64(80) Control keypad vacon
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7
Fan control (P6.7.2)
Note! Only the higher power modules of MF3 have been equipped with a cooling
fan, in lower power modules of MF3 the cooling fan is available as optional
equipment.
If the cooling fan has been installed in MF3 it runs continuously, when the power is switched on.
Sizes MF4 and bigger:
This function allows you to control the frequency converter’s cooling fan. You can set the fan to run
continuously when the power is switched on or depending on the temperature of the unit. If the latter function
has been selected the fan is switched on automatically when the heat sink temperature reaches 60°C. The
fan receives a stop command when the heat sink temperature falls to 55°C. However the fan runs for about a
minute after receiving the stop command, as well as after changing the value from 0 (Continuous) to 1
(Temperature).
Enter the edit mode by pushing the Menu button right. The present mode shown starts to blink. Use the
Browser buttons to change the fan mode. Accept the change with the Enter button or return to the previous
level with the Menu button left.
See Figure 7-11 for how to change the fan control function
.
HMI acknowledge timeout (P6.7.3)
This function allows the user to change the timeout of the HMI acknowledgement time.
Note! If the frequency converter has been connected to the PC with a normal cable, the default values of
parametres 6.7.3 and 6.7.4 (200 and 5) must not be changed.
If the frequency converter has been connected to the PC via a modem and there is delay in transferring
messages, the value of par. 6.7.3 must be set according to the delay as follows:
Example:
• Transfer delay between the frequency converter and the PC = 600 ms
• The value of par. 6.7.3 is set to 1200 ms (2 x 600, sending delay + receiving delay)
• The corresponding setting shall be entered in the [Misc]-part of the file NCDrive.ini:
Retries = 5
AckTimeOut = 1200
TimeOut = 6000
It must also be considered that intervals that are shorter than the AckTimeOut-time cannot be used in NC-
Drive monitoring.
Enter the edit mode by pushing the Menu button right. Use the Browser buttons to change the
acknowledgement time. Accept the change with the Enter button or return to the previous level with the Menu
button left. See Figure 7-14 for how to change the HMI acknowledgement timeout.
Figure 7-14. HMI acknowledge timeout
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