Distech Controls SC-ARES Manual de instalación - Página 3
Navegue en línea o descargue pdf Manual de instalación para Unidad de control Distech Controls SC-ARES. Distech Controls SC-ARES 5 páginas. Analog resistance module
Imprimir páginaWiring
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Deactivate the 24 Vac power supply until all connections are made to the device to prevent electrical shock or equipment damage. Follow proper
electrostatic discharge handling procedures when installing the device or equipment damage may occur.
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Use 22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit with wiring used to supply inductive loads
such as motors. Make all connections in accordance with national and local codes.
Wiring – Power Input
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Connect the plus DC or the AC voltage hot side to the PWR terminal. The supply common is connected to the COM terminal. The device is reverse
voltage protected and will not operate if connected backward. It has a half-wave power supply so the supply common is the same as the input signal
common.
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Several devices may be connected to one power supply and the input signals all share the same common.
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Ensure the supplied power is within the device ratings. Power supply voltages outside the ratings may cause over-heating, device damage or
unreliable operation.
Wiring – Input Signal
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The analog input signal is connected to the IN terminal. The input signal is referenced to the COM terminal.
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Ensure the INPUT SELECT switches are set for the correct signal type, either voltage or current. The input signal will typically come from a DDC or
BAS analog output.
Wiring – Power Output
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The 20V terminal is a regulated power supply output which provides a 20 Vdc power supply at 30 mA maximum that can be used to operate an
external sensor.
Wiring – Resistance Output
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The signal interface output stimulates a potentiometer.
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Terminal R is the wiper, terminal W is the low end (minimum) of the pot and terminal.
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Terminal B is the high end (maximum) of the pot.
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Figure 5 Wiring Diagram.