Liebert Liqui-tect MC68HC16Z1 - Controller Board Overview; Table 1 Controller Board Components

Introduction
4
1.4 Controller Board Overview
The Liqui-tect panel’s controller board, as shown below, has connectors for two digital outputs for leak
detection alarms, two digital outputs for cable break alarms, two inputs for leak detection cables and
two analog outputs for connecting to a building management system. The board comes complete with
light-emitting diodes (LEDs) to display the status of monitored zones, power connections and other
features necessary to monitor and protect your operation.
Table 1 Controller board components
Item Description More Information
A-Power On/Off LED Indicates when power is supplied to the panel.
2.4: Connect Power to the Liqui-tect Panel
1.5: LED Indicators
B-DIP switch 1
DIP switch used for resetting password to default
and disabling the audible alarm.
3.5: Disable the Audible Horn
6.8.1: Change Password
C-DIP switch 2 Not used. N/A
D-Audible horn Provides audible notification when an alarm occurs. 3.5: Disable the Audible Horn
E-Digital alarm
outputs (Zone 1)
and
G-Digital alarm
outputs (Zone 2)
The Cable Break output connection is a two-state
point (ON/OFF, energized/de-energized). When the
cable is broken or becomes contaminated, an alarm
is created and the contact is energized.
The Leak Detected output connection is a two-state
point (ON/OFF, energized/de-energized). When
water is detected, an alarm is created and the
contact is energized.
Each output can be used to connect to a secondary
warning device such as a horn, light or building
management system.
3.0: Connections and Configuration
3.2: Connecting Alarm Outputs
5.1: View Cable Status
6.5: Setup System - Setup Alarm Outputs
F-Alarm output
LEDs (Zones 1&2)
Indicates the status of the alarm outputs. 1.5: LED Indicators
G-Digital alarm
outputs (Zone 2)
(See description and references for E-Digital alarm outputs (Zone 1) above)
ON
TB3
C28
R16
R17
R18
DS3
DS4
DS5
K1
K2
K4
K5
TX RX
A
1
SW2 SW1
R4
O N
23456 78
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
345678
FaultLEDO
DS6
Reset
A-Power On/Off
LED
B-DIP
switch 1
C-DIP
switch 2
D-Audible
horn
E-Digital alarm
outputs (Zone 1)
F-Alarm output
LEDs (Zones 1&2)
G-Digital alarm
outputs (Zone 2)
H-Status LEDs
M-RS232
LEDs
I-4/20mA output
(Zone 2)
J-4/20mA output
(Zone 1)
K-Input cable
connector (Zone 2)
L-Input cable
connector (Zone 1)
N-RS232
connector
O-SiteScan
Web connector
P-SiteScan
Web LEDs
Q-RS485
LEDs
R-RS485
connector
(not used)
V-LCD
connector
W-LCD contrast
adjustment
X-Reset
switch
Y-24VAC power
connector
Z-Transformer
Module
S-Power
receptacle
T-Power On/
Off switch
U-24VAC
connector