YASKAWA A1000 Technical Manual page 107

Status
Open Output frequency or motor speed and frequency reference are not both within the range of L4-01 ±L4-02.
Closed Output frequency or motor speed and the frequency reference are both within the range of L4-01 ±L4-02.
Note: Frequency detection works in forward and reverse. The value of L4-01 is used as the detection level for both directions.
Frequency
reference
User Set
Speed Agree 1
n H3-01: Terminal A1 Signal Level Selection
Selects the input signal level for analog input A1.
No.
H3-01
Setting 0: 0 to 10 Vdc
The input level is 0 to 10 Vdc. The minimum input level is limited to 0%, so that a negative input signal due to gain and bias
settings will be read as 0%.
Setting 1: -10 to 10 Vdc
The input level is -10 to 10 Vdc. If the resulting voltage is negative after being adjusted by gain and bias settings, then the
motor will rotate in reverse.
n H3-02: Terminal A1 Function Selection
Selects the input signal level for analog input A3.
No.
H3-02
n H3-03, H3-04: Terminal A1 Gain and Bias Settings
Parameter H3-03 sets the level of the selected input value that is equal to 10 Vdc input at terminal A1 (gain).
Parameter H3-04 sets the level of the selected input value that is equal to 0 V input at terminal A1 (bias).
Use both parameters to adjust the characteristics of the analog input signal to terminal A1.
No.
H3-03
H3-04
Setting Examples
• Gain H3-03 = 200%, bias H3-04 = 0, terminal A1 as frequency reference input (H3-02 = 0):
A 10 Vdc input is equivalent to a 200% frequency reference and 5 Vdc is equivalent to a 100% frequency reference. Since
the drive output is limited by the maximum frequency parameter (E1-04), the frequency reference will be equal to E1-04
above 5 Vdc.
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Output Frequency
or Motor Speed
ON
OFF
Figure 4.25 User Set Speed Agree 1 Time Chart
Name
Terminal A1 Signal Level Selection
Name
Terminal A1 Function Selection
Name
Terminal A1 Gain Setting
Terminal A1 Bias Setting
4.6 Basic Drive Setup Adjustments
Description
L4-01
Output
frequency
+/- L4-02
Frequency
reference
OFF ON
L4-01
+/- L4-02
Setting Range
0 to 1
Setting Range
0 to 31
Setting Range
-999.9 to 999.9%
-999.9 to 999.9%
Default
0
Default
0
Default
100.0%
4
0.0%
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