ABB ACS560 - Page 265

Parameters 265
31.31 Frequency trip
margin
Defines, together with 30.13 Minimum frequency and 30.14
Maximum frequency, the maximum allowed frequency of the
motor. If the speed (28.01 Frequency ref ramp input) exceeds
the frequency limit defined by parameter 30.13 or 30.14 by
more than the value of this parameter, the drive trips on
the73F0 Overfrequency fault.
WARNING! This function only supervises the speed in
scalar motor control mode. The function is not
effective in vector motor control mode.
Example: If the maximum speed is 40 Hz and speed trip
margin is 10 Hz, the drive trips at 50 Hz.
15.00 Hz
0.00…10000.00 Hz Overfrequency trip margin. See par.
46.02
31.35 Main fan fault
function
Selects how the drive reacts when a main cooling fan speed
problem is detected.
An event is triggered according to the value of this parameter
(fault, warning or no action)
• if the rotation speed signal from the fan is lower than the
measured fan maximum speed (determined during the fan
ID run)
• if the measured fan maximum speed is lower than the
predefined minimum value
Warning
Fault Drive trips on fault 5080 Fan.0
Warning Drive generates warning A581 Fan.1
No action No action taken. 2
No. Name/Value Description Def/FbEq16
Frequency (25.02)
Time
30.14
30.13
31.31
Overfrequency trip level
Overfrequency trip level
31.31
0