Hardware Protection: L8 - YASKAWA VARISPEED-616G5 Instruction Manual

Hardware Protection: L8

J
Name
C Constant
Number
Display
Protect selection for
internal DB resistor
L8-01
(Type ERF)
DB Resistor Prot
Overheat pre-alarm
level
L8 02 L8-02
OH Pre-Alarm Lvl
Operation selection
after overheat pre-
alarm
L8-03
OH Pre-Alarm Sel
Input open-phase
protection selection
L8 05 L8-05
Ph Loss In Sel
Output open-phase
protection selection
L8 07 L8-07
Ph Loss Out Sel
Ground protection
selection
L8 10 L8-10
Gnd Det Sel
Carrier frequency re-
duction selection
L8 17 L8-17
L-Spd IGBT Prtct
Description
0: Disabled (no overheating
protection)
1: Enabled (overheating protec- 1: Enabled (overheating protec-
tion)
Sets the detection temperature for
the Inverter overheat detection
pre-alarm in °C.
:The pre-alarm detects when the l d t t h th
:Th
cooling fin temperature reaches
the set value.
Sets the operation for when the In-
verter overheat pre-alarm goes
ON.
0: Decelerate to stop in decelera-
tion time C1-02.
1: Coast to stop
2: Fast stop in fast-stop time p p
C1 09 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.
0: Disabled
1: Enabled (Detects if input cur-
rent open-phase, power supply p p , p pp y
voltage imbalance or main cir- lt i b l i i
cuit electrostatic capacitor de-
terioration occurs.)
0: Disabled
1: Enabled (Output open-phase
detected at less than 5% of In-
verter rated current.)
:W e app ed oto capac ty s :When applied motor capacity is
small for Inverter capacity, out- ll i
put open-phase may be de-
tected inadvertently or open-
phase may not be detected. In
this case, set to 0 (Disabled.)
0: Disabled
1: Enabled 1 E bl d
0: No carrier frequency reduction
1: With carrier frequency reduc-
tion
2: For factory adjustments
3: For factory adjustments
:If the metallic noise (carrier (
noise) generated from the mo- i ) t d f th
tor at low speeds (less than 6
Hz) becomes a problem, set
L8-17 to 0 and L8-19 to 1.
However, do not set L8-17 or
L8-19 to 0 when using V/f and
open-loop vector control.
8 - 41
8.2 Programming Mode Constants
Change Change
S Setting Factory during
Opera-
Range Setting
V/f
tion
0, 1 0 B
×
50 to
A A
95 95
× ×
130 130
0 to 3 3 A
×
A A
0, 1 0, 1 0 0
× ×
A A
0, 1 0, 1 0 0
× ×
A A
0, 1 0, 1 1 1
× ×
A A
0 to 3 0 to 3 1 1
× ×
Control Methods
V/f
Page
Open
Flux
with
Loop
Vector
Vector
PG
B B B 7 - 95
A A A A A A
7 95 7 - 95
A A A 7 - 95
A A A A A A
7 - 95 7 95
A A A A A A
7 95 7 - 95
A A A A A A
−−
A A A A
7 95 7 - 95
× ×
8