Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 93)

H3-01 = 0
10 V 5 V 0 V
Gain = 200 %
100 %
Frequency
reference
Bias = 0 %
E1-04
Figure 1.50 Frequency Reference Setting by Analog Input with Increased Gain
• Gain H3-03 = 100%, bias H3-04 = -25%, terminal A1 as frequency reference input:
An input of 0 Vdc will be equivalent to a -25% frequency reference.
When parameter H3-01 = 0, the frequency reference is 0% between 0 and 2 Vdc input.
0
2.0 V 10 V
100 %
Frequency
reference
-25%
H3-01 = 0
H3-01 = 1
H3-01 = 0
Analog Input
Voltage
Figure 1.51 Frequency Reference Setting by Analog Input with Negative Bias
n H3-09: Terminal A2 Signal Level Selection
Selects the input signal level for analog input A2. Set Jumper S1 on the terminal board accordingly for a voltage input or
current input.
No. Name Setting Range Default
H3-09 Terminal A2 Signal Level Selection 0 to 3 2
Setting 0: 0 to 10 V with Zero Limit
The input level is 0 to 10 Vdc. Negative input values will be limited to 0. Refer to Setting 0: 0 to 10 V with Zero Limit on
page 92 .
Setting 1: 0 to 10 V without Zero Limit
The input level is 0 to 10 Vdc. Negative input values will be accepted. Refer to Setting 1: 0 to 10 V without Zero Limit on
page 92 .
Setting 2: 4 to 20 mA Current Input
The input level is 4 to 20 mA. Negative input values by negative bias or gain settings will be limited to 0%.
Setting 3: 0 to 20 mA Current Input
The input level is 0 to 20 mA. Negative input values by negative bias or gain settings will be limited to 0%.
n H3-10: Terminal A2 Function Selection
Determines the function assigned to analog input terminal A2. Refer to Multi-Function Analog Input Terminal Settings on
page 94 for a list of functions and descriptions.
No. Name Setting Range Default
H3-10 Terminal A2 Function Selection 0 to 26 0
1.7 H: Terminal Functions
YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual 93
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Parameter Details