Wiring Basics - TCS Basys Controls
Wiring Basics - TCS Basys Controls
Wiring Basics - TCS Basys Controls
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General Practices – Analog (4-20 mA) Outputs<br />
• Analog Outputs Should Not be Powered<br />
• We use “Current Source” Outputs<br />
…Current is Pushed from the Controller Back to<br />
Ground<br />
• Analog Outputs can be Shared<br />
… as a Current Signal<br />
… as a Voltage Signal (preferable)<br />
Sharing an Analog Output as a Current Signal<br />
S-series Controller<br />
24 VAC<br />
+<br />
-<br />
Not the<br />
Best Solution<br />
AO<br />
Gnd<br />
+<br />
-<br />
+<br />
-<br />
4 to 20<br />
mA DC<br />
device<br />
4 to 20<br />
mA DC<br />
device<br />
24 VAC<br />
Note that the devices must<br />
have separate power supplies<br />
24 VAC<br />
Note: Total Impedance for all Devices MUST be LESS THAN 600 ohms.<br />
If total impedance exceeds 600 ohms, the output WILL NOT reach max. value (20 mA).<br />
Converting a Current Output (4-20 mA) to a Voltage<br />
** Use Resistor to Convert to Voltage Signal **<br />
S-series Controller<br />
S-series Controller<br />
AO<br />
Gnd<br />
+<br />
-<br />
2 to 10<br />
VDC<br />
actuator<br />
AO<br />
Gnd<br />
+<br />
-<br />
1 to 5<br />
VDC<br />
actuator<br />
500 ohm resistor<br />
250 ohm resistor<br />
Note: 500 ohm Resistor is Included with All Controllers with Modulating Outputs<br />
www.tcsbasys.com PH: 800.288.9383 W10
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