L: Protection Function; L8: Drive Protection - YASKAWA A1000 Installation Manual

B.1 L: Protection Function
B.1 L: Protection Function

L8: Drive Protection

No.
(Addr. Name
Hex)
Internal Dynamic Braking
L8-01
Resistor Protection Selection
(4AD)
(ERF type)
L8-02
Overheat Alarm Level
(4AE)
L8-03 Overheat Pre-Alarm
(4AF) Operation Selection
L8-05 Input Phase Loss Protection
(4B1) Selection
L8-07 Output Phase Loss Protection
(4B3) Selection
L8-09 Output Ground Fault
(4B5) Detection Selection
L8-10 Heatsink Cooling Fan
(4B6) Operation Selection
L8-11 Heatsink Cooling Fan Off
(4B7) Delay Time
L8-12
Ambient Temperature Setting Enter the ambient temperature. This value adjusts the oL2 detection level.
(4B8)
L8-15 oL2 Characteristics Selection
(4BB) at Low Speeds
L8-18 Software Current Limit
(4BE) Selection
L8-19 Frequency Reduction Rate
(4BF) during Overheat Pre-Alarm
L8-27
Overcurrent Detection Gain
(4DD)
L8-29 Current Unbalance Detection
(4DF) (LF2)
Main Contactor and Cooling
L8-32
Fan Power Supply Failure
(4E2)
Selection
60
0: Resistor overheat protection disabled
1: Resistor overheat protection enabled
An overheat alarm occurs when heatsink temperature exceeds the L8-02
level.
0: Ramp to stop. A fault is triggered.
1: Coast to stop. A fault is triggered.
2: Fast Stop. Decelerate to stop using the deceleration time in C1-09. A fault
is triggered.
3: Continue operation. An alarm is triggered.
4: Continue operation at reduced speed as set in L8-19.
Selects the detection of input current phase loss, power supply voltage
imbalance, or main circuit electrolytic capacitor deterioration.
0: Disabled
1: Enabled
0: Disabled
1: Enabled (triggered by a single phase loss)
2: Enabled (triggered when two phases are lost)
0: Disabled
1: Enabled
0: During run only. Fan operates only during run for L8-11 seconds after
stop.
1: Fan always on. Cooling fan operates whenever the drive is powered up.
Sets a delay time to shut off the cooling fan after the Run command is
removed when L8-10 = 0.
0: No oL2 level reduction below 6 Hz.
1: oL2 level is reduced linearly below 6 Hz. It is halved at 0 Hz.
0: Disabled
1: Enabled
Specifies the frequency reference reduction gain at overheat pre-alarm when
L8-03 = 4.
Sets the gain for overcurrent detection as a percentage of the motor rated
current. Overcurrent is detected using the lower value between the
overcurrent level of the drive or the value set to L8-27.
0: Disabled
1: Enabled
Determines drive response when a fault occurs with the internal cooling fan.
0: Ramp to stop
1: Coast to stop
2: Fast stop (Decelerate to stop using the deceleration time set to C1-09)
3: Alarm only ("FAn" will flash)
4: Continue operation at reduced speed as set to L8-19.
YASKAWA ELECTRIC TOEP C710616 50B YASKAWA AC Drive - A1000 6-Phase/12-Pulse Input Installation Guide
Description Values
Default: 0
Range: 0, 1
Default:
<1>
Min.: 50°C
Max.: 150°C
Default: 3
Range: 0 to 4
Default: 1
Range: 0, 1
Default: 1
Range: 0 to 2
Default:
<1>
Range: 0, 1
Default: 0
Range: 0, 1
Default: 60 s
Min.: 0
Max.: 300
Default: 40°C
Min.: -10
Max.: 50
Default: 1
Range: 0, 1
Default: 0
Range: 0, 1
Default: 0.8
Min.: 0.1
Max.: 0.9
Default: 300.0%
Min.: 0.0
Max.: 300.0
Default: 1
Range: 0, 1
Default: 1
Range: 0 to 4