L: Protection Function - YASKAWA T1000V Technical Manual

No. Name
H6-04
Pulse Train Input Bias
<15>
H6-05 Pulse Train Input Filter
Time
<15>
H6-06 Pulse Train Monitor
Selection
<15>
H6-07
Pulse Train Monitor Scaling
<15>
Pulse Train Input Minimum
H6-08
Frequency
<15> Parameter can be changed during run.
<25> If this parameter is set to 0, the drive will be unable to respond to MEMOBUS/Modbus commands.
<26> The availability of certain functions depends on the control method used.
<36> Default setting is determined by the initialize mode the drive is set for (o2-09).
Note: Cycle power to the drive to enable MEMOBUS/Modbus settings.

◆ L: Protection Function

L parameters provide protection to the drive and motor, such as: control during momentary power loss, Stall Prevention,
frequency detection, fault restarts, overtorque detection, torque limits and other types of hardware protection.
No. Name
Motor Overload Protection
L1-01
Selection
Motor Overload Protection
L1-02
Time
Motor Overheat Alarm
L1-03 Operation Selection (PTC
input)
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Description
Sets the level of the value selected in H6-01 when 0 Hz is
input.
Sets the pulse train input filter time constant.
Select the pulse train monitor output function (value of the
- part of U - ).
Refer to U: Operation Status Monitors on page 358
the list of U monitors.
Example: To select U5-01, set "501. "When not using this
parameter or when using in the through mode, set "000".
Sets the terminal MP output signal frequency when the
monitor value is 100%. Set H6-06 to "102" and H6-07 to
"0", to make the pulse train monitor output equal to the
output frequency.
Sets the minimum frequency for the pulse train input to be
detected. Enabled when H6-01 = 0, 1, or 2.
Description
L1: Motor Protection
Use L1 parameters to configure motor protective functions.
Sets the motor thermal overload protection (oL1) based on
the cooling capacity of the motor.
0: Disabled
1: Standard Fan Cooled (speed range < 10:1)
2: Standard Blower Cooled (speed range ≥ 10:1)
3: Vector Motor (speed range 100:1)
4: PM motor with variable torque
NOTICE: When using a single drive to operate multiple
motors, set L1-01 to 0 and ensure each motor has a thermal
relay installed.
Sets the motor thermal overload protection (oL1) time.
A larger L1-02 time will increase the time for an oL1 fault
to occur.
This parameter does not typically require adjustment.
Should be set in accordance with the overload tolerance of
the motor.
Sets operation when the motor temperature analog input
(H3-02 and H3-10 = E) exceeds the oH3 alarm level (PTC
input level: Tr-5°C).
0: Ramp to Stop
1: Coast to Stop
2: Fast-stop using C1-09
3: Alarm Only ("oH3" will flash)
B.3 Parameter Table
Control
Mode
Range Def.
V/f OL
V
-100.0 to
0.0% A A A
+100.0
0.00 to
0.10 s A A A
2.00
000, 031,
for 101, 102,
102 A A A
105, 116,
501, 502
1440
0 to 32000 A A A
Hz
0.1 to 0.5
A A A
1000.0 Hz
Control
Mode
Range Def.
OL
V/f
V
1
0 to 4 S S
<2>
1.0
0.1 to 5.0 A A A
min
0 to 3 3 A A A
Addr.
Pg.
Hex
P
M
42F 184
430 184
431 184
432 184
43F 184
Addr.
Pg.
Hex
P
M
S 480 185
481 187
482 188
B
343