YASKAWA GA700 Technical Manual page 872

11.9 L: Protection Function
1 : Enabled
■
L8-55: InternalBrakingTransistorProtect
No.
Name
(Hex.)
L8-55 InternalBrakingTran
sistorProtect
(045F)
0 : Disable
Disables braking transistor protection.
Use this setting in the following situation. Enabling the braking transistor in the following situations may cause an
rF [Braking Resistor Fault].
• When using a regenerative converter, such as the D1000.
• When using a regenerative unit, such as the R1000.
• When connecting braking resistor options to the drive, such as CDBR units.
• When using no internal braking transistor.
1 : Protection enabled
Protects internal braking transistor when using a braking transistor or optional braking resistors.
The following models have a built-in braking transistor .
• 2004 to 2138
• 4002 to 4168
■
L8-56: Stl Act Time
No.
Name
(Hex.)
L8-56 Stl Act Time
(047D)
Note:
If the set time for L8-56 is too low, STPo misdetections may occur. If the set time for L8-56 is too high, STPo detection may stop
functioning.
■
L8-57: Stl Retry Count
No.
Name
(Hex.)
L8-57 Stl Retry Count
(047E)
Note:
If the number of operations for L8-57 is too low, STPo misdetections may occur. If the number of operations for L8-57 is too high, STPo
detection may stop functioning.
■
L8-90: STPo Detection Level
No.
Name
(Hex.)
L8-90 STPo Detection
Level
(0175)
This function detects the desynchronization state of PM motors.
Desynchronization due to motor locks cannot be detected when the frequency reference is low during startup
while the motor is locked. If fault detection is necessary in environments with potential for startups in these
conditions, set the control fault detection level to enable detection of desynchronization due to motor locking.
Increase the setting in increments of 5.
872
V/f CL-V/f OLV CLV AOLV
Enables or disables protection for the internal braking transistor.
V/f CL-V/f OLV CLV AOLV
Sets the time that the acceleration stall prevention function can continue to
operate, after which the STPo [Desynchronization Error] is detected.
V/f CL-V/f OLV CLV AOLV
Sets the number of times the acceleration stall prevention function can
operate until speeds match, after which the STPo "Desynchronization Error"
is detected.
V/f CL-V/f OLV CLV AOLV
STPo [Desynchronization Error] is detected when the control fault reaches
the detection level of L8-90.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
1
(0, 1)
Default Setting
(Range)
5000 ms
(100 - 5000 ms)
Default Setting
(Range)
10 times
(1 to 10 times)
Default Setting
(Range)
Determined by A1-02
(0 to 5000 times)