Yaskawa Z1000U - Manual (Page 294)

No.
(Addr.
Hex)
Name LCD Display Description Values Page
L8-29
(04DF)
Current Unbalance
Detection (LF2)
LF2 Flt Det Sel
0: Disabled
2: Current Det Type
OLV/PM OLV/PM
0: Disabled
2: Enabled (current detection)
Default: 2
Range: 0, 2
–
L8-32
(04E2)
Main Contactor and
Cooling Fan Power
Supply Failure Selection
FAN Fault Sel
0: Ramp to stop
1: Coast to stop
2: Fast-Stop
Determines drive response when a fault occurs with the internal
cooling fan.
0: Ramp to stop
1: Coast to stop
2: Fast stop (Decelerate to stop using the deceleration time set
to C1-09)
Default: 1
Range: 0 to 2
172
L8-35
(04EC)
Installation Method
Selection
Installation Sel
0: IP00/OpenChassis
2: IP20/Nema Type 1
3: Finless/Fin Ext
0: IP00/Open-Chassis enclosure
2: IP20/NEMA Type 1 enclosure
3: Finless model drive or external heatsink installation
Default: <1> <2>
<3>
Range: 0, 2, 3
172
L8-38
(04EF)
Carrier Frequency
Reduction
Fc Reduct dur OL
0: Disabled
1: Active below 6Hz
2: Active @ any Spd
0: Disabled
1: Enabled below 6 Hz
2: Enabled for the entire speed range
Default: <4>
Range: 0 to 2
172
L8-40
(04F1)
Carrier Frequency
Reduction Off Delay
Time
Fc Reduct Time
Sets the time that the drive continues running with reduced
carrier frequency after the carrier reduction condition is gone.
Setting 0.00 s disables the carrier frequency reduction time.
Default: 0.50 s
Min.: 0.00
Max.: 2.00
173
L8-41
(04F2)
High Current Alarm
Selection
High Cur Alm Sel
0: Disabled
1: Enabled
0: Disabled
1: Enabled.
An alarm is triggered at output currents above 150% of drive
rated current.
Default: 0
Range: 0, 1
173
L8-97
(3104)
Carrier Frequency
Reduction Selection
during oH Pre-Alarm
FC Sel dur OHAlm
0: Disabled
1: Enabled
Carrier frequency reduction protection selection. It is reduced
to the carrier frequency at oH pre-alarm.
0: Disabled
1: Enabled
Default: 0
Range: 0, 1
–
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
<2> Parameter setting value is not reset to the default value when the drive is initialized.
<3> Default setting is determined by parameter o2-04, Drive Model Selection.
<4> Default setting is dependent on parameters A1-02, Control Method Selection, and o2-04, Drive Model Selection.
u L9: Drive Protection 2
No.
(Addr.
Hex)
Name LCD Display Description Values Page
L9-03
(0819)
Carrier Frequency
Reduction Level
Selection
Fc ReductLvl Sel
0: Disabled
1: Enabled
Selects the level to start the reduction of the frequency or to clear
the current frequency level for the automatic reduction of the
carrier frequency.
There is normally no need to change this parameter from the
default value.
0: Reduces the carrier frequency based on the drive rated current
that is not derated.
1: Reduces the carrier frequency based on the drive rated current
that is derated by the carrier frequency and the temperature
selected for C6-02.
Default: 0
Range: 0, 1
–
B.9 L: Protection Function
294 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual