INPUT 1	>Dis. Recept	NO
INPUT 1	>Dis. RecFail	NO

5.Refer to the “Erasing Stored Data” section in the “Maintenance” chapter to reset the event log. All other relay settings should be factory presets.

6.Using the operator panel, display address 5100. “OPERATIONAL ANNUNCIATIONS”

appears in the display. Press to display the first entry in the log.

7.Ensure that the displayed message is “Table empty.”

8.Exit display of the 5100 block. Increase the binary input voltage to 20 volts. Repeat step 6. Ensure that the displayed message matches that shown in Table 3-11. Reduce the binary input voltage to zero.

3-12 July 27, 1995