BONFIGLIOLI ACTIVE Cube ACU 401-25 User Manual

18.2 Fan
The switch-on temperature of the heat sink fan can be set with the parameter
Switch-on temperature 39.
If mains voltage is applied to the frequency inverter, and the heat sink temperature
exceeds the set temperature, the heat sink fan is switched on. Independent from
parameter Switch-on temperature 39
, the heat sink fan will be switched on, as soon
as the frequency inverter is switched on and enabled and the start signal is received.
To protect the device a device fault is triggered when reaching an internal switching
off temperature threshold.
If the heat sink temperature drops below the set temperature by 5 °C, or if the con-
troller enable signal is inhibited, the heat sink fan is switched off when the minimum
ON-time has elapsed.
The minimum ON-time of the heat sink fan is set internally to 1 minute. When the
temperature drops below the Switch-on temperature 39 during this time since start-
ing, the fan will continue to operate until the running ON-time is reached.
Operation mode 43 for digital outputs additionally enables the control of an ex-
ternal fan. Via the digital output, the fan
is switched on if the controller is released
and Start clockwise or Start anticlockwise are switched on, or if the Switch-on tem-
perature
39 for the internal fan was reached.
Like in the case of the internal heat sink fan, the minimum ON-time of the
external
fan is 1 minute.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
39 Switch-on temperature 0 °C 60 °C 30 °C
18.3 Bus controller
DANGER
Disconnect the frequency inverter
from mains voltage and protect it against being
energized unintentionally.
Verify that the frequency inverter is discharged.
Wait for 3 minutes until the DC link capacitors have discharged before starting to
work at the unit.
When the frequency inverter is disconnected from power supply, the mains, DC-
link
voltage and motor terminals may still be live for some time.
In order to be able to control the drive, the digital controller inputs S1IND/STOA and
S7IND/STOB must be connected and set to "High
-Signal" in order to enable the ou
t-
put stage.
The frequency inverters can be extended by different options for data communication
and can be integrate in an automation and control system in this way. Parameteriza-
tion and commissioning can be done via the optional communication card, the oper-
ating unit or the interface adapter.
06/13 Operating Instructions ACU 241

BONFIGLIOLI ACTIVE Cube ACU 401-25 Specifications

General

Brand	BONFIGLIOLI
Model	ACTIVE Cube ACU 401-25
Category	Inverter
Language	English