Emerson Autochangeover Controllers AC8 - Manual (Page 12)

Introduction
4
1.7 Controller Board Overview
The AC8’s controller board has connectors for eight digital inputs, four analog inputs, eight digital
outputs, two control relay outputs and an EPOP contact input, as shown below. The board comes com-
plete with light emitting diodes (LEDs) to display the status of connected devices, a battery pack for
short-term backup, communications ports, power connections and other features necessary to control
your operation.
Table 1 Controller board components
Item Description For more information, see:
A - Power On/Off
switch
Power switch for the controller board. When switched off, the battery
pack is disabled.
2.4: Connect Power to the AC8
B - Battery pack
Provides battery backup during a power loss to maintain normal
operation of the panel for a minimum of 10 minutes. The analog inputs
will not be functional during a power loss (P/N 133455P1).
2.4.2: Connecting the Battery Pack
7.9.4: Connect Battery
C - EIA422 LEDs Indicates the connection status between the AC8 and SiteScan Web. 1.8: LED Indicators
D - Audible horn Provides audible notification when an alarm occurs. N/A
E - Audible horn
jumper
Jumper to disable the audible horn (factory default is enabled). N/A
F - Common Alarm
connectors
The two common alarm connections are used to connect to a secondary
warning device such as a horn, light or Building Management System
(BMS). When an alarm is present, the contacts close and the external
warning device is activated/notified. The common alarm contacts may
be configured to be reset with the Silence button/command.
3.0: Wiring and Connections
3.4: Connecting Common Alarm
Outputs
7.4: Setup System - Setup Common
Alarm
G - Digital output
status LEDs
Each output has an LED to indicate its status: ON/OFF (energized/de-
energized).
1.8: LED Indicators
H - Control relay
outputs
Each of the two output connections is a two-state point: ON/OFF
(energized/de-energized). Digital and analog inputs may be mapped to
either or both relays to trigger change in state.
An example of a control relay output point is a humidity lock-out.
3.0: Wiring and Connections
3.2.4: Connecting Control Relay
Outputs
5.9: View Control Status
7.11: Setup System - Setup I/O Matrix
I - Manual Override
Switch (outputs)
Placing the switch in the ON position will turn ON, or energize, all eight
outputs simultaneously. This switch removes all automatic output control
from the AC8.
The factory default is OFF (outputs controlled by programming).
7.12: Override Output
BAR CODEBA
R C
OD
E
LIEBERT
BATTERY
LCD CONTRAST
VBATT
START
TB7:
24V INPUT
P23:
BATTERY
485
+ —
+ —
(TOP)
(BOTTOM)
422
RELAY
OUTPUTS
TB4:
(BOTTOM)
2
TB3, TB4, TB5
OUTPUT RELAY
RATINGS: 24V, 3A
CLASS 2 ONLY.
TB2:
CONTACT
INPUTS ASS
EPOP
EPOP INPUT
EPOP
P19
TB1
DIS EN
REV
PFM5
PFM2
(BOTTOM)
(TOP)
4
3
2
1
8
7
6
5
(BOTTOM)
(TOP)
4
3
2
1
8
7
6
5
J11: PHONE
PIN 3-TIP
PIN 4-RING
MODEM
TB5: COMMON ALARM
RELAY OUTPUTS
BOTTOM
TOP
Q11
P11
+ LS1
ENABLE AUDIBLE
(TOP) NO C NC NO C NC
TB1: EPOP
CONTACT
INPUT
TB1, TB2 INPUTS:
DRY CONTACTS ONLY.
TB9: ANALOG
GROUND
AG
+ + — —
+ — + —
3-4 BOTTOM 1-2 TOP
ON
MODEM
CAN TX CAN RX DS83
DS84
1
ON ON
TP1
GND
S2
OFF
DIP
2 3 4 5 6 7 8
OUTPUT1 DS56 DS54 DS63
DS61
DS60
DS62
DS55 DS57
DS59
DS58
DS53
MOP F PROG 574 TX
574 RX
485 RX
485 TX
OUTPUT2 OUTPUT3 OUTPUT4
OUTPUT5 OUTPUT6 OUTPUT7 OUTPUT8
CTRLLOCK
SENLOCK CMN ALR
INPUT1
DS70 DS67 DS66 DS65 DS64 R334
INPUT2 INPUT3 INPUT4
INPUT5
INPUT6 INPUT7 INPUT8 C71
NC
C
NO
NC
C
NO
J - Digital out-
put connectors
M - Digital input
connectors
W - Phone
line
connector
U - EIA485
connector
V - Serial
interface
connector
(RS232/EIA574)
FF - Battery pack
connector
GG - 24VAC power
connector
HH - Transformer
Module
E - Audible horn
jumper
G - Digital output
status LEDs
L - Digital output
loss-of-power
jumper
I - Manual
Override Switch
(outputs)
AA - Modem
K - Status LEDs
B - Battery
pack
A - Power
On/Off switch
DD - LCD
connector
Q - Analog
ground
connector
R - Analog
input
connectors
X - Power
receptacle
Y - Power On/Off
switch
N - Digital input
status LEDs
EE - LCD contrast
adjustment
C - EIA422
LEDs
BB - Modem
status LEDs
S - 12VDC/
24VDC analog
input jumper
T - SiteScan
Web
connector
(EIA422)
D - Audible
horn
CC - DIP switch 1
Z - 24VAC
connector
F - Common
Alarm
connectors
O - EPOP
contact input
H - Control relay
outputs
P - EPOP
jumper