DK-45 Kullanım Kılavuzu V1.0 (22.09.2016)
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If E.56 Dryer Delay Timer is adjusted to a value other than zero, the “STARTUP PROCEDURE”
described in chapter 4 will be performed in a different manner.
If the timer is not zero, then the MAIN relay output will be activated before the STAR relay and will stay
active during E.56 Dryer Delay Timer.
Thus the air dryer supplied from the main contactor will be run during the desired period before the
compressor starts producing compressed air.
When the timer is elapsed, the STAR relay output becomes active and the startup predure is performed
as explained in chapter 4.
This feature is designed to prevent the motor running unnecessarily off_load, consuming energy.
When the pressure reaches E.04 Stop Pressure limit (or the pressure switch opens) the LOAD relay will
open. During E.25 Unload Timer or E.27 Safety Delay Timer (whichever longer) the motor continues to
run, then stops.
If E.26 Variable Unload Timer parameter is adjusted to 1 and the period where the motor is at rest is
longer than E.25 Unload Timer then the controller decides that the motor has run unnecessarily longtime
off_LOAD and shortens the Unload Timer for the next cycle by 1 minute, but never below 2 minutes.
If the compressor is stopped with the STOP button or programming mode is selected, then the
Unload Timer is reset to E.25 Unload Timer parameter value.
If E.47 Motor PWM Signal (0-10V) parameter is set to 1 then the PID controlled analog output of the
module is activated. The analog control signal is output from the terminal number 19, 0-10V OUT.
The analog output will control the motor speed in order to match E.48 PWM Set Pressure. The control is
performed by changing the analog output voltage between 0 and 10VDC.
Before starting the control process, the module will wait for the compressor to heat-up. When the
temperature T1 is above E.54 PID Start Temperature the module will decide to provide analog output.
After E.53 PID Control Delay it will start controlling the motor speed.
PID control coefficients may be adjusted through E.49 PID P Value, E.50 PID I Value, E.51 PID D Value
and E.52 PID I Inverse Value parameters.
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