AMPS-24 Manual —
P/N 51907:J2 02/26/2014
13
LED Indicators
Introduction
There are eighteen LEDs that indicate various conditions and troubles. The following table lists and
describes each.
Reference LED Name
Color
Description
AMPS-K2
Board
2
STATUS
Green
•
+5V logic power and software indication
•
Normally slow blink (1 blink/sec)
•
Off in self-test failure or SLC address = 0 (bootloader)
•
Steady on memory Flashing and POR (+5V check)
3
RESET
Yellow
RESET active.
4
GEN TBL
Yellow
•
Slow blink (1 blink/sec) if SLC address = 0 (bootloader)
•
Blinks once then pause in CPS communication failure
•
Fast blink (5 blinks/sec) in self-test failure or programming
•
Steady in any other trouble, POR and memory Flashing
5
TBL BUS
Yellow
Steady when external trouble bus signal received (trouble bus shorted)
6
SLCRX
Green
SLC incoming data
7
SLCTX
Green
SLC outgoing data
8
485TX
Green
485 outgoing data
9
485RX
Green
485 incoming data
10
MAIN 24V
Green
+24V at Main output
11
MAIN 24V TBL
Yellow
•
Steady if in current-limit
•
Fast blink (5 blinks/sec) in hardware failure
•
Steady on memory Flashing, or RAM self-test failure
•
Medium blink (3 blinks/sec) on application code CRC self-test failure
12
AUX 24V TBL
Yellow
•
Steady if in current-limit
•
Fast blink (5 blinks/sec) in hardware failure
• Steady on memory Flashing, PCB rev test failed
• Medium blink (3 blinks/sec) on application code CRC self-test failure
13
AUX 24V
Green
+24V at AUX output
CPS-24
Board
1
LOGIC POWER
Green
+5V logic power
2
TROUBLE
Yellow
Coded trouble indicator: 1 blink = AC failure; 2 blinks - high battery; 3
blinks = low battery; 4 blinks = charger failure
3
EARTH FAULT
Yellow
Ground fault detected
4
AC
Green
AC is on
5
+24V AUX
Green
+24V Auxiliary power
6
+5V AUX
Green
+5V Auxiliary power
Table 1.3 LED Indicators
