Wednesday, July 09, 2008

Universal stepper motor control EXD-U

The universal stepper motor control EXD-U is used in all other commercial refrigeration and air-conditioning applications. Opening of the electrical control valve follows exactly the analog input signal of 0 ....10V or 4.... 20mA. The digital input signal is used to close the valve independently from analog input. When the digital signal switches the controller on again, the valve opens to the opening specified by the analog input. The optional selectable 'Start mode' first opens the valve 1/3 opening and then to the analog set point.

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