Sumitomo HF-520 Series - Page 103

102
4.6 Basic Drive Setup Adjustments
Drive
A1
1
3
2
A2
Main Frequency Reference
(voltage input)
0 to 10 V
Auxiliary Frequency Reference
(voltage/current input)
AC
Frequency Reference
Common
1 kΩ
+ V (+10.5 V, 20 mA)
Figure 4.11 Voltage Input for the Main Frequency Reference
Control Circuit Terminal A2 (Voltage/Current Input):
Use control circuit Terminal A2 when supplying the frequency reference with a current
signal between 4 to 20 mA. Use the following switch and parameter settings to congure
Terminal A2 for 0 to 20 mA or 4 to 20 mA input.
Switching between Main/Auxiliary Frequency References
To congure the frequency reference to switch between analog input A1 and A2 (main/
aux frequency switch), use the following setup:
1.
Set the frequency reference source to terminals (b1-01 = “1”).
2.
Set one of the digital inputs to auxiliary reference 1, H1-
oo
= “3” (preset for terminal S5).
3.
Set input signal type of terminal A2 using dip switch S1 and parameter H3-09.
4.
Set the function of analog input A2 to Auxiliary frequency (H3-10 = “3”).
When the digital input assigned in step 2 is o, terminal A1 is the frequency reference
input. If it is closed, the A2 input value becomes the frequency reference. The active
acceleration/deceleration times are used for the change-over between the values