Emerson Liqui-tect MC68HC16Z1 - Manual (Page 10)

Introduction
6
1.5 LED Indicators
The Liqui-tect panel’s controller board has LED indicators that show the status of inputs, outputs and
other board components.
Table 2 LED indicators summary
LED Color Description
Power On/Off LED
Pwr On
Green Indicates whether power is connected
Zone 1 & 2 Alarm Outputs LEDs
K1 – Zone 1 Leak Detected
Green Indicates leak detected for Zone 1
K2 – Zone 1 Cable Break Green Indicates cable problem for Zone 1
K3 – Zone 2 Leak Detected Green Indicates leak detected for Zone 2
K4 – Zone 2 Cable Break Green Indicates cable problem for Zone 2
Status LEDs
LEDO
Green Indicates the panel is working properly – will flash slowly when working
Fault Red Indicates an alarm is present
Reset Red Indicates the panel is being reset
RS232 LEDs
RS232 TX
Green Liqui-tect panel is transmitting information via the RS232 port
RS232 RX Green Liqui-tect panel is receiving information via the RS232 port
RS422 LEDs
RS422 TX
Green Liqui-tect panel is transmitting information over the RS422 port
RS422 RX Green Liqui-tect panel is receiving information over the RS422 port
RS485 LEDs
RS485 TX
Green Not presently used
RS485 RS Green Not presently used
ON
TB3 C28
R16 R17
R18
DS3
DS4 DS5
K1
K2 K4
K5
TX RX
A
1 SW2 SW1 R4
O N
2 3 4 5 6 7 8 1
O N
2
R1
R40
R44 DS7 DS8
R38
C26 C27
C40 C33
U15
U23 C32 U22
C46 U29
U24
U24
U16
DS1
Pwr On
24V Pow
LCD Interlface
3 4 5 6 7 8
Fault
LEDO
DS6
Reset
TB2
R16
R17
R18
R15
DS3
DS4
DS5
DS2
K1
K2
K3
K4
R40
R44
DS7 DS8
R38
Fault
LEDO
DS6
Reset
R82
R81
DS13
DS14
RX TX
DS9
R77
R80
DS11
R79
DS10
R78
DS12
TX RX RX TX
Power On/Off
LED
Alarm output LEDs
(Zones 1&2)
Status LEDs
RS232 LEDs SiteScan Web RS422 LEDs RS485 LEDs