5.7 H: Terminal Functions
YASKAWA ELECTRIC
SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
205
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Setting 6: DC Injection Braking current
The current level used for DC Injection Braking. Set as a percentage of the maximum output current using.
Figure 5.70
Figure 5.70 DC Injection Braking Current Using an Analog Input Terminal
Setting 7: Torque Detection level
Using this setting, the overtorque/undertorque detection level for torque detection 1 (L6-01) can be set by an analog
input. The analog input will replace the level set to L6-02. An analog input of 100% (10 V or 20 mA) will set a torque
detection level equal to 100% drive rated current / motor rated torque. Adjust the analog input gain if higher detection
level settings are required.
Refer to L6: Torque Detection on page 226
for details on torque detection.
Setting 8: Stall Prevention level
This setting allows an analog input signal to adjust the Stall Prevention level.
shows the setting
characteristics. The drive will use either the Stall Prevention level set to L3-06 or the level coming from the analog input
terminal that has been selected, whichever value is lower.
Figure 5.71
Figure 5.71 Stall Prevention During Run Using an Analog Input Terminal
Setting 9: Output frequency lower limit level
The user can adjust the lower limit of the output frequency using an analog input signal.
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 128
.
Setting C: PID setpoint
An input set for this function supplies the PID setpoint value, and the frequency reference selected in parameter b1-01 is
no longer the PID setpoint. PID operation to be enabled in b5-01 to use this setting.
.
Setting D: Frequency bias
The input value of an analog input set to this function will be added to the frequency reference. This function can be used
with any frequency reference source.
Setting E: Motor temperature
In addition to motor overload fault detection oL1, it is possible to use a PTC (Positive Temperature Coefficient)
thermistor for motor insulation protection. Connect the PTC to analog input terminal A3, and set switch S4 on the
terminal board to PTC. Refer to
Terminal A3 Analog/PTC Input Selection on page 67
for details on setting S4. Refer to
Motor Protection Using a Positive Temperature Coefficient (PTC) on page 215
for further explanation.
Drive Rated
Current
0
(4)
100%
10 V
(20 mA)
DC Injection Braking Current Level
Stall Prevention Level during Run
30%
100%
Analog Input Level
30%
100%
0