Chapter 2 Functions and Configuration
2.1 Function overview
The H0U-88B1G with ACC program supports the following applications:
z It can work together with the high-performance MD320 Series
inverter to form the electric and drive system of inverter-based
screw compressor.
z It can be used for control of the screw compressor driven by
power-line supply.
z Supporting main motor and fan of screw compressor driven by
dual-MDIs respectively. The intake pressure and compressor
temperature can be kept constant through the built-in PID
operation.
z Supporting main motor and fan of screw compressor driven by
power-line. The MDI drive mode and power line drive mode can be
freely combined or switched online so as to maximize the system
reliability and control flexibility.
z Supporting detection of voltage, through which you can set
under-voltage protection, and detection of phase sequence through
which motor reverse rotation is prevented.
z Making screw compressor begin to load after startup, and will not
stop the compressor until heat radiation completes in normal state.
It will immediately close all control outputs upon emergency stop.
z Auto Sleep function on the condition of less air consumption,
helping to save energy and lower equipment deterioration.
z Over-temperature alarm and over-temperature stop protection
functions.
z Over pressure protection function to ensure safety of user’s air pipe
network and devices.
z Fault detecting, instant protection and alarm on temperature and
pressure sensors.
z Able to detect and display operating current of main motor and fan,
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