YASKAWA V1000 Technical Manual page 199

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 A1 is 80% and a gain of 50% is applied from analog input
A2, the resulting frequency reference will be 40% of the maximum output frequency.
Setting 2: Auxiliary Reference
Sets the auxiliary frequency reference when Multi-Step Speed operation is selected.
Selection on page 154 for details.
Setting 4: Voltage Bias
Voltage bias boosts the output voltage of the V/f curve as a percentage of the maximum output voltage (E1-05). Available
only when using V/f Control.
Setting 7: Overtorque/Undertorque Level
Overtorque level sets the overtorque/undertorque detection level using the analog input. This works with Torque Detection
Selection 1 (L6-01) and will take the place of the torque detection level set to L6-02. For general Open Loop Vector
Control, this function is based on 100% of the motor rated torque. For V/f Control and PM Open Loop Vector, this function
is based on 100% of the drive rated current.
Setting B: PID Feedback
An input set for this function supplies the PID feedback value. This setting requires PID operation to be enabled in b5-01.
Refer to PID Feedback Input Methods on page
Setting C: PID Setpoint
An input set for this function supplies the PID setpoint value. The frequency reference selected in parameter b1-01 no
longer becomes the PID se point. This setting requires PID operation to be enabled in b5-01.
Methods on page 131.
Setting E: Motor Temperature
In addition to or in place of the oL1 (motor overload) fault detection, it is possible to use a PTC (Positive Temperature
Coefficient) thermistor for motor insulation protection.
Coefficient (PTC) on page 205
Setting F: Not Used
Any analog input that is not used should be set to F. When set to "F", an input does not affect any drive function but the
input level can be read out by a PLC via a communication option or MEMOBUS/Modbus communications (through mode).
This way drive analog inputs can be used to read out external sensor values if there is a lack of PLC analog inputs.
Setting 10/11/12/15: Positive/Negative/Regenerative/General Torque Limit (OLV only)
These functions make it possible to limit the torque reference with an analog input. The limit can either be set as a general
value for all operation conditions (setting 15) or can be programmed separately for each operation condition (quadrants
1, 2, 3, and 4). Figure 5.73
as the limit. The value is set as a percentage of the motor rated torque.
information how torque limits work.
REV motor rotation
Setting 16: Differential PID Feedback
If an analog value is set for this function, the PID controller is set for differential feedback. The subtraction of the PID
feedback input value and the differential feedback input value builds the feedback value that is used to calculate the PID
input. Refer to PID Feedback Input Methods on page
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Refer to L6: Torque Detection on page 221
131.
for detailed explanations.
shows which limit is applied in each quadrant. The lowest of the values will always be used
positive torque reference
REV run regenerative
10: Positive Torque Limit
12: Regenerative Torque Limit
15: Torque Limit
Parameter L7-04
quadrant 2
quadrant 3
11: Negative Torque Limit
15: Torque Limit
Parameter L7-03
REV run motoring
negative torque reference
Figure 5.73 Analog Input Torque Limits
Refer to Motor Protection Using a Positive Temperature
Refer to L7: Torque Limit on page 223
FWD run motoring
10: Positive Torque Limit
15: Torque Limit
Parameter L7-01
quadrant 1
quadrant 4
11: Negative Torque Limit
12: Regenerative Torque Limit
15: Torque Limit
Parameter L7-02
FWD run regenerative
131.
5.7 H: Terminal Functions
Refer to Multi-Step Speed
for details on torque detection.
Refer to PID Setpoint Input
FWD motor rotation
for
5
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