YASKAWA CIMR-VU BA0001 Technical Manual page 122

5.2 b: Application
Connect input A2 to an external current source such as the one shown in
and set the appropriate signal level for terminal A2 by entering 2 (4 to 20 mA) or 3 (0 to 20 mA) into parameter H3-09. The
terminal A2 function must be set to frequency bias by entering 0 into parameter H3-10
Selection on page 207).
Switching between Main/Auxiliary Frequency References
The frequency reference input can be switched between terminal A1 (main) and terminal A2 (auxiliary). When using this
function:
• Make sure that b1-01 is set to "1" (Frequency reference from analog input).
• Set the terminal A2 function to auxiliary frequency (H3-10 = 2).
• Set one digital input to multi-speed 1 (H1-oo = 3, default for S5).
The frequency reference value is read from
• Terminal A1 when the digital input set for multi-speed 1 is open.
• Terminal A2 when the digital input set for multi-speed 1 is closed.
Figure 5.2 shows a wiring example for main/auxiliary reference switching using digital input S5.
122
DIP switch S1
V I
0 or 4 to 20 mA input
Figure 5.2 Setting the Frequency Reference by Current Input
Figure 5.3 Switching between Analog Reference 1 and 2
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Figure 5.2. Make sure that switch S1 is set to "I"
(Refer to H3-10: Terminal A2 Function
Drive
+V (+10.5 V, 20 mA power supply)
Frequency reference
A1
Frequency reference bias
A2
Analog common
AC