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Parameters a - 30, Motor overload, Power loss ridethru – Yaskawa F7 Drive User Manual User Manual

Page 195: Table a.1 f7 parameter list (continued)

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Parameters A - 30

H6-04

Pulse Train Input Bias
Pulse Input Bias

Sets the output level when the pulse train input is 0Hz as a
percentage of maximum output frequency E1-04.

-100.0 to

100.0

0.0%

A

A

A

A

H6-05

Pulse Train Input Filter Time
Pulse In Filter

Sets the pulse train input filter time constant in seconds.

0.00 to

2.00

0.10sec

A

A

A

A

H6-06

Terminal MP Pulse Train
Monitor Selection
Pulse Moni Sel

Select the pulse train monitor output terminal MP function (value of
the

part of U1-

). See Table A2 for the list of U1

monitors.

1, 2, 5,
20, 24,

31, 36

2

A

A

A

A

H6-07

Pulse Train Monitor
Scaling
Pulse Moni Scale

Sets the number of output pulses when the monitor is 100% (in Hz).
Set H6-06 to 2, and H6-07 to 0, to make the pulse train
monitor output synchronous to the output frequency.

0 to

32000

1440Hz

A

A

A

A

Motor Overload

L1-01

Motor Overload
Protection Selection
MOL Fault Select

Sets the motor thermal overload protection (OL1) based on the

cooling capacity of the motor.

0: Disabled
1: Standard Fan Cooled (< 10:1 motor)
2: Standard Blower Cooled (

≥ 10:1 motor)

3: Vector Motor (

≤ 1000:1 motor)

0 to 3

1

Q

Q

Q

Q

L1-02

Motor Overload
Protection Time
MOL Time Const

Sets the motor thermal overload protection (OL1) time. A larger
L1-02 time will increase the time before an OL1 fault will occur.

0.1 to

20.0

8.0min

A

A

A

A

L1-03

Motor Overheat Alarm
Operation Selection
Mtr OH Alarm Sel

Sets 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

0 to 3

3

A

A

A

A

L1-04

Motor Overheat Fault
Operation Selection
Mtr OH Fault Sel

Sets stopping method when the motor temperature analog input
(H3-09 = E) exceeds the OH4 fault level (2.34V).
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop

0 to 2

1

A

A

A

A

L1-05

Motor Temperature Input
Filter Time
Mtr Temp Filter

This parameter adjusts the filter on the motor temperature analog
input (H3-09 = E). Increase to add stability, decrease to improve
response.

0.00 to

10.00

0.20sec

A

A

A

A

Power Loss Ridethru

L2-01

Momentary Power Loss
Detection Selection
PwrL Selection

Enables and disables the momentary power loss function.
0: Disabled - Drive trips on (UV1) fault when power is lost.
1: Power Loss Ride Thru Time - 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

control power supply shut down.*

* In order for a restart to occur, the run command must be

maintained throughout the ride thru period.

0 to 2

0

A

A

A

A

L2-02

Momentary Power Loss Ride-
thru Time
PwrL Ridethru t

Sets the power loss ride-thru time. This value is dependent on the
capacity of the Drive. Only effective when L2-01 = 1.

0.0 to

25.5sec

Varies

by

kVA

A

A

A

A

L2-03

Momentary Power Loss
Minimum Base Block Time
PwrL Baseblock t

Sets the minimum time to wait to allow the residual motor voltage
to decay before the Drive output turns back on during power loss
ride thru. After a power loss, if L2-03 is greater than L2-02,
operation resumes after the time set in L2-03.

0.1 to

5.0sec

Varies

by

kVA

A

A

A

A

L2-04

Momentary Power Loss
Voltage Recovery Ramp Time
PwrL V/F Ramp t

Sets the time it takes the output voltage to return to the preset V/F
pattern after speed search (current detection mode) is complete.

0.0 to

5.0sec

Varies

by

kVA

A

A

A

A

L2-05

Undervoltage Detection
Level
PUV Det Level

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. Consult the factory before changing
this parameter setting.

150 to

210

300 to

420

190 Vdc

(230V)

380 Vdc

(480V)

A

A

A

A

L2-06

KEB Deceleration Rate
KEB Decel Time

Sets the time required to decelerate to zero speed when a KEB com-
mand is input from a multi-function input.

0.0 to
200.0

0.0sec

A

A

A

A

L2-07

Momentary Recovery Time
UV Return Time

Set the time (in seconds) to accelerate to the set speed after
recovery from a momentary power loss. If setting = 0.0, then active
acceleration time is used instead.

0.0 to

25.5

0.0sec

A

A

A

A

Denotes that parameter can be changed when the Drive is running.

Table A.1 F7 Parameter List (Continued)

Parameter

No.

Parameter Name

Digital Operator Display

Description

Setting

Range

Factory

Setting

Control Method

V/F

V/F

w/PG

Open

Loop

Vector

Flux

Vector