Yaskawa P7B Drive Bypass - Manual (Page 240)

Parameters A - 22
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 95°C 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 5.0% 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 Quick Setting
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 current limit “A”
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
Table 1: Parameter List (Continued )
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location