GE Multilin 745

Security
745
Transformer Management Relay
Getting Started
http://www.GEindustrial.com/multilin
1–7
GE Multilin
Security
Installation Note that the relay is defaulted to the Setpoints Not Programmed state before it
leaves the factory. This safeguards against the installation of a relay whose
setpoints have not been entered. In addition, a relay in the
Not Programmed state
blocks signaling of any output relay, and turns off the In Service LED indicator.
Move to the
S1 745 SETUP !" INSTALLATION !" 745 SETPOINTS message. To put the
relay in the
Programmed state, press the VA L U E & or VA L U E % key once and press
ENTER. Enter Yes for the
ARE YOU SURE? message. The In Service LED indicator will
now turn on.
Changing the Passcode To guarantee that the relay settings cannot be tampered with, the user may setup
the passcode security feature.
1. Move to the
S1 745 SETUP ! PASSCODE ! SETPOINT ACCESS message. This message
cannot be edited directly. It simply indicates whether passcode security is
enabled (
SETPOINT ACCESS: “Read Only”), or passcode security is disabled (SET-
POINT ACCESS: “Read & Write”). Each relay is shipped from the factory with set-
point access allowed. The passcode is also defaulted to '0', which disables the
passcode security feature entirely.
2. Press the MESSAGE % key once.
3. Press the VA LU E & or VA L UE % key once.
4. Press the ENTER key to begin the procedure of changing the passcode. The dis-
played message will change as shown. The current passcode is '0', so press the
'0' numeric key. The relay will acknowledge the key press by displaying ‘*’.
5. Press the ENTER key.
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.
745 SETPOINTS:
Not Programmed
SETPOINT ACCESS:
Read & Write
CHANGE PASSCODE?
No
CHANGE PASSCODE?
Yes
PLEASE ENTER CURRENT
PASSCODE:
ENTER NEW PASSCODE
FOR ACCESS:
ENTER NEW PASSCODE
FOR ACCESS: ***
PLEASE RE-ENTER NEW
PASSCODE: