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Installation and Commissioning

8-32 7SJ62 Manual

C53000-G1140-C121-1

8.4 Final Preparation of the Device

Verify all terminal screws are tight and secure. Do not overtighten. Ensure that all pin

connectors are properly inserted. Verify the wires to the terminals are tightly connect-

ed. Make sure the communication cables are firmly connected; however, do not over-

tighten the screws.

Verify that all service settings are correct. This is a crucial step because some setting

changes might have been made during commissioning. The protective settings under

device configuration, input/output masking are especially important (Section 5.1) as

well as the power system data, and activated Groups A through D. All desired ele-

ments and functions must be set 21. See Chapter 6. Keep a copy of all of the in-ser-

vice settings on a PC.

Check the internal clock of the device. If necessary, set the clock or synchronize the

clock if the element is not automatically synchronized. For assistance, refer to Sub-

section 7.2.1.

The Annunciation memory buffers should be cleared, particularly the Event Log and

Trip Log. Future information will then only apply for actual system events and faults.

To clear the buffers, press 0$,10(18 → $QQXQFLDWLRQ → 6HW5HVHW. Refer to

Sub-section 7.1.1 if further assistance is needed. The numbers in the switching statis-

tics should be reset to the values that were existing prior to the testing, or to values in

accordance with the user’s practices. Set the statistics by pressing 0$,10(18 → $Q

QXQFLDWLRQ → 6WDWLVWLF. Refer to Sub-section 7.1.2 if more information is need-

ed.

Press the key, several times if necessary, to return to the default display.

Clear the LEDs on the front panel by pressing the key. Any binary outputs that

were picked up prior to clearing the LEDs are reset when the clearing action is per-

formed. Future illuminations of the LEDs will then apply only for actual events or faults.

Pressing the key also serves as a test for the LEDs because they should all light

when the button is pushed. Any LEDs that are lit after the clearing attempt are display-

ing actual conditions.

The green “581” LED must be on. The red “(5525” LED must not be lit.

Close the protective switches. If test switches are available, then these must be in the

operating position.

The device is now ready for operation.

ESC

LED

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Siemens SIPROTEC 7SJ62 Instruction Manual

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