*Starting, stopping and waiting of the timer.
Normally the ALFA(NET) 804-ADS is started by the external start-keys which are connected in a
resistor-circuit to the contact-input of the timer, see the connection diagram.
Working in direct start mode:
If the timer is started by pushing the external direct start key, the LED ‘ON’ and the relay output
are activated, during the direct-drying time T1. The direct-drying time starts counting down to
zero, after ending this time the LED ‘ON’ and the relay output deactivate and the display shows
the set direct-drying time T1 again. The timer is now ready for the next start.
Working in delay start mode:
If the timer is started by pushing the external delay start key, first the upper left LED is activated to
indicate that the delay time T0 is running, meanwhile the display shows the countdown of the delay
time. After this delay time the drying time after delay T2 is started, the LED ‘ON’ and the relay output
are activated, during the drying time T2. The drying time starts counting down to zero, after ending
this time the LED ‘ON’ and the relay output deactivate and the display shows the set direct-drying
time T1 again. The timer is now ready for the next start.
Setting drying time on hold: (P05=0)
During drying time it is possible to set the timer on hold by pushing the DOWN key. Depending on
the parameter setting of P03 the relay output deactivates (P03=0) or stays activated (P03=1) during
hold. To indicate the hold situation the LED ‘ON’ flashes and the remaining drying time is frozen.
To end this hold situation the UP key must be pressed.
But if the DOWN key is pressed (for the second time) than the drying time is stopped directly, the
display shows for 5 seconds “000" and the ‘ON’ LED deactivates. The timer is stopped completely,
and after the 5 seconds the display shows the set direct-drying time T1 again. The time is now ready
for the next start.
Setting delay time on hold: (P05=0)
During delay time it is also possible to set the timer on hold by pushing the DOWN key. To indicate
the hold situation the upper left LED flashes and the remaining delay time is frozen.
To end this hold situation the UP key must be pressed.
But if the DOWN key is pressed (for the second time) than the delayed drying time is stopped
directly, the display shows for 5 seconds “000" and the upper left LED deactivates. The timer is
stopped completely, and after the 5 seconds the display shows the set direct-drying time T1 again.
The time is now ready for the next start.
Starting with UP key
With parameter P06 can be set the UP button can be used during normal operation for a direct
or delayed start.
*Setting internal parameters.
By pushing the DOWN key for more then 10 seconds, you enter the ‘internal programming menu’. In
the left display the upper and lower segments are blinking. With the UP and DOWN keys the required
parameter can be selected (see parameter table).
If the required parameter is selected, the value can by read-out by pushing the SET key. By pushing
simultaneously the SET key and the UP or DOWN key the parameter value can be changed.
If no key is pushed for 20 seconds, the ALFA(NET) 804-ADS will return to it’s normal operation and
the changes are saved.
2
