8-24 ALPS Advanced Line Protection System
GE Power Management
8.4 REMOTE COMMUNICATION INTERFACE 8 LOCAL USER INTERFACE
8
8.4 REMOTE COMMUNICATION INTERFACE 8.4.1 HARDWARE SWITCHES
There are hardware switches on the Input Board (see Chapter 3: HARDWARE DESCRIPTION) that inhibit the Remote
Breaker Operations, the Remote Settings Change and the Remote Enable/Disable Outputs functions. Please note that
these switches are shipped from the factory in the down position and these functions are enabled.
1. The proper sequence for setting these switches is as follows:
2. Remove four thumbscrews holding the plastic cover in place and lay aside with plastic cover.
3. Turn the power switch off on the front panel.
4. Remove DC power from the ALPS.
Completely power down the relay by disconnecting the control DC power and removing all voltage inputs
to the rear terminals prior to opening the unit. Dangerous or lethal voltages may be present inside the unit
even if the power switch is OFF!
5. Remove the four 1/4” hex nuts at the four corners of the front panel and carefully remove the front panel.
6. Disconnect the power and the ribbon cables from the front panel and lay the panel aside
7. The Switches are located in the middle on the front edge of the board. Move the switches up to turn a function off. Fig-
ure 3–5: INPUT BOARD DIAGRAM on page 3–7 indicates the location of the jumpers on the board.
8. Reinstall the PC board retainers with the four phillips head screws.
9. Reinstall the power cable and the bus card on the PC boards.
10. Reconnect the LUI ribbon cable and the power cable to the front panel and install the front panel with the four 1/4” hex
nuts.
11. Turn on the front panel power switch.
12. Restore DC power to the relay.
13. Reinstall the plastic cover with the four thumbscrews.
14. The hardware switches are defined below.
8.4.2 MODEM CONNECTIONS AND SETTINGS
When establishing communication between the relay and a remote PC, two modems connected by a phone line are
required. One modem is located at the relay and the other modem at the PC. The pin connections for the cable that con-
nects the modem with either the relay or the PC is shown in Figure 8–3: 25-PIN NULL MODEM CABLE on page 8–23. Both
modems must be "Hayes-compatible," meaning that they accept standardized modem configuration commands first devel-
oped by Hayes. This is necessary since the ALPS-Link communications software that runs on the PC sends a Hayes-com-
patible command string to the modem located at the PC. The ALPS does not send any configuration commands to its
modem. Both the relay modem and the PC modem must be uniquely configured to permit logging into and communicating
with the relay using ALPS-Link software.
The required configuration settings are presented as changes to the factory-default configuration settings for a Hayes V-
Series 2400 SmartModem. The default settings are listed below.
Table 8–3: HARDWARE SWITCH DESCRIPTIONS
SWITCH FUNCTION
KBD EN ON Down position enables keyboard operations. Up position disables.
RM CHG SET ON Down position enables remote settings changes. Up disables.
RM BRKR ON Down position enables remote breaker operations. Up disables.
B1 P Y0 &K3 &S0 S7=30 S11=95 S26=1
E1 Q0 &C0 &L0 &T4 S8=2 S12=50 S36=1
L2 V1 &D0 &P0 &X0 S9=6 S18=0 S37=0
M1 W0 &G0 &Q5 S0=0 S10=14 S25=5 S38=20
N1 X4 &J0 &R0 S6=2
WARNING
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