ADLINK Technology ND-6021, User Manual

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Initialization & Installation 1-1
1. Introduction
1. 1. About the NuDAM Analog Output Modules
The NuDAM provides an analog output modules which can convert
the digital command to analog. The basic features of each module
are shown here.
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NuDAM-6021 : analog signal output module with safety functions
•
NuDAM-6024 : 4 channel analog output module
1. 2. Overview of NuDAM-6021
What is NuDAM-6021 ?
ND-6021 is an analog signal output module. It receives the digital
command from host computer through RS-485 network. The format
of the digital value can be engineering units, hexdecimal format or
percentage of full-scale range(FSR). A microprocessor is used to
convert the digital command to digital value to send to DAC. The DAC
converts the digital value into analog form. The analog output can be
either voltage or current output.
The ND-6021 is designed for safety. It provides many safety functions
such as isolation, watchdog, and power on safe value. The
opto-isolators provide 5000Vrms isolation voltage to isolate the digital
section and the remote controlled analog equipments. The damage
of power surges is avoided.
Another safety fucntion is the watchdog. Whenever the host is loss
contact with the remoted NuDAM module, or the micro-processor is
down, the module will reset itself and send the safety value to the
analog output therefore the industry safety is guarantee. The safety
value / power-up value can be set by configuration software.