L: Protection Function - YASKAWA Z1000U Technical Manual

B.9 L: Protection Function
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 and undertorque detection, and other types of hardware protection.
u
L1: Motor Protection
No.
(Addr. Name
Hex)
L1-01 Motor Overload
(0480) Protection Selection
L1-02 Motor Overload
(0481) Protection Time
Motor Overheat Fault
L1-04
Operation Selection
(0483)
(PTC input)
u
L2: Momentary Power Loss Ride-Thru
No.
(Addr. Name
Hex)
L2-01 Momentary Power Loss
(0485) Operation Selection
L2-02 Momentary Power Loss
(0486) Ride-Thru Time
Momentary Power Loss
L2-03
Minimum Baseblock
(0487)
Time
L2-21 Low Input Voltage
(04F7) Detection Level
Power Supply
L2-27
Frequency Fault
(04F7)
Detection Width
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
<2> Values shown are specific to 208 Vac. Double the value for 480 Vac.
300
LCD Display
0: Disabled
Mtr OL Charact 1: General purpose motor (standard fan cooled)
0: OL1 Disabled The drive may not be able to provide protection when using
1: VT Motor multiple motors, even if overload is enabled in L1-01. Set L1-01
to 0 and install separate thermal relays to each motor.
Sets the motor thermal overload protection (oL1) time.
MOL Time Const
Sets stopping method when the motor temperature analog input
Mtr OH Fault Sel (H3-02, H3-06, or H3-10 = E) exceeds the oH4 fault level.
0 : Ramp to Stop 0: Ramp to stop
1: Coast to Stop 1: Coast to stop
2: Fast-Stop 2: Fast Stop (decelerate to stop using the deceleration time in
C1-09)
LCD Display
0: Disabled.
PwrL Selection Drive trips on Uv1 fault when power is lost.
0: Disabled 1: Recover within the time set in L2-02.
1: Enbl with Timer Uv1 will be detected if power loss is longer than L2-02.
2: Enbl whl CPU act 2: Recover as long as CPU has power.
Fdv is not detected.
Sets the Power Loss Ride-Thru time. Enabled only when
PwrL Ridethru t L2-01 = 1.
Sets the minimum wait time for residual motor voltage decay
before the drive output reenergizes after performing Power
Loss Ride-Thru.
PwrL Baseblock t
Increasing the time set to L2-03 may help if overcurrent or
overvoltage occur during Speed Search or during DC Injection
Braking.
AVV Detect evel Set the level at which to detect a low input voltage.
Sets the frequency width to use to detect power supply
FDV Detect Width
frequency fault (Fdv).
Description
Description
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
Values Page
Default: 1
150
Range: 0, 1
Default: 1.0 min
Min.: 1.0 151
Max.: 5.0
Default: 1
–
Range: 0 to 2
Values Page
Default: 2
151
Range: 0 to 2
Default: 0.5 s
Min.: 0.0 152
Max.: 2.5
<1>
Default:
152
Min.: 0.1 s
Max.: 5.0 s
Default: 150 V
<2>
Min.: 100 V –
<2>
Max.: 230 V
Default: 6.0 Hz
Min.: 3.0 Hz –
Max.: 20.0 Hz