YASKAWA E7U Programming Manual page 159

Parameter
Parameter Name
No.
Digital Operator Display
Motor Overload Protection
L1-01 Selection
MOL Fault Select
Motor Overload Protection
L1-02 Time
MOL Time Const
Motor Overheat Alarm Operation
L1-03 Selection
Mtr OH Alarm Sel
Motor Overheat Fault Operation
L1-04 Selection
Mtr OH Fault Sel
Motor Temperature Input Filter
L1-05 Time
Mtr Temp Filter
Momentary Power Loss Detection
L2-01 Selection
PwrL Selection
Momentary Power Loss Ride-thru
L2-02 Time
PwrL Ridethru t
Momentary Power Loss Mini-
L2-03 mum Base Block Time
PwrL Baseblock t
Momentary Power Loss Voltage
L2-04 Recovery Ramp Time
PwrL V/F Ramp t
Undervoltage Detection
L2-05 Level
PUV Det Level
Table A.1
Parameter List (Continued
Description
Motor Overload
Enables or disables the motor thermal overload
protection.
0: Disabled
1: Std Fan Cooled (Enabled)
2: Std Blower Cooled
3: Vector Motor
Determines how much time will elapse prior to a motor
overload fault (OL1), when motor amps exceed the
value set in parameter E2-01 by 10%. Actual (OL1) trip
time will vary depending on severity of overload.
Operation selection when the motor temperature analog
input (H3-09=E) exceeds the OH3 alarm level (1.17V)
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
Stopping method when the motor temperature analog
input (H3-09=E) exceeds the OH4 level (2.34V).
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
Delay Time applied to motor temperature analog input
(H3-09=E) for filtering purposes.
PwrLoss Ridethru
Enables and disables the momentary power loss
function.
0: Disabled - Drive trips on (UV1) fault when power is
lost.
1: PwrL Ride Thru t - Drive will restart if power returns
within the time set in L2-02.*
2: CPU Power Active - Drive will restart if power
returns prior to internal power supply shut down.*
* In order for a restart to occur, the run command must
be maintained throughout the ride thru period.
Determines the power loss ride-thru time. This value is
dependent on the capacity of the Drive. Only effective
when L2-01 = 1.
Used to allow the residual motor voltage to decay
before the Drive output turns back on. After a power
loss, if L2-03 is greater than L2-02, operation resumes
after the time set in L2-03.
The time it takes the output voltage to return to the
preset V/f pattern after speed search (current detection
mode) is complete.
Sets the Drive's DC Bus undervoltage trip level. If this
is set lower than the factory setting, additional AC input
reactance or DC bus reactance may be necessary.
Parameters A - 19
)
Setting Factory
Range Setting
0 to 1 1
0.1 to 20.0 8.0min
0 to 3 3
0 to 2 1
0.00 to
0.20sec
10.00
0 to 2 2
0.0 to kVA
25.5sec Dependent
kVA
0.1 to 5.0sec
Dependent
kVA
0.0 to 5.0sec
Dependent
Voltage Voltage
Class Class
Dependent Dependent
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