Iv. switch settings – Xylem PC320 Process Controller User Manual

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IV. Switch Settings

Inside the PC320 is a bank of 8 switches which are used to select the sensor type and
power input. Select the switches as follows:

Select only one of SW1 and SW2, leave the other switch off
SW1: ON, Sensor power is 12 volts
SW2: ON, Sensor power is 18-24 volts depending on the voltage input to the

Note this feature is not available when running from a 12 volt battery

SW3: ON, Sensor power is continuous
SW3: OFF, Sensor power is switched on and off by the microprocessor in power

saving mode. If not using power saving mode, set SW3 to ON.

SW4: ON, Sensor type is 4-20mA
SW4: OFF, Sensor type is 0-5 VDC or 0-1 VDC

SW5: ON, Sensor type is 4-20mA or 0-5 VDC
SW5: OFF, Sensor type is 0-1 VDC

SW6: This switch is unused

Select only one of SW7 and SW8, leave the other switch off
SW7: ON, Power input to the PC320 is 18-24 VDC
SW8: ON, Power input to the PC320 is 12 VDC