Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 2
FIGURE 3:
BACKPLATE
Refer to the wiring instructions to make necessary
connections. After wiring, attach the cover to the
base by snapping the top of the cover on first and
then the bottom.
Take care when mounting. Check local code for
mounting height requirements. Typical mounting
heights are 48-60”(1.22-1.52m) off the ground and
at least 1.5’(0.5m) from the adjacent wall. The
sensor should be mounted in an area where air
circulation is well mixed, and not blocked by
obstructions.
WIRING INSTRUCTIONS
PRECAUTIONS
• DO NOT RUN THE WIRING IN ANY CONDUIT
WITH LINE VOLTAGE(24/120/230VAC).
• Remove power before wiring. Never
connect or disconnect wiring with power
applied.
• It is recommended that you use an isolated
UL-listed Class 2 transformer when
powering the unit with 24 VAC. Failure to
wire the devices with the correct polarity
when sharing transformers may result in
damage to any device powered by the
shared transformer.
• IF THE 24 VDC OR 24VAC POWER IS SHARED
WITH DEVICES THAT HAVE COILS SUCH AS
RELAYS, SOLENOIDS, OR OTHER
INDUCTORS, EACH COIL MUST HAVE AN
MOV, DC/AC TRANSORB, TRANSIENT
VOLTAGE SUPPRESSOR (ACI PART:
142583), OR DIODE PLACED ACROSS THE
COIL OR INDUCTOR. THE CATHODE, OR
BANDED SIDE OF THE DC TRANSORB OR
DIODE, CONNECTS TO THE POSITIVE SIDE
OF THE POWER SUPPLY. WITHOUT THESE
SNUBBERS, COILS PRODUCE VERY LARGE
VOLTAGE SPIKES WHEN DE-ENERGIZING
THAT CAN CAUSE MALFUNCTION OR
DESTRUCTION OF ELECTRONIC CIRCUITS.
ACI recommends 16 to 26 AWG twisted pair wires
or shielded cable for all transmitters.
ACI recommends using BELDEN 3105 for communi-
cation(Modbus) wiring. This wire has 120 ohm
input impendence. The terminal blocks allow for (1)
or (2) wires to be connected in each position for
daisy chaining. Daisy chain the RS-485 wiring and
do not use “Star” or “T” wiring. Avoid running
communication wires next to AC line voltage wires.
These can be sources of noise that can affect signal
quality.
FIGURE 4:
WIRING
Note: Different models have
different electrical terminals.
Terminal 3 is 0-10VDC output
Terminal 4 is 4-20mA output.
POWER SUPPLY
24VDC
24VAC
RS485
Vout
mA
A
B
NO
(Normally Open)
Relay Output
C
(Common)
1
2
3
5
9
4
6
10
Version: 1.0
I0000941