YASKAWA T1000V, Техническое руководство

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5.7 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 181
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Setting 0: Frequency Bias
The input value of an analog input set to this function will be added to the analog frequency reference value. Use this
setting also when only one analog input is used to supply the frequency reference.
By default both analog inputs A1 and A2 are set for this function. Using both A1 and A2 at the same time increases the
frequency reference by the total of both inputs.
Example: If the analog frequency reference by analog input A1 is 50% and a bias of 20% is applied by analog input 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 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. Refer to Multi-Step Speed Selection
on page 144 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.
Refer to L6: Torque Detection on page 197 for details on torque
detection.
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 122 .
Setting C: PID Set Point
An input set for this function supplies the PID set point value. The frequency reference selected in parameter b1-01 no
longer becomes the PID set point. This setting requires PID operation to be enabled in b5-01.
Refer to PID Setpoint
Input Methods on page 122 .
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.
Refer to Motor Protection Using a Positive Temperature
Coefficient (PTC) on page 187 for detailed explanations.
Setting F/1F: Not Used/Through Mode
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 5.62 shows which limit is applied in each quadrant. The lowest of the values will
always be used as the limit. The value is set as a percentage of the motor rated torque. Refer to L7: Torque Limit on
page 199 for information how torque limits work.