YASKAWA GA700 Technical Manual page 865

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L8-01: Internal DB Resistor Protect Sel
No.
Name
(Hex.)
L8-01 Internal DB Resistor
Protect Sel
(04AD)
0 : Not Provided
Disables braking resistor protection. Use this setting for any dynamic braking option other than the Yaskawa ERF-
type resistor.
1 : Provided
Enables protection for Yaskawa ERF-type resistors.
Note:
Set L8-01 = 1 and H2-01 to H2-04 = D [MFDO Function Select = Braking Resistor Fault]. Use a sequence that shuts the power OFF
by using MFDO.
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L8-02: Overheat Alarm Level
No.
Name
(Hex.)
L8-02 Overheat Alarm
Level
(04AE)
The alarm is output when the heatsink temperature exceeds the temperature set in L8-02. To enable this function,
set one of H2-01 to H2-04 [MFDO Function Select] to 20 [Drive Overheat Pre-Alarm (oH)].
If the temperature reaches the overheat fault level, the drive will trigger an oH1 [Heatsink Overheat] fault and
stop operation.
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L8-03: Overheat Pre-Alarm Ope Selection
No.
Name
(Hex.)
L8-03 Overheat Pre-Alarm
Ope Selection
(04AF)
0 : Ramp to Stop
The drive ramps the motor to stop according to the deceleration time. The terminal turns on when H2-xx = E
[MFDO Function Select = Fault] is set.
1 : Coast to Stop
The drive shuts off output and the motor coasts to stop. The terminal turns on when H2-xx = E.
2 : Fast-Stop
The drive stops the motor using the deceleration time set with C1-09 [Fast Stop Time]. The terminal turns on
when H2-xx = E.
3 : Alarm Only
oH appears on the keypad, and operation continues.
4 : Run@L8-19 Rate
The drive performs deceleration to the level set in L8-19 [Freq Reduct Rate During OH Pre-Alarm] and continues
operation. oH flashes on the keypad.
The drive performs deceleration again if the overheat alarm is still on after 10 seconds have elapsed. The drive
continues to perform deceleration every 10 seconds while the alarm continues to be output. If the overheat alarm
is still output after the drive performs deceleration 10 times, the output terminal set by oH Pre-Alarm Time Limit
[H2-01 to H2-04 = 4D] turns on. When the overheat alarm stops being output during deceleration, the drive
performs acceleration until the frequency reference valid prior to this overheat alarm output being turned off is
reached. The following diagram illustrates the output of the overheat alarm and the drive operation at a
diminished output frequency.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Enabled braking resistor protection of the when using an optional heatsink
mounted braking resistor (ERF type, 3% ED).
V/f CL-V/f OLV CLV AOLV
Sets the oH detection level in temperature.
V/f CL-V/f OLV CLV AOLV
Sets the operation of drives when an oH alarm is detected.
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
11.9 L: Protection Function
Default
(Range)
0
(0, 1)
Default
(Range)
Determined by o2-04
and C6-01
(50 - 150 °C)
Default
(Range)
3
(0 - 4)
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