u
Alarm Detection
n
Alarm Codes
An alarm is indicated by a code on the data display and the flashing ALM LED. The drive output is not necessarily switched
off.
To remove an alarm, trace and remove the cause, and reset the drive by pushing the Reset key on the keypad or cycle the
power supply.
Refer to the User Manual for a complete list of causes and possible solutions.
Table i.29 Minor Fault and Alarm Displays
HOA
Keypad
Display
Alarm Name
bb
Drive Baseblock
Drive output interrupted as indicated by an external
baseblock signal.
bUS
Option Card Communications Error
• The connection was lost after initial communication was
established.
• Assign a Run command frequency reference to the
option.
CALL
Serial Communication Transmission Error
Communication has not yet been established.
CE
MEMOBUS/Modbus Communication Error
Control data was not received correctly for two seconds.
CrST
Cannot Reset
dnE
Drive Disabled
EF
Run Command Input Error
Both forward run and reverse run closed simultaneously
for longer than 0.5 s.
EF0
Option Card External Fault
An external fault condition is present.
EF1 to EF7
External Fault (input terminal S1 to S7)
External fault at multi-function input terminal S1 to S7.
FbH
Excessive PI Feedback
The PI feedback input is higher than the level set to b5-36
for longer than the time set to b5-37, and b5-12 is set to 1
or 4.
FbL
PI Feedback Loss
The PI feedback input is lower than the level set to b5-13
for longer than the time set to b5-14, and b5-12 is set to 1
or 4.
HCA
Current Alarm
Drive current exceeded overcurrent warning level (150%
of the rated current).
inTLK
<1>
Interlock Open
ALM LED will not blink.
LT-1
Cooling Fan Maintenance Time
The cooling fan has reached its expected maintenance
period and may need to be replaced.
Note:
An alarm output (H2-
oo
= 10) will only be
triggered if both (H2-
oo
= 2F and
H2-
oo
= 10) are set.
HOA
Keypad
Display
Alarm Name
LT-2
Capacitor Maintenance Time
The main circuit and control circuit capacitors are nearing
the end of their expected performance life.
Note:
An alarm output (H2-
oo
= 10) will only be
triggered if H2-
oo
= 2F.
LT-3
Soft Charge Bypass Relay Maintenance Time
The DC bus soft charge relay is nearing the end of its
expected performance life.
Note:
An alarm output (H2-
oo
= 10) will only be
triggered if H2-
oo
= 2F.
LT-4
IGBT Maintenance Time (50%)
IGBTs have reached 50% of their expected performance
life.
Note:
An alarm output (H2-
oo
= 10) will only be
triggered if H2-
oo
= 2F.
oH
Heatsink Overheat
The temperature of the heatsink exceeded the overheat pre-
alarm level set to L8-02 (90-100 °C). Default value for
L8-02 is determined by drive capacity (o2-04).
oH2
Drive Overheat Warning
“Drive Overheat Warning” was input to a multi-function
input terminal, S1 through S7 (H1-
oo
= B)
oH3
Motor Overheat
The motor overheat signal entered to a multi-function
analog input terminal exceeded the alarm level (H3-02 or
H3-10 = E).
oL3
Overtorque 1
Drive output current was greater than L6-02 for longer than
the time set to L6-03.
ov
DC Bus Overvoltage
The DC bus voltage exceeded the trip point.
• For 200 V class drives: approximately 410 V
• For 400 V class drives: approximately 820 V (740 V
when E1-01 is less than 400)
PASS
MEMOBUS/Modbus Test Mode Complete
SAFE
Customer Safety
Customer Safeties mult-function input is open. This alarm
has display priority over the Interlock Open (inTLK).
SE
MEMOBUS/Modbus Communication Test Mode Error
Note:
This alarm will not trigger a multi-function
output terminal that is set for alarm output
(H2-
oo
= 10).
TrPC
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance
life.
i.6 Troubleshooting
64
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide
Содержание Z1000 CIMR-ZU*A Series
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