YASKAWA GA700 - Page 912

11.8 H: Terminal Functions
912 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
When you input a 5 V signal, the frequency reference will be 100%. Parameter E1-04 [Maximum Output
Frequency] restricts drive output. When you input a 5 V or more signal, the frequency reference will be 100%.
Figure 11.105 Freq Reference When the Analog Input Gain Setting Is Adjusted
• The function set for terminal A1 is set with Frequency Reference [H3-02 = 0], the gain is 100% [H3-03 =
100.0], and the bias is -25% [H3-04 = -25.0].
When you input a 0 V signal, the frequency reference will be -25%.
When H3-01 = 0 [Terminal A1 Signal Level Select = 0 to 10V (Lower Limit at 0)], when you input a 0 V to 2 V
signal, the frequency reference will be 0%. When you input a 2 V to 10 V signal, the frequency reference will
be 0% to 100%.
When H3-01 = 1 [-10 to +10V (Bipolar Reference)], it enables signals of positive and negative polarities. When
you input a 0 V to 2 V signal, and the motor rotates in reverse.
Figure 11.106 Frequency Reference When Negative Number Bias Is Configured
■ MEMOBUS/Modbus Multi-Function AI1 to 3 Function Selection
Let the MFAI function be assigned to MEMOBUS/Modbus register 15C1 to 15C3 (Hex.) [Mbus Reg 15C1h
through 15C3h Input Function]. Use H3-40 to H3-42 [Mbus Reg 15C1h through 15C3h Input Function] to set the
function and use H3-43 [Mbus Reg Inputs FilterTime Const] to set the input filter.
Table 11.69 MEMOBUS Multi-Function AI Command Register
Register No.
(Hex.)
Name Range
*1
Parameter
15C1 Mbus Reg 15C1h Input Function -32767 to 32767 H3-40
15C2 Mbus Reg 15C2h Input Function -32767 to 32767 H3-41
15C3 Mbus Reg 15C3h Input Function -32767 to 32767 H3-42
*1 Set as 100% = 4096.
Figure 11.107 Functional Block Diagram for MEMOBUS Multi-Function AI Command 1