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HA20 2-Channel Controller
1
S2
1
RS-R85 / ETHERNET OPTION
U3
U2
P1
*SENSOR INPUT OPTION
Combination Cat-bead/Toxic = 10-0216
Dual Toxic = 10-0220
Dual 4-20mA = 10-0221
*Each Input option listed may also
be configured for 4-20mA Inputs.
See drawings for details on each.
T
1 B
T
2 B
1
2
1
2
+
+
-
-
DC PWR
ALARM
SUPPLY
RESET
INPUT
3 Watts MAX
TB1
TB2
Available for 24 VDC
+Terminal = 24 VDC
Dry contact input for use
primary power input.
- Terminal is open
with optional remote
collector 100mA driver
May also be used as
Alarm Reset switch.
for use with optional 100
battery back-up to AC
Wires must be shorter
primary power source.
than 10 feet & shielded
decibel piezo
TIE TB5 GND to EARTH
annunciator.
if longer than 2 feet.
Figure 3-2. Motherboard Relays and Terminals
HA20 Technical Manual
0010-1167 Rev C
2-Channel Controller
MotherBoard
CR5
U5
Universal Switching Power Supply
PS1
DATA-LOGGER PORT
Connections to J1 & J3 are not covered by CSA
-
Ribbon Cable to 10-0214 Display Assembly
S1
P2
4-20mA OUTPUT OPTION
DISCRETE RELAY OPTION
(See dwg. 10-0223)
(See dwg. 10-0222)
Note: If installed, this option
blocks access to the fuse and
must be removed to replace fuse.
D1
RELAY 1 Indicator
D2
RELAY 2 Indicator
WARNING: For continued protection against
fire replace only with same type and rating
of fuse. (Part # = Littelfuse 217002)
K1
K2
J2
T
3 B
TB4
1
2
1
2
3
4
5
6
+
1
-
+
-
C
N/O
N/C
C
N/O
N/C
AUDIBLE
AUX
RELAY 1
RELAY 2
ALARM OPTION
POWER
DRY CONTACTS
OUTPUT
TB3
TB4
J2
24 VDC power output
5 amp resistive SPDT
for remote devices such
(form C) dry contact relay
as transmitters, lights,
outputs. Use appropriate
relays etc. 350mA MAX
diode / snubber devices
(see Figure 3.0)
when switching inductive
loads.
3.1 Input / Output Optional PCB's
Assy.10-0215
P1, P2 and P3 connectors on the motherboard offer unique positions
for I/O options described in this section. A screen appears briefly after
power up indicating what options types are connected.
3.1.1 Optional Analog Input PCB
(P/N 10-0221-2)
J3
Transmitter input PCB option #10-0221, shown in Figure 3-3, is
J1
available for interfacing the HA20 to field transmitters with 4-20mA or
voltage outputs (0-2 VDC max). TB1 provides Channel 1 & Channel 2 +
Common
TP1
(0-volts)
/ - terminals for receiving analog inputs. R1 / R2 are 100 ohm precision
socketed termination resistors between each channel's signal + and -
P3
4-20mA input terminals. These may be removed if voltage inputs are to
be applied. TB2 provides 2-terminals connected to the HA20 internal
24 VDC power supply for powering external transmitters. Figure 3.3
shows correct wiring for both 2-wire and 3-wire transmitters.
2-AMP FUSE
(5 x 20mm)
TB5
1
2
3
L1
L2
GND
~
100-240 VAC
.45A 50/60 Hz
AC POWER
TB5
Universal 100-240VAC
primary power source
terminals.
Important: GND terminal
3 must be tied to earth
for correct shielding of
incoming signals.
SHOCK HAZARD
RISK OF ELECTRICAL
SHOCK-DISCONNECT OR
TURN OFF POWER
BEFORE SERVICING THE
EQUIPMENT
3-3
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