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6 Process Control

TM
The touch screen is the operator’s interface with the HM generator, providing a means of control
as well as status for important machine parameters. The touch screen is directly interface with PLC
and can be considered an input/output device. Numerous system parameters and conditions are
continuously monitored by the PLC. Pre-programmed set points stored in the PLC’s memory are
used for compare. When an abnormal condition occurs, the PLC stop gas generation, sounds a
horn, and opens the system vent valves. The cause of the shut-down will be indicated on the touch
screen.

Standard Features

m Automatic control(PID) of hydrogen production rate(25~100%)
m Automatic control(PID) of difference pressure of hydrogen and oxygen(maintained at below 1psi)
m Automatic control(PID) of Electrolyte temperature(maintained within the set point of±1℃)
m Feed water purity monitor
m Easy to use graphical touch screen interface
m UPS ensuring a safe shutdown in case of power failure
m One touch start and stop functionality
m Easily interlocked with facility instruments
m PLC communication with power supply system

TM
HM -Series Hydrogen Generators TEL : +82-31-451-6431, FAX : +82-31-451-6435