Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 94)

n H3-11, H3-12: Terminal A2 Gain and Bias Setting
Parameter H3-11 sets the level of the input value selected that is equal to 10 Vdc input or 20 mA input to terminal A2.
Parameter H3-12 sets the level of the input value selected that is equal to 0 V, 4 mA or 0 mA input at terminal A2.
Use both parameters to adjust the characteristics of the analog input signal to terminal A2. The setting works in the same way
as parameters H3-03 and H3-04 for analog input A1.
No. Name Setting Range Default
H3-11 Terminal A2 Gain Setting -999.9 to 999.9% 100.0%
H3-12 Terminal A2 Bias Setting -999.9 to 999.9% 0.0%
n H3-13: Analog Input Filter Time Constant
Parameter H3-13 sets the time constant for a first order filter that will be applied to the analog inputs.
An analog input filter prevents erratic drive control when using a “noisy” analog reference. Drive operation becomes more
stable as the programmed time becomes longer, but it also becomes less responsive to rapidly changing analog signals.
No. Name Setting Range Default
H3-13 Analog Input Filter Time Constant 0.00 to 2.00 s 0.03 s
n H3-14: Analog Input Terminal Enable Selection
When one of the multi-function digital input parameters is set for “Analog input enable” (H1-oo = C), the value set to H3-14
determines which analog input terminals are enabled and which terminals are disabled when the input is closed. All analog
input terminals will be enabled all of the time if H1-oo is not set to C.
No. Name Setting Range Default
H3-14 Analog Input Terminal Enable Selection 1 to 3 2
Setting 1: A1 Only Enabled
Setting 2: A2 Only Enabled
Setting 3: Terminals A1 and A2
n H3-16 and H3-17: Terminal A1/A2 Offset
Set the offset level of the selected input value to terminals A1 or A2 that is equal to 0 Vdc input. These parameters rarely
require adjustment.
No. Name Setting Range Default
H3-16 Terminal A1 Offset -500 to 500 0
H3-17 Terminal A2 Offset -500 to 500 0
n Multi-Function Analog Input Terminal Settings
See Table 1.30 for information on how H3-02 and H3-10 determine functions for terminals A1 and A2.
Note: The scaling of all input functions depends on the gain and bias settings for the analog inputs. Set these to appropriate values when selecting
and adjusting analog input functions.
Table 1.30 Multi-Function Analog Input Terminal Settings
Setting Function Page
0 Frequency Bias 95
1 Frequency Gain 95
2 Auxiliary Frequency Reference 1 95
3 Auxiliary Frequency Reference 2 95
4 Output Voltage Bias 95
5 Accel/Decel Time Gain 95
6 DC Injection Braking Current 95
7 Overtorque/Undertorque Detection Level 96
8 Stall Prevention Level During Run 96
Setting Function Page
9 Output Frequency Lower Limit Level 96
B PI Feedback 96
C PI Setpoint 96
D Frequency Bias 96
E Motor Temperature (PTC Input) 96
F Through Mode 96
16 Differential PI Feedback 96
25 Secondary PI Setpoint –
26 Secondary PI Feedback –
1.7 H: Terminal Functions
94 YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual