YASKAWA Lift Inverter L1000V, Техническое руководство

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6.4 Alarm Detection
YASKAWA EUROPE SIEP YASKAWA AC Drive L1000V Technical Manual 177
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6.4 Alarm Detection
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Alarm Codes, Causes, and Possible Solutions
Alarms are drive protection functions that do not necessarily cause the drive to stop. Once the cause of an alarm is
removed, the drive will return to the same status as before the alarm occurred.
When an alarm has been triggered, the ALM light on the digital operator display blinks and the alarm code display
flashes. If a multi-function output is set for an alarm (H2-
= 10), that output terminal will be triggered for certain
alarms. Refer to Minor Faults and Alarms on page 168 for information on alarm that trigger an alarm output.
Note: If a multi-function output is set to close when an alarm occurs (H2- = 10), it will also close when maintenance periods are
reached, triggering alarms LT-1 through LT-4 (triggered only if H2- = 2F).
Table 6.8 Alarm Codes, Causes, and Possible Solutions
Digital Operator Display Minor Fault Name
bb
Baseblock
Drive output interrupted as indicated by an external baseblock signal.
Cause Possible Solutions
External baseblock signal was entered via one of the
multi-function input terminals (S3 to S7).
Check external sequence and baseblock signal input timing.
Digital Operator Display Minor Fault Name
boL
Braking Transistor Overload
The braking transistor in the drive has been overloaded.
Cause Possible Solutions
The proper braking resistor has not been installed. Select the optimal braking resistor.
Digital Operator Display Minor Fault Name
Digital Operator Display Minor Fault Name
CrST Cannot Reset
Cause Possible Solutions
A fault reset command was entered while the Up/
Down command was still present. • Ensure that a Up/Down command cannot be entered from the external terminals or option card during fault reset.
• Turn off the Up/Down command.
Digital Operator Display Minor Fault Name
dEv
Speed Deviation (for simple PG feedback control modes)
The deviation between the speed reference and speed feedback is greater than the setting in F1-10 for longer than the time in F1-11.
Cause Possible Solutions
Load is too heavy Reduce the load.
Accel/decel ramp is too short. Increase the acceleration and deceleration times (C1-01 through C1-08).
The load is locked up. Check the machine.
Parameter settings are inappropriate. Check the settings of parameters F1-10 and F1-11.
The motor brake is not applied. Ensure the motor brake operates properly with a brake control command from the drive.
Digital Operator Display Minor Fault Name
EF
Up/Down Command Error
Both forward run and reverse run closed simultaneously for over 0.5 s.
Cause Possible Solutions
Sequence error
Check the forward and reverse command sequence and correct the problem.
Note: When minor fault EF detected, motor ramps to stop.
Digital Operator Display Minor Fault Name
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.
Cause Possible Solutions
An external device has tripped an alarm function. Remove the cause of the external fault and reset the multi-function input value.
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (H1- = 20 to 2F).
• Reconnect the signal line.
Multi-function contact inputs are set incorrectly.
• Check if the unused terminals have been set for H1- = 20 to 2F (External Fault).
• Change the terminal settings.