Yaskawa CIMR-LU Drives - Manual (Page 135)

5 Troubleshooting
YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide 135
Tr
ou
blesh
oot
ing
5
EF
Up/Down Command Error
Both forward run and reverse run closed simultaneously for over 0.5 s.
EF0
Option Card External Fault
An external fault condition is present.
EF3
External fault (input terminal S3)
External fault at multi-function input terminal S3.
EF4
External fault (input terminal S4)
External fault at multi-function input terminal S4.
EF5
External fault (input terminal S5)
External fault at multi-function input terminal S5.
EF6
External fault (input terminal S6)
External fault at multi-function input terminal S6.
EF7
External fault (input terminal S7)
External fault at multi-function input terminal S7.
EF8
External fault (input terminal S8)
External fault at multi-function input terminal S8.
Hbb
Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release <1>
Both Safe Disable Input channels are open.
HbbF
Safe Disable Circuit Fault Signal (H1-HC, H2-HC) Release <1>
One Safe Disable channel is open while the other one is closed.
HCA
High Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
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-
= 10) will only be triggered if H2- = 2F.
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-
= 10) will only be triggered if H2- = 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-
= 10) will only be triggered if H2- = 2F.
LT-4
IGBT Maintenance Time (90%)
IGBTs have reached 90% of their expected performance life.
Note: An alarm output (H2-
= 10) will only be triggered if H2- = 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).
oH3
Motor Overheat Alarm (PTC thermistor input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the alarm detection level.
• Detection requires multi-function analog input H3-02 or H3-10 be set to “E”.
oL3
Overtorque Detection 1
Drive output current (or torque in OLV, CLV, CLV/PM) was greater than L6-02 for longer than the time
set in L6-03.
oL4
Overtorque Detection 2
Drive output current (or torque in OLV, CLV, CLV/PM) was greater than L6-05 for longer than the time
set in L6-06.
oS
Overspeed (for Control Mode with Encoder)
The motor speed feedback exceeded the F1-08 setting.
Digital Operator Display Minor Fault Name
TOEP_C710616_38F_5_0.book 135 ページ ２０１３年１２月４日 水曜日 午前９時５６分