YASKAWA V1000 Technical Manual page 363

No. Name
Overheat Pre-Alarm
L8-03
Operation Selection
Input Phase Loss Protection
L8-05
Selection
Output Phase Loss
L8-07
Protection Selection
Output Ground Fault
L8-09
Detection Selection
Heatsink Cooling Fan
L8-10
Operation Selection
Heatsink Cooling Fan
L8-11
Operation Delay Time
Ambient Temperature
L8-12
Setting
oL2 Characteristics
L8-15
Selection at Low Speeds
Soft Current Limit Selection
L8-18
Frequency Reduction Rate
L8-19
during oH Pre-Alarm
Current Unbalance
L8-29
Detection (LF2)
Installation Method
L8-35
Selection
Carrier Frequency
L8-38
Reduction
Carrier Frequency
L8-40
Reduction Time
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Description
Sets the drive operation when an overheat alarm oH is
detected.
0: Ramp to Stop using the active decel time.
1: Coast to Stop.
2: Fast-stop using the time set in C1-09.
3: Alarm Only. Drive continues running, but displays an
alarm.
4: Reduced Speed Operation. Drive continues to run with
reduced frequency reference as specified in L8-19.
Settings 0 through 2 trigger a fault relay if the heatsink
becomes too hot.
Selects the detection of input current phase loss, power
supply voltage imbalance, or main circuit electrolytic
capacitor deterioration.
0: Disabled
1: Enabled
Note: This parameter is disabled in 200 V single-phase
drives.
Selects the output phase loss detection.
0: Disabled
1: Enabled (triggered by a single phase loss)
2: Enabled (triggered when two phases are lost)
Output phase loss is detected when operating with less than
5% of the drive rated current. Detection can mistakenly
occur if the motor is small relative to the drive capacity rating
(this parameter should be disabled in such cases).
Selects the output ground fault detection.
0: Disabled
1: Enabled
Controls the heatsink cooling fan operation.
0: Run with timer (Fan operates only during run and for
L8-11 seconds after stop.)
1: Run always (Cooling fan operates whenever the drive is
powered up.)
This parameter sets the delay time for the cooling fan to shut
off after the run command is removed when L8-10 = 0.
Used to input the ambient temperature. This value adjusts
the drives oL2 detection level.
Sets the oL2 characteristics at output frequencies below 6
Hz.
0: No oL2 level reduction below 6 Hz.
1: oL2 level is reduced linearly below 6 Hz. It is halved at 0
Hz.
Selects the software current limit function. Typically no
adjustment is required.
0: Disabled
1: Enabled
Specifies the frequency reference reduction gain at overheat
pre-alarm when L8-03 = 4.
Selects the detection of unbalanced output currents caused
by faulty devices in the output circuit.
0: Disabled
1: Enabled
Selects the installation type:
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
3: Finless Drive or External Heatsink Installation
Provides protection to the IGBTs by reducing the carrier
frequency at low speeds.
0: Disabled
1: Enabled below 6 Hz
2: Enabled for the whole speed range
Sets the time for that the drive continues running with
reduced carrier frequency after the carrier reduction
condition has gone (see also L8-38).
A setting of 0.00 s disables the carrier frequency reduction
time.
B.2 Parameter Table
Control
Mode
Range Def.
O
V/ P
L
f M
V
0 to 4 3 A A A
0
0, 1 A A A
<19>
0 to 2 0 A A A
0, 1 <3> A A A
0, 1 0 A A A
0 to 300 60 s A A A
-10 to 50 40 °C A A A
0, 1 1 A A A
<15>
0, 1 A A −
0.1 to 1.0 0.8 A A A
0, 1 1 − − A
<3>
<13>
0 to 3 Α Α A
<19>
<3>
0 to 2 A A A
0.00 to
0.50 A A A
2.00
Addr.
Pg.
Hex
4AF 224
4B1 225
4B3 226
4B5 226
4B6 226
4B7 226
4B8 226
4BB 226
4BE 227
4BF 225
4DF 227
4EC 227
4EF 227
B
4F1 228
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