Amtech Axpert-Eazy Series - Page 92

Amtech
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6
Parameter Value = 50 x Desired rpm / Set output frequency
Suppose a line speed of 273 is to be displayed when the output is 90 Hz.
Parameter Value = 50 X 273 / 90 = 151.667 = 152
Now, at 90Hz the motor speed M102 will show (152 X 90 / 50) i.e. 274 rpm.
A106: Frequency Reference Input
This parameter can be used to select the speed reference input to the AC DRIVE. The speed
reference can be independently selected from the given options even if the AC DRIVE is controlled
from any of three sources, i.e. Local (Digital Operation Panel), Terminal or Serial. The different
frequency reference inputs are explained as under. The minimum and maximum limits are decided by
A102 and A103 respectively in all the options.
1. Local
When this option is selected, the set frequency M105 corresponds to local set frequency A101. Use
Digital Operation Panel (keypad) to change the set value. The monitor mode parameter M105 shows
the value of local set frequency A101 and M106 will show keypad as frequency reference input. The
local set frequency A101 will not have any effect in other options.
2. FSV 0-10V
When this option is selected, the set frequency M105 corresponds to analog input FSV. The output
frequency will be minimum at 0 V and maximum at 10 V.
A103
A102
10V
F
V
A103
20mA
F
I
4mA
FSV 0-10V FSI 4-20mA
A102
3. FSI 4-20mA
When this option is selected, the set frequency M105 corresponds to analog input FSI. The output
frequency will be minimum at 4 mA and maximum at 20 mA.
4. FSV 0-5V
When this option is selected, the set frequency M105 corresponds to analog input FSV. The output
frequency will be minimum at 0 V and maximum at 5 V.
5. FSI 0-20mA
When this option is selected, the set frequency M105 corresponds to analog input FSI. The output
frequency will be minimum at 0 mA and maximum at 20 mA.