Hardware Protection - YASKAWA Varispeed L7 Instruction Manual

Hardware Protection: L8
Name
Param-
eter
Number
Display
Overheat pre- Sets the detection temperature
alarm level for the Inverter overheat detec-
tion pre-alarm in °C.
L8-02
The pre-alarm detects when
OH Pre-
the cooling fin temperature
Alarm Lvl
reaches the set value.
Sets the operation for when the
Operation
Inverter overheat pre-alarm
selection after
occurs.
overheat pre-
0: Decelerate to stop using the
alarm
deceleration time C1-02.
1: Coast to stop
L8-03 2: Fast stop in fast-stop time
C1-09.
OH Pre-
3: Continue operation
Alarm Sel
(Monitor display only.)
A fault will be given in setting
0 to 2 and a minor fault will be
given in setting 3.
Input open- 0: Disabled
phase protec- 1: Enabled (Detects power
tion selection supply open-phase, power
L8-05
supply voltage imbalance
or DC bus electrostatic
Ph Loss In Sel
capacitor deterioration.)
0: Disabled
Output open-
1: Enabled, 1 Phase
phase protec-
Observatioin
tion selection
2: Enabled, 2 and Phase
Observatioin
An output open-phase is
L8-07 detected at less than 5% of
Inverter rated current.
Ph Loss Out
When the applied motor capac-
Sel
ity is small compared to the
Inverter capacity, the detection
may not work properly and
should be disabled.
Ground pro-
0:Disabled
tection selec-
1:Enabled
tion
L8-09 It is not recommended to use
another setting than factory
Ground Fault
setting.
Sel
Cooling fan
Set the ON/OFF control for the
control selec-
cooling fan.
tion
L8-10 0: ON when Inverter is
running only
Fan On/Off
1: ON whenever power is ON
Sel
Cooling fan
Set the time in seconds to
control delay
delay turning OFF the cooling
time
L8-11
fan after the inverter STOP
Fan Delay
command is given.
Time
Ambient tem-
perature
L8-12 Sets the ambient temperature.
Ambient
Temp
Setting Factory
Description
Range Setting
50 to
75 °C*
130
0 to 3
0 or 1
0 to 2
0 or 1
0 or 1
0 to 300
45 to 60
http://nicontrols.com
Control Methods
Change
during
Open Closed
Opera-
Loop
V/f
tion
Vector Vector
No A A
3 No A A
0 No A A
2 No A A
1 No A A
0 No A A
60 s No A A
45 °C
No A A
User Parameter Tables
MEMO-
BUS
Page
Loop
Register
A 4AEH 5-40
A 4AFH 5-40
A 4B1H 5-40
A 4B3H 5-41
A 4B5H 5-41
A 4B6H 5-42
A 4B7H 5-42
A 4B8H 5-42
4-
4
39