Automation Components ACI/TT-RSO-LCD - Manual

Installation and Operation Instructions
ACI/TT-RSO-LCD
2305 Pleasant View Rd. Middleton Industrial Park Middleton, WI 53562
PH: (608) 831-2585 FAX: (608) 831-7407
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READ THESE INSTRUCTIONS BEFORE YOU BEGIN INSTALLATION
The ACI/TT-RSO-LCD is a 2-wire Loop Powered device that must be powered with an +8 to 35 VDC supply voltage
for both the temperature transmitter and the 4 to 20 mA adjustable setpoint. The display is powered from the current
loop from the temperature transmitter.
n TROUBLESHOOTING
Temperature Transmitter Not Working Power supplied to transmitter (+), Verify that there is a common ground
4 to 20 mA Setpoint Not Working Power supplied to Setpoint (+), Verify that there is a common ground
Temperature Transmitter Reading High Verify that the (2) shunts are on the headers in the lower right hand corner
Display Not Working Verify that the Jumper on J8 is on. This completes the loop from the
temperature transmitter to the display. Verify that the display is plugged in
correctly.
n WIRING DIAGRAMS
O/R - + - +
(-) 4-20mA Loop Output to Controller
(Local Setpoint or Temperature)
Note: This designates all
of the connections
to the controller
(-) 4 to 20 mA Loop Output to
Controller (Temperature)
+8-35 VDC Supply Voltage to the
Temperature transmitter
(+) 4 to 20 mA Loop Input from
Transmitter, Setpoint, or Control System
Temp
“After Hours” Override N/O Dry Contact Closure
Sensor Shunts
LCD
+ -
(-) +4-20 mA Setpoint Output
to Controller
(+) +24 VDC Supply Voltage to
adjustable Setpoint Transmitter
4 to 20mA Setpoint Wiring Diagram (Board on Back of Housing)
J8
Note: J8 must be installed
in order to place the
temperature transmitter
in series with the loop
powered LCD display
“After Hours” Override N/O Dry Contact Closure
“After Hours” Override N/O Dry Contact Closure
Wire Access Hole
“After Hours” N/O Override
Pushbutton
n WIRING CONNECTIONS
A minimum of (2) to a maximum of (8) wires must be pulled for the ACI/TT-RSO-LCD to work properly. All of the
Setpoint connections are to be made to the board on the back of the housing. Be aware that the terminals are polarity
sensitive. ACI recommends the use of 18 to 22 AWG twisted pair wires or shielded cable for all sensor installations.
Verify that all connections are made correctly before turning on the power to the transmitter.
Note: When using the temperature transmitter and the LCD only, 2-wires are needed. Connect the
+8 to 35 VDC power supply to the terminal labeled (+ TEMP) and the 4 to 20 mA current loop
output to the controller should be connected to the (-) terminal of the LCD terminal block. Make
sure that Jumper J8 is on.