YASKAWA L1000A Technical Manual page 199

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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.
H3-13
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H3-16/H3-17: Offset for Terminal A1/A2
Parameters H3-16 and H3-17 set the offset applied analog input values from terminals A1 and A2.
Although adjustment is rarely required, these parameters can be used for zero adjustment of the analog inputs.
No.
H3-16
H3-17
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Multi-Function Analog Input Terminal Settings
Refer to Table 5.13 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.
Setting
0 Speed reference bias
2 Auxiliary speed reference 1 (used as a second speed reference)
3 Auxiliary speed reference 2 (used as a third speed reference)
14 Torque compensation (load cell input)
1F Not used (through mode)
Setting 0: Speed reference bias
The input value of an analog input set to this function will be added to the analog speed reference value. When the speed
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 speed reference.
By default, analog inputs A1 and A2 are set for this function. Using A1 and A2 at the same time increases the speed
reference by the total of all inputs.
Example: If the analog speed reference from analog input terminal A1 is 50% and a bias of 20% is applied by analog
input terminal A2, the resulting speed reference will be 70% of the maximum output speed.
Setting 2: Auxiliary speed reference 1 (used as a second speed reference)
Sets the auxiliary speed reference 1 when multi-step speed operation is selected. Refer to
Inputs (b1-01 = 0) on page 115
Setting 3: Auxiliary speed reference 2 (used as a third speed reference)
Sets the auxiliary speed reference 2 when multi-step speed operation is selected. Refer to
Inputs (b1-01 = 0) on page 115
Setting 14: Torque compensation (load cell input)
This selection allows an analog signal to the input terminal adjust the amount of torque compensation to handle and
unbalance at start when elevators sensors indicate that a large load has been added to the car. This helps to minimize
shock and jerking at start. Setting 14 requires an analog signal from a load sensor. For more information on torque
compensation, refer to Adjusting the Torque Compensation at Start on page
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
Name
Analog Input Filter Time Constant
Name
Offset for Terminal A1
Offset for Terminal A2
Table 5.13 Multi-Function Analog Input Terminal Settings
for details.
for details.
Setting Range
0.00 to 2.00 s
Setting Range
Function
121.
5.7 H: Terminal Functions
Default
0.03 s
Default
–500 to 500 0
–500 to 500 0
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Speed Selection Using Digital
Speed Selection Using Digital
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