Analog I/O module PD645

currentvoltageprogrammable

• Analogue input/output for 0-10 V signals • Programmable in COPP • P-NET via Light-Link • Overload/underload protection and alarming • Advanced internal self-testing • LED for power On and Error indication • Wide power supply range • Wide temperature range • Low power consumption PD 645 can be configured in several different configurations to accommodate various analog input- and output functions. In the following sections, a brief description is given for eachof the possible functions. Each channel in the PD 645 can be configured as an analog output, which means that the PD 645 supports running 4 channels of analog output simultaneously. In this configuration, the output voltage is between the (I/O) terminal and the (-) terminal. The output is monitored and can read back the output voltage, as well as report if excessive current is being drawn from the output during operation. PD 645 can have all 4 channels configured as analog inputs. In this configuration the PD645 measures the voltage between the (I/O) terminal and (In) terminal as a differential measurement. Having this measurement being differential, allows precise voltage measurement even from devices that produce ground potential differences between the PD 645 and the device you wish to measure an output from. If a single ended measurement is required, the (In) terminal must be connected to the (-) terminal and use the (I/O) terminal as input. This will result in the voltage to be measured between the (I/O) and the (-) terminal. PD 645 can be configured to read up to 4 potentiometers, one per channel. In this configuration, the PD 645 supplies the voltage to the potentiometer with the (I/O) terminal,