User`s manual

CONTROL KEYPAD 99(110)
7
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.
Figure 7-22. Fan control function
HMI acknowledge timeout (P6.7.3)
This function allows the user to change the timeout of the HMI acknowledgement time in cases where there
is an additional delay in the RS-232 transmission due to use of modems for communication over longer
distances, for example.
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 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.
Figure 7-23. HMI acknowledge timeout
READY
I/Oterm
READY
I/Oterm
enter
READY
I/Oterm
Fan control
Continuous
Fan control Fan control
Continuous
Temperature
READY
I/Oterm
200ms
READY
I/Oterm
enter
200ms
HMI ACK timeout
HMI ACK timeout