Motor current / torque
L6-02
10 % hysteresis
Torque detection 1 (NO)
or
Torque detection 2 (NO)
L6-03
ON
L6-03
10 % hysteresis
ON
Figure 5.48 Overtorque Detection Operation
Motor current / torque
L6-02
10 % hysteresis
Torque detection 1 (NO)
or
Torque detection 2 (NO)
L6-03
ON
L6-03
ON
Figure 5.49 Undertorque Detection Operation
Note:
1.
The torque detection function uses a hysteresis of 10% of the drive rated output current and motor rated torque.
2.
The level is set as a percentage of the drive rated output current.
n
L6-01: Torque Detection Selection 1
The torque detection function is triggered when the current or torque exceed the levels set to L6-02 for longer than the time
set to L6-03. L6-01 selects the conditions for detection and the operation that follows.
Note:
Parameter is available in bypass controller software versions VST800298 and later.
No.
Name
Setting Range
Default
L6-01
Torque Detection Selection 1
0 to 8
0
Setting 0: Disabled
Setting 1: oL3 at Speed Agree (Alarm)
Overtorque detection is active only when the output speed is equal to the frequency reference (i.e., no detection during
acceleration and deceleration). The operation continues after detecting overtorque and triggering an oL3 alarm.
Setting 2: oL3 at Run (Alarm)
Overtorque detection works as long as the Run command is active. The operation continues after detecting overtorque and
triggering an oL3 alarm.
Setting 3: oL3 at Speed Agree (Fault)
Overtorque detection is active only when the output speed is equal to the frequency reference (i.e., no detection during
acceleration and deceleration). The operation stops and triggers an oL3 fault.
Setting 4: oL3 at Run (Fault)
Overtorque detection works as long as a Run command is active. The operation stops and triggers an oL3 fault.
Setting 5: UL3 at Speed Agree (Alarm)
Undertorque detection is active only when the output speed is equal to the frequency reference (i.e., no detection during
acceleration and deceleration). The operation continues after detecting overtorque and triggering a UL3 alarm.
Setting 6: UL3 at Run (Alarm)
Undertorque detection works as long as the Run command is active. The operation continues after detecting overtorque and
triggering a UL3 alarm.
5.9 L: Protection Functions
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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5
Programming
