212
YASKAWA
TOEPYAIH6B01A HV600 AC Drive Narrow Bypass Installation & Startup
7.9
L: Protection Functions
◆
L1: Motor Protection
No.
(Hex.)
Name
Description
Default
(Range)
L1-01
(0480)
Motor Overload (oL1)
Protection
Sets the motor overload protection with electronic thermal protectors.
0 : Disabled
1 : Variable Torque
Note:
When you connect only one motor to a drive, set
L1-01 = 1 [Variable Torque]
. External thermal
relays are not necessary in these conditions.
1
(0, 1)
L1-02
(0481)
Motor Overload Protection
Time
Sets the operation time for the electronic thermal protector of the drive to prevent damage to the
motor. Usually it is not necessary to change this setting.
1.0 min
(0.1 - 5.0 min)
L1-03
(0482)
Motor Thermistor oH Alarm
Select
Sets drive operation when the PTC input signal entered into the drive is at the
oH3 [Motor Overheat
Alarm]
detection level.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop (Use C1-09)
3 : Alarm Only
3
(0 - 3)
L1-04
(0483)
Motor Thermistor oH Fault
Select
Sets the drive operation when the PTC input signal to the drive is at the
oH4 [Motor Overheat Fault
(PTC Input)]
detection level.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop (Use C1-09)
1
(0 - 2)
L1-05
(0484)
Motor Thermistor Filter
Time
Sets the primary delay time constant for the PTC input signal entered to the drive. This parameter
prevents accidental motor overheat faults.
0.20 s
(0.00 - 10.00 s)
L1-08
(1103)
oL1 Current Level
Sets the reference current for the motor 1 thermal overload detection. When the current level > 0.0 A,
you cannot set this value < 10% of drive rated current.
0.0 A
(0.0 A or 10% to 150% of
the drive rated current)
L1-13
(046D)
Motor Overload Memory
Selection
Sets the function that keeps the current electronic thermal protector value after power loss.
0 : Disabled
1 : Enabled
2 : Enabled, using RTC
2
(0 - 2)
◆
L2: Power Loss Ride Through
No.
(Hex.)
Name
Description
Default
(Range)
L2-01
(0485)
Power Loss Ride Through
Select
Sets the drive operation after a momentary power loss.
0 : Disabled
1 : Enabled for L2-02 Time
2 : Enabled while CPU Power Active
2
(0 - 2)
L2-02
(0486)
Power Loss Ride Through
Time
Sets the maximum time that the drive will wait until it tries to restart after power loss.
Determined by o2-04
(0.0 - 25.5 s)
L2-03
(0487)
Minimum Baseblock Time
Sets the minimum time to continue the drive output block (baseblock) after a baseblock.
Determined by o2-04
(0.1 - 5.0 s)
L2-04
(0488)
Powerloss V/f Recovery
Ramp Time
Sets the time for the drive output voltage to go back to the correct voltage after it completes speed
searches.
Determined by o2-04
(0.0 - 5.0 s)
L2-05
(0489)
Undervoltage Detection Lvl
(Uv1)
Sets the voltage at which the drive triggers a
Uv1 [DC Bus Undervoltage]
fault. Usually it is not
necessary to change this setting.
Determined by o2-04 and
E1-01
(208/240 V: 150 - 220 V,
480 V: 300 - 440 V)
