1–10 745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
SECURITY CHAPTER 1: GETTING STARTED
6. For this example, change the passcode to “123” by pressing the appropriate numeric
keys in the ‘1 2 3’ sequence. The message will change as the digits are entered, with
the end result being as shown.
7. Press the ENTER key to store the new passcode and a confirmation message appears.
As a safety measure, the relay requires you to enter a new passcode twice. This
ensures the passcode has been entered correctly.
8. After pressing the appropriate numeric keys in the sequence ‘1 2 3’, press ENTER. This
flash message appears momentarily on the display and confirms the new passcode is
stored in memory.
9. After a few seconds, the original display returns.
10. Press the MESSAGE UP key. As soon as a non-zero passcode is entered, setpoint
access will automatically become restricted.
1.4.3 Disabling and Enabling Passcode Security
Suppose at some time in the future you want to alter a setpoint. In order to do this, you
must first disable passcode security, make the setpoint change, and then re-enable the
passcode security.
1. Move to message
S1 745 SETUP PASSCODE ALLOW ACCESS TO SETPOINTS. It is
from here that we will disable passcode security. Please note that this message is
hidden, when the passcode security feature is disabled by entering a passcode of “0”.
2. Press the VALUE UP or DOWN key once to select “Yes” and press ENTER. The displayed
message will change as shown.
3. Enter the current passcode and press the ENTER key. This flash message indicates
that the keyed in value was accepted and that passcode security is now disabled.
ENTER NEW PASSCODE
FOR ACCESS: ***
PLEASE RE-ENTER NEW
PASSCODE:
NEW PASSCODE
HAS BEEN STORED
ALLOW ACCESS TO
SETPOINTS? No
ALLOW ACCESS TO
SETPOINTS? No
PLEASE ENTER CURRENT
PASSCODE:
SETPOINT ACCESS
IS NOW ALLOWED
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