L5: Fault Restart; L6: Torque Detection - YASKAWA J1000 Technical Manual

No.
L4-01
Refer to H2-01: Terminal MA/MB/MC Function Selection on page
n L4-07: Speed Agreement Detection Selection
Determines when frequency detection is active using parameter L4-01.
No.
L4-07
Setting 0: No Detection During Baseblock
Setting 1: Detection Always Enabled
u

L5: Fault Restart

The drive can be set up to perform a self-diagnostic check and resume the operation after a fault has occurred. When the self-
check is successful and the cause of the fault has disappeared the drive will restart.
The drive can attempt to restart itself following the faults listed below.
Fault
oC
oL1
oL2
oL3
<1> When L2-01 is set to 1 or 2 (continue operation during momentary power loss)
Use parameter L5-01 to set up automatic fault restart.
To output a signal during fault restart, set H2-01 to 1E.
n L5-01: Number of Auto Restart Attempts
Sets the number of times that the drive may attempt to restart itself.
No.
L5-01
The restart counter is incremented at each restart attempt, regardless of whether the attempt was successful. When the counter
reaches the number set in L5-01 the operation stops and the fault has to be reset manually after correcting the cause.
The number of fault restarts is reset back to zero when:
• The drive operates normally for ten minutes following a fault restart.
• A fault is cleared manually after protective functions are triggered.
• The power supply is cycled.
u

L6: Torque Detection

The drive provides a torque detection function that triggers an alarm or fault signal when the load is too heavy (oL). It is set
up using the L6-oo parameters. To indicate an overload condition to an external device, the digital output should be
programmed as shown below.
H2-01 Setting
B
17
Figure 5.37 shows the function of overtorque detection.
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
Name
Speed Agreement Detection Level
Name
Speed Agreement Detection Selection
Name
(Overcurrent)
(Motor Overload)
(Drive Overload)
(Overtorque 1)
Name
Number of Auto Restarts
Torque detection 1, N.O. (output close when overload is detected)
Torque detection 1, N.C. (output opens when overload is detected)
http://nicontrols.com
Setting Range
0.0 to 400.0 Hz
103, Settings 2, 4, and 5.
Setting Range
0 or 1
Fault
PF
rH (Braking Resistor Fault)
Uv1
(DC Bus Undervoltage)
Setting Range
0 to 10
Description
5.7 L: Protection Functions
Default
0.0 Hz
Default
0
Name
(Input Phase Loss)
<1>
Default
0
5
117