14
Configuration and Function
During operation of the Control Electronics 8605 without operating unit, the operating status is indicated by two
LED’s.
LED green: Device in operation
LED yellow: Current through valve
LED’s on version without operating unitFigure 4:
The Control Electronics, Type 8605, is suitable for the control of all Bürkert proportional valves with a max. current
in the range from 40 to 2000 mA. It transforms an external standard signal into a pulse-width modulated voltage
signal (PWM) that is supplied to the solenoid coil of the proportional valve (see Figure 5: Basic function of the
Control Electronics, Type 8605). A given value of the average coil current is thereby assigned to each value of the
input signal. The proportional opening of the valve can be set via the coil current.
Loadp
1
0 ... 5/10 V
0/4 ... 20 mA
Standard
Figure 5: Basic function of the Control Electronics, Type 8605
0 to 5 V, 0 to 10 V, 0 to 20 mA or 4 to 20 mA can be set as standard signals.
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