YASKAWA Varispeed G7 Series Instruction Manual page 201

Name
Con-
Description
stant
Display
Number
Neutral point Enable or disable neutral
voltage con- point voltage control for the
trol selection 400 V Class.
L8-22
Usually, there is no need to
*7
change this setting.
Vcn Ctrl Sel
0: Disabled
1: Enabled
OH1 detec-
tion of
0: Disabled (FAN minor
Inverter's
fault detection)
L8-32
cooling fan
1: Enabled (OH1 major fault
*3
detection)
OH1 Detect
Sel
Carrier
0: Disabled (No carrier
frequency
frequency reduction.)
L8-38
reduction
1: Enabled (Carrier
*4
selection
frequency is reduced
accordingly.)
Prtct@L-Spd
Reduced
carrier
Sets the reduced carrier fre-
L8-39
frequency
quency.
*4
L-Spd
Carrier F
Current alarm Allows or restricts an alarm
from being triggered when
the relative output current
L8-41
rises above 150%.
HC Alarm
*4
0: Disabled.
Sel
1: Enabled (alarm will be
output).
* 1. The setting range depends on the setting of L8-32.
L8-32 = 1: 50°C to 130°C
L8-32 = 0: 50°C to 104°C
* 2. The factory setting depends on the Inverter capacity. The value for a 200 V Class Inverter of 0.4 kW is given.
* 3. Applicable for G7-Series Inverters with software versions PRG 1038 and later.
* 4. Applicable for G7-Series Inverters with software versions PRG 1039 and later.
* 5. If a current exceeding 110% of the Inverter rated current flows through the unit, the carrier frequency will automatically decrease and electromagnetic
noise will occur.
* 6. The lower limits are 0.4 kHz for V/f control and 1.0 kHz for flux vector control. The upper limit is the same value as that of the factory setting for L8-
39.
* 7. Applicable for G7-Series Inverters with software versions PRG 1043 and later.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0 or 1 1 No A
0 or 1 1 No A
1
0 or 1 No A
*5
0, 4 to
2.0 kHz
No A
2.0
*2 *5
*6
0 or 1 0 No A
User Constant Tables
MEMO-
Open Open
BUS
V/f Loop Flux Loop
Regis-
with Vec- Vec- Vec-
ter
PG tor tor tor
1 2
A A A A 4C3H
A A A A 4E2H
A A No No 4EFH
A A No No 4F0H
A A A A 4F2H
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