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4.1 OVERVIEW
This section contains a step-by-step procedure to test the relay, from setting up communications to the applica-
tion of the voltage and current inputs. You must be familiar with the LPSO-Link software. Refer to Chapter 11:
LPSO-LINK USER GUIDE for more details on using LPSO-Link.
a) HARDWARE SETUP
The appropriate cable to connect the PC to the relay depends on the connections the PC and the LPS-O
require. The LPS-O front port PL-1 accepts a 9-pin male D-connector. Ports PL-2 and PL-3 accept a 25-pin
male D-connector. The PC used may require a 9- or 25-pin connector. A null modem cable is used to connect
two communications ports without a modem. Null modem cables pinouts are shown in Section 8.4.5: NULL-
MODEM CONNECTIONS on page 8–30 for connecting the LPS-O to a PC.
b) PC SOFTWARE SETUP
The software setup consists of starting Windows, loading the software into the PC, starting the program, and
configuring the program to the port and baud rate of the PC and LPS-O. LPSO-Link is a Windows program.
Refer to Chapter 11: LPSO-LINK USER GUIDE or computer documentation for directions on using a mouse,
menu bars, dialog boxes and windows.
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c) LOAD & START LPSO-LINK
1. Refer to Section 11.2: LPSO-LINK INSTALLATION on page 11–2 for directions on loading LPSO-Link into
the PC.
2. Double-click on the group icon that contains LPSO-Link to open the window.
3. Start the program by double-clicking the LPSO-Link icon.
d) SET LOCAL PC CONFIGURATION
1. When you start LPSO-Link the main menu bar is displayed.
2. Click on the SupportFunc > Host Setup > Ports menu item.
3. Select the communication port number that matches the PC port connected to the LPS-O relay (typically it
is COM1). Leave the Base I/O Port Address and Interrupt Request Line (IRQ) values at the default or
change if necessary.
4. Select OK when the port is configured.
e) CREATE TEST UNIT DESCRIPTION
The next step is to create a new Unit Description that matches the baud rate, phone number, and switch code
of the LPS-O. Usually, the LPS-O is accessed locally during testing; therefore, the Phone Number and Switch
Code are left blank. The Baud Rate is set to the factory setting of 9600 baud with one stop bit and no parity;
see General Setting 201: COMPORT1. A setting of COMPORT1 = 9601 specifies 9600 baud, no parity, and 1
stop bit.
1. Select Device > Device Setup from the main menu and click the Add button to create a new device name.
2. In the text box for the Device Name, type TEST and press TAB. A new unit description called TEST is cre-
ated and must now have parameters set for it. Note that the Device Setup dialog box contains spaces for
Unit ID, Data Bits, Phone Number, Switch Code, Baud Rate, Stop Bits, and Parity.
3. In the Unit ID field, enter the Unit ID number of the LPS-O and press TAB. The factory default is 0000.
4. At the Baud Rate prompt, select 9600 and press TAB.
5. In the Data Bits field, select 8 and press TAB.
6. At the Stop Bits prompt, select 1 and press TAB.
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LPS-O Line Protection System
4 ACCEPTANCE/PERIODIC TESTS
GE Power Management
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