Yaskawa J1000 Compact Vector Control Drive - Manual (Page 154)

Digital Operator Display Minor Fault Name
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.
FbH
Excessive PID Feedback
The PID feedback input is higher than the level set in b5-36 for longer than the time
set in b5-37, and b5-12 is set to 1 or 4.
FbL
PID Feedback Loss
The PID feedback input is lower than the level set in b5-13 for longer than the time
set in b5-14, and b5-12 is set to 1 or 4.
Hbb
Safe Disable Signal Input
The Safe Disable Input channel is open.
HbbF
Safe Disable Signal Input
The safe disable input hardware is defective.
HCA
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 (50%)
IGBTs have reached 50% of their expected performance life.
Note: An alarm output (H2- = 10) will only be triggered if H2- = 2F.
oH
Heatsink Overheat
The temperature exceeded the value set to L8-02.
5.3 Alarm Detection
154 YASKAWA ELECTRIC TOEP C710606 47C YASKAWA AC Drive – V1000 Quick Start Guide