6.4 Alarm Detection
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
Hbb
Hbb
Safe D isable Circuit Fault Signal (H1-HC, H2-H C) Release
Both Safe D isable Input channels are open.
C a u s e
P o s s ib le S o l u t i o n s
Both Safe D isable Inputs H1 and H2 are open.
• Check signal status at the input terminals H1 and H2.
• Check the Sink/Source Selection for the digital inputs.
• If the Safe D isable function is not utilized, check if the terminals H1-HC, and H2-HC are linked.
Internally, both Safe D isable channels are broken.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
HbbF
HbbF
Safe D isable Circuit Fault Signal (H1-HC, H2-HC) Release
One Safe D isable channel is open w hile the other one is closed.
C a u s e
P o s s ib le S o l u t i o n s
The signals to the Safe D isable inputs are wrong or
the wiring is incorrect.
Check signal status at the input terminals H1 and H2. If the Safe D isable function is not utilized, the terminals H1-HC, and H2-HC
must be linked.
One o f the Safe D isable channels is faulty.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
H[ R
HCA
High Current Alarm
Drive current exceeded overcurrent warning level (150% o f the rated current).
C a u s e
P o s s ib le S o l u t i o n s
Load is too heavy.
Either reduce the load for applications with repetitive operation (repetitive stops and starts, etc.), or replace the drive.
A ccel/decel ramp is too short.
Calculate the amount o f torque required for the desired acceleration and/or deceleration ramp relative to the inertia moment o f the
load.
If the torque level is not right for the load, take the follow ing steps:
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Increase the capacity o f the drive.
A special-purpose motor is being used, or the drive is
attempting to run a motor greater than the maximum
allowable capacity.
• Check the motor capacity.
• U se a motor appropriate for the drive. Ensure the motor is within the allowable capacity range.
The current level increased due to a momentary
power loss or w hile attempting to perform a fault
reset.
The alarm w ill appear only briefly. There is no need to take action to prevent the alarm from occurring in such instances.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
I
Г
_ i
LI
I
LT-1
C ooling Fan Maintenance Time
The cooling fan has reached its expected maintenance period and may need to be replaced.
N o t e :
A n alarm output (H 2 -D D = 10) w ill only be triggered if H 2 -D D = 2F.
C a u s e
P o s s ib le S o l u t i o n s
The cooling fan has reached 90% o f its expected
performance life.
Replace the cooling fan and reset the Maintenance Monitor by setting o4-03 to 0.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
1 г - P
L i
С
LT-2
Capacitor Maintenance Time
The main circuit and control circuit capacitors are nearing the end o f their expected performance life.
N o t e :
A n alarm output (H 2 -D D = 10) w ill only be triggered if H 2 -D D = 2F.
C a u s e
P o s s ib le S o l u t i o n s
The main circuit and control circuit capacitors have
reached 90% o f their expected performance life.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
i Г _ J
LI
3
LT-3
Soft Charge Bypass Relay Maintenance Time
The DC bus soft charge relay is nearing the end o f its expected performance life.
N o t e :
A n alarm output (H 2 -D D = 10) w ill only be triggered if H 2 -D D = 2F.
C a u s e
P o s s ib le S o l u t i o n s
The D C bus soft charge relay has reached 90% o f
expected performance life.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest
sales representative.
D i g i t a l O p e r a t o r D i s p l a y
M i n o r F a u l t N a m e
L f - 4
LT-4
IGBT Maintenance Time (90%)
IGBTs have reached 90% o f their expected performance life.
N o t e :
A n alarm output (H 2 -D D = 10) w ill only be triggered if H 2 -D D = 2F.
C a u s e
P o s s ib le S o l u t i o n s
IGBTs have reached 90% o f their expected
performance life.
Check the load, carrier frequency, and output speed.
NOTICE:
Optimize Performance Life. To m axim ize drive performance life, make sure the drive output current does not exceed 150% o f the
drive rated current. Expected performance life estimates the number o f drive starts at three m illion times if output current does not
exceed 150%. This assumes the carrier frequency is at its default setting (8 kH z for m odels C IM R -L D 2A 0018 to 2A 0115, 4A 0009 to
4A 0091, 5 kH z for m odels C IM R -L D 2A 0145 to 2A 0283, 4A 0112 to 4A 216, and 2 kHz for m odels CIM R-L□ 2A 0316, 2A 0415) and
a peak current o f less than 150% o f the drive rated current.
i6_
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
255
T
ro
u
b
le
s
h
o
o
ti
n
g