Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 2
Version: 2.0
I0000857
+VDC (Red Wire)
4 to 20mA Output
(White Wire)
RTD Wires
(100 Ohm RTD Brown Wires)
(1K Ohm RTD Black Wires)
+VDC (Red Wire)
GND (White Wire)
Voltage Output
(Yellow Wire)
(1 to 5, 2 to 10VDC)
RTD Wires
(100 Ohm RTD Brown Wires)
(1K Ohm RTD Black Wires)
Current Output
(4 to 20 mA)
Current Output
(4 to 20 mA)
Voltage Output
(1 to 5, 2 to 10VDC)
Voltage Output
(1 to 5, 2 to 10VDC)
+VDC
4 to 20mA Output
+VDC
GND
Voltage Output
(1 to 5, 2 to 10VDC)
+
- GND VOUT
RTD
+ -
RTD
SPAN
ZERO
SPAN
ZERO
SPAN
ZERO
SPAN
ZERO
POTTED UNITS
STANDARD UNITS
FIGURE 3:
WIRING DIAGRAMS
VAC
FIGURE 2:
OUTSIDE MOUNTING
WIRING INSTRUCTIONS
PRECAUTIONS
• Transmitter is powered by 24 VDC only.
• Remove power before wiring. NEVER
connect or disconnect wiring with power
applied.
• When removing the shield from the sensor
end, make sure to properly trim the shield to
prevent any chance of shorting.
• When using a shielded cable, ground the
shield ONLY at the controller end. Grounding
both ends can cause a ground loop.
• If the 24 VDC power is shared with devices
that have coils such as relays, solenoids, or
other inductors, each coil must have an MOV,
DC 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 electron-
ic circuits.
Open the cover of the enclosure. ACI recommends
16 to 26 AWG twisted pair wires or shielded cable
for all transmitters. Twisted pair may be used for
2-wire current output transmitters or 3-wire for
voltage output. Refer to
FIGURE 3
(right) for wiring
diagrams. All wiring must comply with local and
National Electric Codes. All ACI TT and TTM tempera-
ture transmitters can be powered from either an
unregulated or regulated 8.5 to 32VDC power
supply. The TT and TTM DO NOT support an AC
input. All TT and TTM temperature transmitters are
reverse polarity protected. After wiring, attach the
cover to the enclosure.
The minimum voltage at the transmitter power
terminal is 8.5V after load resistor voltage drop.
•
249 Ω load resistor (1-5 VDC output) = 13.5 V min supply
voltage
•
499 Ω load resistor (2-10 VDC output) = 18.5 V min
supply voltage
Note:
Adding extra wire length between the
sensor and transmitter board may affect accuracy.
Recommended 1-2 ft
(0.3-0.6 m) Below Eave
Install Sensor
Downward
Roof
Ground
