Yaskawa P7 Drive User Manual - Manual (Page 195)

Parameters A - 21
Hdwe Protection
L8-01
Internal Dynamic Braking Resis-
tor Protection Selection
DB Resistor Prot
0: Not Provided
1: Provided
0 or 1 0 Programming
L8-02
Overheat Pre-Alarm Level
OH Pre-Alarm Lvl
When the cooling fin temperature exceeds the value set
in this parameter, an overheat pre-alarm (OH) will
occur.
50 to 130
kVA
Dependent
Programming
L8-03
Overheat Pre-Alarm Operation
Selection
OH Pre-Alarm Sel
Drive Operation upon OH Pre Alarm Detection.
0: Ramp to Stop (Decel Time C1-02).
1: Coast to Stop
2: Fast-Stop (Decel Time = C1-09).
3: Alarm Only
*0 to 2 is recognized as fault detection, and 3 is
recognized as alarm. (For the fault detection, the fault
contact operates.)
4: OH Alarm & Reduce (Continue operation and reduce
output frequency by L8-19).
0 to 4 4 Programming
L8-06
Input Phase Loss Detection Level
Ph Loss In Lvl Monitors the DC Bus current ripple and activates when
one of the input phases is lost (PF).
0.0 to 25.0
kVA
Dependent
Programming
L8-09
Output Ground Fault Detection
Selection
Ground Fault Sel
Enables and disables drive output ground fault
detection.
0: Disabled
1: Enabled
0 or 1 1 Programming
L8-10
Heatsink Cooling Fan Operation
Selection
Fan On/Off Sel
Controls the Heatsink Cooling Fan Operation.
0: Fan On-Run Mode (Fan will operate only when drive
is running and for L8-11 seconds after RUN is
removed).
1: Fan Always On (Cooling fan operates whenever
drive is powered up).
0 or 1 0 Programming
L8-11
Heatsink Cooling Fan Operation
Delay Time
Fan Delay Time When L8-10=0 this parameter sets a delay time for
Cooling Fan de-energization after the run command is
removed.
0 to 300 300sec Programming
L8-12
Ambient Temperature Setting
Ambient Temp
When the drive is installed in an ambient temperature
exceeding its rating, drive overload (OL2) protection
level is reduced.
45 to 60°C 45°C Programming
L8-15
OL2 Characteristic Selection at
Low Speeds
OL2 Sel @ L-Spd
This parameter assists in protecting the output transistor
junctions from overheating when output current is high
and output frequency is low.
0: Disabled
1: Enabled (L8-18 is active)
0 or 1 1 Programming
L8-18
Soft CLA Selection
Soft CLA Sel
Enables and disables software Current Limit “A”
(CLA)
0: Disabled
1: Enabled
0 or 1 1 Programming
L8-19
OH Frequency Reference
Reduction Level
Fref During OH
Sets the amount of frequency reference reduction when
an Overheat Pre-alarm (OH) is detected.
0.0
to
100.0
20.0% Programming
L8-32
OH1 Detection Selection for Fan
Failure
OH1 Detect Sel
Selects the drive response upon failure of the internal
cooling fan.
0: Disabled
FAN alarm is displayed
1: Enabled
OH1 fault occurs
0 or 1 1 Programming
Hunting Prev
n1-01
Hunting Prevention Selection
Hunt Prev Select
0: Disabled (Hunting prevention function disabled).
1: Enabled (Hunting prevention function enabled).
If the motor vibrates while lightly loaded, hunting
prevention may reduce the vibration. There is a loss of
responsiveness if hunting prevention is enabled.
0 or 1 1 Programming
n1-02
Hunting Prevention Gain Setting
Hunt Prev Gain
Gain setting for the Hunting Prevention Function.
If the motor vibrates while lightly loaded and n1-01=1,
increase the gain by 0.1 until vibration ceases.
If the motor stalls while n1-01=1 decrease the gain by
0.1 until the stalling ceases.
0.00 to 2.50 1.00 Programming
Table 1: Parameter List (Continued )
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location