Yaskawa Z1000U - Manual (Page 289)

B.9 L: Protection Function
L parameters provide protection to the drive and motor, including control during momentary power loss, Stall Prevention,
frequency detection, fault restarts, overtorque detection, and other types of hardware protection.
u L1: Motor Protection
No.
(Addr.
Hex)
Name LCD Display Description Values Page
L1-01
(0480)
Motor Overload
Protection Selection
Mtr OL Charact
0: OL1 Disabled
1: VT Motor
4: PM Motor
0: Disabled
1: General purpose motor (standard fan cooled)
4: PM motor with variable torque
The drive may not be able to provide protection when using
multiple motors, even if overload is enabled in L1-01. Set L1-01
to 0 and install separate thermal relays to each motor.
Default: <1>
Range: 0, 1, 4
–
L1-02
(0481)
Motor Overload
Protection Time
MOL Time Const
Sets the motor thermal overload protection (oL1) time. Default: 1.0 min
Min.: 1.0
Max.: 5.0
–
L1-03
(0482)
Motor Overheat Alarm
Operation Selection
(PTC input)
Mtr OH Alarm Sel
0 : Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm only
Sets operation when the motor temperature analog input
(H3-02 or H3-10 = E) exceeds the alarm level.
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in
C1-09)
3: Alarm only (“oH3” will flash)
Default: 3
Range: 0 to 3
–
L1-04
(0483)
Motor Overheat Fault
Operation Selection
(PTC input)
Mtr OH Fault Sel
0 : Ramp to Stop
1: Coast to Stop
2: Fast-Stop
Sets stopping method when the motor temperature analog input
(H3-02, or H3-10 = E) exceeds the oH4 fault level.
0: Ramp to stop
1: Coast to stop
2: Fast Stop (decelerate to stop using the deceleration time in
C1-09)
Default: 1
Range: 0 to 2
–
L1-05
(0484)
Motor Temperature
Input Filter Time (PTC
input)
Mtr Temp Filter
Adjusts the filter for the motor temperature analog input
(H3-02, or H3-10 = E).
Default: 0.20 s
Min.: 0.00
Max.: 10.00
–
L1-08
(1103)
oL1 Current Level oL1 Current Lvl
Sets the reference current for motor thermal overload detection
for the motor in amperes.
Default: <3>
Min.: 10% of
drive rated
current
Max.: 150% of
drive rated
current
<4>
–
L1-13
(046D)
Continuous
Electrothermal
Operation Selection
Mtr OL Mem Sel
0: Disabled
1: Enabled
2: Enabled(RTC)
0: Disabled
1: Enabled
2: Enable using Real Time Clock
Default: 1
Range: 0 to 2
–
<1> Default setting is determined by parameter A1-02, Control Method Selection.
<3> Default setting is determined by parameter o2-04, Drive Model Selection.
<4> Display is in the following units:
2o0028, 2o0042, and 4o0011 to 4o0027: 0.01 A units
2o0054 to 2o0248 and 4o0034 to 4o0414: 0.1 A units
B.9 L: Protection Function
YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual 289
B
Parameter List