GE 745 TRANSFORMER MANAGEMENT RELAY

5-76 745 Transformer Management Relay GE Power Management
5.6 S4 ELEMENTS 5 SETPOINTS
5
5.6.17 ANALOG INPUT
The 745 has the ability to monitor any external quantity, such as bus voltage, battery voltage, etc., via a gen-
eral purpose auxiliary current input called the analog input. Any one of the standard transducer output ranges
0-1 mA, 0-5 mA, 4-20 mA, or 0-20 mA can be connected to the analog input terminals. The analog input is con-
figured in
S2 SYSTEM SETUP / ANALOG INPUT
and the actual values displayed in
A2 METERING / ANALOG INPUT
.
This section contains the settings to configure the analog input monitoring elements. Included are two analog
input levels, each with a programmable pickup threshold and time delay.
a) ANALOG LEVEL 1 (2)
y ANALOG INPUT
y
[ENTER] for more
This message indicates the start of the
ANALOG INPUT
section. To continue
these setpoints press or press for the next section.
y ANALOG LEVEL 1
y
[ENTER] for more
This message indicates the start of the
ANALOG LEVEL 1(2)
sub-section. To
continue these setpoints press or press for the next section.
ANALOG INPUT LEVEL 1
FUNCTION: Disabled
Range: Disabled / Enabled
ANALOG INPUT LEVEL 1
TARGET: Self-reset
Range: Self-reset / Latched / None
Select
None
to inhibit the display of the target message when the element
operates. Thus an element whose “target type” is
None
will never disable the
LED self-test feature because can not generate a displayable target
message.
ANALOG INPUT LEVEL 1
PICKUP: 10 uA
Range: 1 to 65000 (steps of 1)
Enter the analog input value (in the units programmed) above which the
analog input level 1 element will pickup and start the delay timer.
ANALOG INPUT LEVEL 1
DELAY: 50 s
Range: 0 to 60000 (steps of 1)
Enter the time that the analog input value must remain above the pickup
level before the element operates.
ANALOG INPUT LEVEL 1
BLOCK: Disabled
Range: Disabled / Logc Inpt 1 (2-16) /Virt Inpt 1 (2-16) / Output Rly 1 (2-8) /
SelfTest Rly / Virt Outpt 1 (2-5)
ENTER
MESSAGE
ENTER
MESSAGE