Hardware protection: l8 – Yaskawa G5HHP Drive User Manual
Page 304

User Constants
8.2.7 Protection Constants: L
8 - 38
J
Hardware Protection: L8
C
t t
Name
S tti
F t
Change
Control Methods
Constant
Number
Display
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
V/f
V/f
with
PG
Open
Loop
Vector
Flux
Vector
Page
L8-01
Protect selection for
internal DB resistor
(Type ERF)
0: Disabled (no overheating
protection)
1: Enabled (overheating protec-
0, 1
0
x
B
B
B
B
7 - 96
DB Resistor Prot
1: Enabled (overheating protec-
tion)
L8-02
Overheat pre-alarm
level
Sets the detection temperature for
the Inverter overheat detection pre-
alarm in °C.
;
The pre alarm detects when the
50 to
110
95
x
A
A
A
A
7 - 98
L8 02
OH Pre-Alarm Lvl
;
The pre-alarm detects when the
cooling fin temperature reaches
the set value.
110
95
x
A
A
A
A
7 - 98
L8-03
Operation selection
after overheat pre-
alarm
Sets the operation for when the In-
verter overheat pre-alarm goes ON.
0: Ramp to stop in deceleration
time C1-02.
1: Coast to stop
2: Fast stop in fast-stop time
C1-09.
0 to 3
3
x
A
A
A
A
7 - 98
OH Pre-Alarm Sel
C1-09.
3: Continue operation (Monitor
display only.)
;
A fault will be given in setting 0
to 2 and a minor fault will be
given in setting 3.
L8-05
Input open-phase
protection selection
0: Disabled
1: Enabled (Detects if input cur-
rent open-phase, power supply
voltage imbalance or main cir
0, 1
0
x
A
A
A
A
7 - 98
L8 05
Ph Loss In Sel
p
p
p
pp y
voltage imbalance or main cir-
cuit electrostatic capacitor dete-
rioration occurs.)
0, 1
0
x
A
A
A
A
7 - 98
L8-07
Output open-phase
protection selection
0: Disabled
1: Enabled (Output open-phase de-
tected at less than 5% of Invert-
er rated current.)
;
Output open-phase detection may
d t ti
t
k
0,1
0
x
A
A
A
A
7 - 98
L8 07
Ph Loss Out Sel
;
Output open phase detection may
occur or detection may not work
inadvertently when applied mo-
tor capacity is small for Inverter
capacity. In this case, set to 0
(Disabled.)
0,1
0
x
A
A
A
A
7 - 98
8