Fischer Panda AGT 6000 PVMV-N, Manual

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Intelligent stepless automatic controller for DC-fan
RE0201_V1_UserDoc_r10_eng.fm Kapitel/Chapter A: Intelligent stepless automatic controller for DC-fan - Seite/Page 111
Fischer Panda Datenblatt/Datasheet
intern: Over this temperature sensor the temperature of the output stage is colleted. If the tempera-
ture of the output stage rises over 85°C, the PWM r atio, independently of the coolant tempera-
ture, is set to 100%, in order to avoid the switching losses and cool the output stage down
again. If the temperature of the output stage continues to rise nevertheless and beyond 90°C,
the fan controller switches itself off. NOTE: The cooling of the generator is not ensured
anymore. If the output stage temperature sinks again under 85°C, the fan controller restarts
itself. Such output stage temperatures cannot occur however with intended use of the equip-
ment.
Light emitting diodes: The 3 light emitting diodes (LED's) indicate the operating condition of the fan con-
troller and have the following meaning:
LED (green): Shines with normal operation. After the self check and successful recognizing of the sensors
the fan controller jumps into the normal operating condition, in which the fan regulates, if the
temperature lies in the appropriate range.
LED (yellow): Shines if the fan controller is in slave-mode.
LED (red): Shines with the occurrence of the following errors:
1. Incorrect external temperature sensor. If the temperature sensor for the cooling water is
defective or the feeder line to it interrupted (cable breakh), then the fan is accessed with
100% PWM.
2. Incorrect internal temperature sensor. If the temperature sensor for the output stage is
defective or the feeder line to it interrupted (cable break), then this is indicated over the
LED. The fan controller continues working normally.
3. Overheating of the output stage. If the output stage of the fan controller becomes too hot,
then this switches itself off. Please read in addition the description of the function of the
internal temperature sensor.
A.1.2 Master - Slave - Operation
Two or three fan controllers can be connected with each other that over one temperature sensor for the cooling
water, all fan controllers cam be operated synchronous.
On the connection between master and slave the PWM signal of the masters will transfer. The slave takes over of
it the PWM ratio and the frequency. The slave spends its PWM impulse only then if that of the masters is termina-
ted. Thus even load of the current supply is reached. The second slave (if available) regards the first slave as its
master (see also drawing).
The slave operation is activated automatically, by the presence of a PWM signal at the slave control inlet. As soon
as such a signal is present, the slave follows the control signal and ignores its own adjusts and its own tempera-
ture measuring input. If the master does not spend a PWM signal, because the coolant temperature is under its
starting temperature, the slave drops back into the master operation and uses its own adjusts and analyses its
own temperature measuring input. So that the slave behaves correctly now, a 100k fixed resistor must be atta-
ched at its temperature measuring input, which corresponds to a coolant temperature below the starting tempera-
ture.
The pluggable plug-in for the master-slave-connection and the 100k fixed resistor belong not to the normal scope
of supply and must be ordered separately.