Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 2
Version: 1.0
I0000352
MOUNTING
(Continued)
LCD Installation
The LCD Module should then be gently inserted into the 10 pin connector. Tighten the cover down, using
the (2) 1/16” Allen screws located in the bottom of the housing. Take care to make sure the LCD module
lines up with the enclosure LCD window. The LCD module can be bent if adjustments are needed. A 1/16”
Hex driver is needed to secure the cover to the base.
WIRING INSTRUCTIONS
ACI recommends 16 to 26 AWG twisted pair wires or shielded cable for all sensors. Signal wiring must be
run separate from low and high voltage wires (24/120/230 VAC). All ACI thermistors and RTD temperature
sensors are both non-polarity and non-position sensitive. All thermistor type room units are supplied with
a two-pole terminal block and all RTD’s can be supplied with either a two or three-pole terminal block. The
number of wires needed depends on the application. All wiring must comply with all local and National
Electric Codes.
The ACI/LCD must be powered with either a 24
VAC or 9-35 VDC power source. The ACI/LCD uses
a half-wave bridge rectifier to convert the AC
voltage to a useable DC voltage. Two separate
cables must be pulled for the ACI/LCD to work
properly. One 2 conductor 18 to 22 AWG shielded
cable for the supply voltage and a second 18 to
22 AWG 3 to 8 conductor shield cable for the
Temperature sensor, Set Point and Override
Outputs to the controller.
FIGURE 3:
LAYOUT
TABLE 1:
TERMINAL BLOCK CONNECTIONS
TERMINAL
BLOCK
COM
SEN
SET
O/R
O/R
-(LCD)ONLY
+(LCD)ONLY
CONNECTIONS
Thermistor, Override, and Setpoint Common
to controller analog input
Temperature sensor signal to controller
analog input
Temperature set point signal to controller
analog input
Override signal to controller analog input
Override signal common to controller
analog input
24VAC or 9-35VDC Ground/Common
24VAC or 9-35VDC
TABLE 2:
COMMUNICATION TERMINAL
BLOCK CONNECTIONS
COM. TERMINAL
BLOCKS
TXD
GND
RXD
CONNECTIONS
RS232 Communication (Transmit)
RS232 Communication (Ground)
RS232 Communication (Receive)
Tip (TXD)
Mid (RXD)
Ring (GND)
RS232 Plug Diagram
