2.9 L: Protection Functions
386 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
• When you set H2-xx [MFDO Function Select] to these functions:
Setting Value Function
2 Speed Agree 1
3 User-Set Speed Agree 1
4 Frequency Detection 1
5 Frequency Detection 2
Setting Value Function
13 Speed Agree 2
14 User-Set Speed Agree 2
15 Frequency Detection 3
16 Frequency Detection 4
• When you use these functions for MEMOBUS monitor data:
Register No. Description
002CH
Drive Status 2
bit2
Speed agreement
1: During agreement
bit3
User-defined speed agreement
1: During agreement
bit4
Frequency Detection 1
1: Output frequency ≤ L4-01
bit5
Frequency Detection 2
1: Output frequency ≥ L4-01
004BH
U1-12 [Drive Status]
bit4 1: During speed agreement
• When you use these functions for monitor parameters:
No.
(Hex.)
Name Description
U1-12
(004B)
Drive Status bit 4: During speed agreement
◆ L5: Fault Restart
The Auto Restart function tries to keep machines operating when the drive detects a transient fault.
The drive can do a self-diagnostic check and continue the operation after a fault. If the cause of the fault goes away,
the drive does speed search and restarts. It will not stop and the drive will not record a fault history. Use L5-02 [Fault
Contact at Restart Select] to select the operation of fault relay signals during Auto Restart operation.
Sets if the drive will do Auto Restart and the number of times the drive will try to do Auto Restart in a set time. If the
number of Auto Restart tries is more than the set value during the set time, drive output shuts off and operation stops.
If this happens, remove the cause of the fault and manually restart the drive.
The drive can do Auto Restart when these faults occur:
Note:
You can disable Auto Restart for some faults if you must not restart the machine after the fault with parameters L5-07 and L5-08.
Table 2.61 List of Faults during which Auto Restart is Available
Fault Name
Parameters to Disable
Auto Restart
GF Ground Fault L5-08
LF Output Phase Loss -
oC Overcurrent -
oH1 Heatsink Overheat L5-08
oL1 Motor Overload L5-07
oL2 Drive Overload L5-07
oL3 Overtorque Detection 1 L5-07
Fault Name
Parameters to Disable
Auto Restart
oL4 Overtorque Detection 2 L5-07
ov Overvoltage L5-08
PF Input Phase Loss -
rH Braking Resistor Overheat -
rr Dynamic Braking Transistor
Fault
-
STPo Motor Step-Out Detected -
Uv1 DC Bus Undervoltage
*1
L5-08
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