Yaskawa Matrix Converter - Manual (Page 149)

Parameter Tables
5-
49
„ L8: Hardware Protection
* The default depends upon the MxC capacity. The value for a 200 V class MxC of 5.5 kW is given.
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control
Methods MEMO-
BUS
Register
Page
Display V/f
Open
Loop
Vector
Flux
Vector
L8-02
Overheat Alarm
Level
When the cooling fin temperature
exceeds the value set in this parameter, an
Overheat Alarm (OH) will occur.
50 to
130
90 °C
*
No A A A 4AEH 6-66
OH Pre-Alarm
Lvl
L8-03
Overheat Pre-
Alarm Operation
Selection Selects the MxC operation upon an OH
pre-alarm detection.
0: Decelerate to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
0 to 3 3 No A A A 4AFH 6-66
OH Pre-Alarm
Sel
L8-07
Output Phase
Loss Protection Selects the detection method for output
phase loss.
When applied motor capacity is too small
for MxC capacity, output phase loss may
be detected inadvertently. In this case, set
to 0.
0: Disabled.
1: Single Phase Loss Detection
2: 2/3-phase Loss Detection
0 to 2 0 No A A A 4B3H -
Ph Loss Out Sel
L8-09
Output Ground
Fault Detection
Selection
Enables and disables the MxC's output
ground fault detection.
0: Disabled.
1: Enabled.
0 or 1 1 No A A A 4B5H -
Ground Fault Sel
L8-10
Heatsink Cooling
Fan Operation
Selection Controls the heatsink cooling fan opera-
tion.
0: Fan On-Run Mode - Fan will operate
only when the MxC is running and for
L8-11 seconds after RUN is removed.
1: Fan always on - Cooling fan operates
whenever the MxC is powered up.
0 or 1 0 No A A A 4B6H -
Fan On/Off Sel
L8-11
Heatsink Cooling
Fan Operation
Delay Time
This parameter sets the delay time for the
cooling fan turn off after the Run Com-
mand is removed when L8-10 = 0.
0 to 300 60 s No A A A 4B7H -
Fan Delay Time
L8-12
Ambient Temper-
ature Setting When the MxC is installed in an ambient
temperature exceeding its rating, the
MxC overload (OL2) protection level is
adjusted.
45 to 60 45 °C No A A A 4B8H -
Ambient Temp
L8-15
OL2 Characteris-
tic Selection at
Low Speeds This parameter assists in protecting the
output transistors from overheating when
output current is high and output fre-
quency is low (6 Hz and less).
0: Disabled. - L8-16 and L8-17 are dis-
abled.
1: Enabled. - L8-16 and L8-17 are
active.
0 or 1 1 No A A A 4BBH -
OL2 Sel @ L-Spd
L8-42
Factory adjust-
ment 1 For factory adjustment
Do not change the setting.
0: Not adjusted
1: Being adjusted
2: Adjusted
0 to 2 2 No A A A 4F3H 8-3
Voltage Offset