GE Power Management
ALPS Advanced Line Protection System
1-9
1 PRODUCT DESCRIPTION
1.3 CUSTOM PROGRAMMABILITY
1
1.3 CUSTOM PROGRAMMABILITY
1.3.1 INTRODUCTION
The ALPS offers a high degree of custom programmability. Custom programming of the ALPS is accomplished using
Xpression Builder. Xpression Builder is a Windows based program that allows the user to design programmable logic and
make I/O (Input/Output) assignments for the ALPS and other GE Power Management relays. Xpression Builder is included
with ALPS software suite on the GE Power Management CD. A complete description of Xpression Builder is included in
Chapter 13: XPRESSION BUILDER.
1.3.2 PROGRAMMABLE LOGIC
In addition to the pre-programmed line protection schemes and configurable I/O, the ALPS relay includes the capability for
the user to design custom logic. This logic may be used to supplement or to replace the built-in scheme logic. The program-
mable logic includes the following: up to 40 logic gates (AND, OR, NOT), each with up to 4 inputs; 8 programmable timers
each with a settable pickup and dropout delay; 8 counters; and 8 latches.
1.3.3 CONFIGURABLE INPUTS
All of the contact converters (Digital Inputs) in the ALPS are user configurable. However, each ALPS relay is shipped with
Default Contact Converter Assignments as shown below and on the default elementary diagrams on pages 1–49 to 1–52.
Each configurable input can be assigned only one flag – assigning more than one flag to a configurable
input may cause maloperation!
Table 1–3: ALPS DEFAULT CONTACT CONVERTER ASSIGNMENTS: SINGLE PHASE MODEL
INPUT
DESCRIPTION
MNEMONIC
INDEX #
NOTE
CC1
RECEIVER #1
RCVR1
12
CC2
RECEIVER #2
RCVR2
13
(if used)
CC3
EXTERNAL STOP CARRIER
STCR
10
(Blocking Scheme Only)
CC4
BLOCK PILOT TRIPPING
BLPTRP
11
(Blocking Scheme Only)
CC5
ENABLE THREE PHASE TRIPPING
ETRP3P
7
CC6
REMOTE TARGET RESET
RESET
20
CC7
BKR 1 52b PHASE A
52B_1A
1
CC8
BKR 1 52b PHASE B
52B_1B
2
CC9
BKR 1 52b PHASE C
52B_1C
3
CC10
BKR 2 52b PHASE A
52B_2A
4
CC11
BKR 2 52b PHASE B
52B_2B
5
CC12
BKR 2 52b PHASE C
52B_2C
6
Table 1–4: ALPS DEFAULT CONTACT CONVERTER ASSIGNMENTS: THREE PHASE MODEL
INPUT
DESCRIPTION
MNEMONIC
INDEX #
NOTE
CC1
RECEIVER #1
RCVR1
12
CC2
RECEIVER #2
RCVR2
13
(if used)
CC3
EXTERNAL STOP CARRIER
STCR
10
(Blocking Scheme Only)
CC4
BLOCK PILOT TRIPPING
BLPTRP
11
(Blocking Scheme Only)
CC5
CC6
CC7
BKR 1 52B
52B_1
1
CC8
BKR 2 52B
52B_2
4
WARNING