5.7 H: Terminal Functions
204 YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
n Multi-Function Analog Input Terminal Settings
See Table 5.23 for information on how H3-02, H3-10, and H3-06 determine functions for terminals A1, A2, and A3.
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 5.23 Multi-Function Analog Input Terminal Settings
Setting 0: Frequency bias
The input value of an analog input set to this function will be added to the analog frequency reference value. When the
frequency reference is supplied by a different source other than the analog inputs, this function will have no effect. Use
this setting also when only one of the analog inputs is used to supply the frequency reference.
By default, analog inputs A1 and A2 are set for this function. Using A1 and A2 at the same time increases the frequency
reference by the total of all inputs.
Example: If the analog frequency reference from analog input terminal A1 is 50% and a bias of 20% is applied by analog
input terminal A2, the resulting frequency reference will be 70% of the maximum output frequency.
Setting 1: Frequency gain
The input value of an analog input set to this function will be multiplied with the analog frequency reference value.
Example: If the analog frequency reference from analog input terminal A1 is 80% and a gain of 50% is applied from
analog input terminal A2, the resulting frequency reference will be 40% of the maximum output frequency.
Setting 2: Auxiliary reference 1
Sets the auxiliary frequency reference 1 when multi-step speed operation is selected. Refer to Multi-Step Speed
Selection on page 155 for details.
Setting 3: Auxiliary reference 2
Sets the auxiliary frequency reference 2 when multi-step speed operation is selected. Refer to Multi-Step Speed
Selection on page 155 for details.
Setting 4: Output voltage bias
Voltage bias boosts the output voltage of the V/f curve as a percentage of the maximum output voltage set to E1-05 (200
V for 200 V class drives, 400 V for the 400 V class). Available only when using V/f Control.
Setting 5: Accel/decel time gain
Adjusts the gain level for the acceleration and deceleration times set to parameters C1-01 through C1-08.
The acceleration time used by the drive is calculated by multiplying the this gain level to C1- as follows:
C1- ×
Accel/decel time gain = Drive accel/decel time
Figure 5.69
Figure 5.69 Accel/Decel Time Gain with Analog Input Terminal
Setting Function Page Setting Function Page
0 Frequency bias 204 D Frequency bias 205
1 Frequency gain 204 E Motor temperature (PTC input) 205
2 Auxiliary frequency reference 1 204 F Through mode 206
3 Auxiliary frequency reference 2 204 10 Forward torque limit
206
4 Output voltage bias 204 11 Reverse Torque Limit
5 Accel/decel time gain 204 12 Regenerative torque limit
6 DC Injection Braking current 205 13 Torque limit using torque reference/speed limit 206
7 Torque detection level 205 14 Torque compensation 206
8 Stall Prevention level during run 205 15 General torque limit 206
9 Output frequency lower limit level 205 16 Differential PID feedback 206
B PID feedback 205 1F Through mode 206
C PID setpoint 205 41 Output voltage gain 206
100%
50%
0 5 V 10 V
1V 2V
20%
10%
Acceleration/deceleration gain from 1 to 10 V
(10 V)
Input Voltage (V)
×
10 (%)
=
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