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2 CALCULATION OF SETTINGS
Any or all of the outputs (T1 to T6) can be monitored regardless of whether or not they are used in a trip circuit.
The setting format for NUM_MON is abcdef , where any position can be a zero (0) or a one (1) as shown in in
the table below:.
Table 2–3: SETTING FORMAT FOR NUM_MON
Position
a
Output
T6
ON
1
OFF
0
As an example, if you are using an LPS-D for three phase tripping, and if outputs T1 and T3 are to be moni-
tored and T2 and T4 are not, the following setting would be used:
NUM_MON = 000101
This setting is entered in to the relay from the LUI in decimal format (that is, NUM_MON = 5).
108: DISPLAYVAL - Present Value Display Mode
This setting determines the mode in which present values ( I , V , etc.) are displayed. Two settings are possible:
PRI displays the values in primary quantities, whereas SEC allows secondary values to be displayed.
109: LANGUAGE
Two settings are possible: ENGLISH or SPANISH.
110: SYSTEM INPUTS - Virtual Inputs
Four virtual inputs are available: SYSIN1 to SYSIN4.
Virtual inputs are memory locations within the relay that can be assigned values via communications or the
local user interface. If the value stored in virtual memory is a 1 (or YES), the virtual input is ON; likewiese, if the
value is 0 (or NO), the virtual input is OFF. The virtual input states are written to like settings: these values are
non-volatile and are available in the memory map.
Each virtual input has two settings in ALPS-Link: YES for asserted 1, NO for non-asserted 0. From the front
keypad, the virtual inputs can be set by following the path SET \ Edit Gen Settings \ Configure \ SYSIN1-4. The
setting range is 0 to 15 (decimal) or 0000 to 1111 (binary), where the least-significant digit represents SYSIN1
and the most-significant digit represents SYSIN4. This value must be entered in decimal format.
The System Inputs can be incoporated into the relay logic with Xpression Builder, allowing for greater control of
the overall logic. They can be treated like any digital input or flag. For example, System Inputs can provide
supervisory functions for dedicated logic segments by disabling or enabling these segments. As such, Xpres-
sion Builder is mandatory for the successful implementation of System Inputs in the relay logic.
GE Power Management
b
c
d
T5
T4
T3
1
1
1
0
0
0
LPS-D Line Protection System
2.2 GENERAL SETTINGS
e
f
T2
T1
1
1
0
0
2
2-
5
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