2-4
ALPS Advanced Line Protection System
GE Power Management
2.2 GENERAL SETTINGS
2 CALCULATION OF SETTINGS
2
As an example, if you are using an ALPS with three phase tripping, and if outputs T1 and T3 are to be monitored and T2
and T4 are not, the following setting would be used: NUM_MON = 0101 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 vir-
tual input is ON; likewise, 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 vir-
tual 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 repre-
sents SYSIN4. This value must be entered in decimal format.
The System Inputs can be incorporated 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, Xpression Builder is mandatory for the suc-
cessful implementation of System Inputs in the relay logic.
2.2.2 COMMUNICATIONS
201: COMPORT1 - Communications Port 1
COMPORT1 sets the baud rate, parity, and stop bits of RS232 serial port 1. The setting format is xxyz where:
Baud Rate
= xx
= 03, 12, 24, 48, 96 (x 10)
Parity =
y
= 0 (none), 1 (odd), 2 (even)
Stop Bits
= z =
1,
2
The baud rate setting of 300, 1200, 2400, 4800, or 9600, must be set to match the baud rate of the modem or serial device
connected to the serial port of the ALPS. The parity and stop bits must match those selected for the serial port of the
remote PC. Normally 1 stop bit is selected. However, certain modems or other types of communications hardware might
dictate using 2 stop bits. ALPS-Link communications software can be configured to match this ALPS setting for baud rate,
parity, and stop bits.
Table 2–3: SETTING FORMAT FOR NUM_MON (SINGLE PHASE TRIPPING MODELS)
POSITION
A
B
C
D
E
F
Output
T6
T5
T4
T3
T2
T1
ON
1
1
1
1
1
1
OFF
0
0
0
0
0
0
Table 2–4: SETTING FORMAT FOR NUM_MON (THREE PHASE TRIPPING MODELS)
POSITION
A
B
C
D
Output
T4
T3
T2
T1
ON
1
1
1
1
OFF
0
0
0
0
