YASKAWA L1000A Series, Техническое руководство

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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
EE
CE
MEM OBUS/M odbus Communication Error
Control data was not received correctly for two seconds.
C a u s e P o s s ib le S o l u t i o n s
A data error occurred due to noise.
• Check options available to m inim ize the effects o f noise.
• Take steps to counteract noise in the control circuit wiring, main circuit lines, and ground wiring.
• Reduce noise on the controller side.
• U se surge absorbers for the magnetic contactors or other components that m ay be causing the disturbance.
• U se only recommended shielded line. Ground the shield on the controller side or on the drive input power side.
• Separate all wiring for comm. devices from drive input power lines. Install an EMC noise filter to the drive input power supply.
Communication protocol is incompatible.
• Check the H5 parameter settings as w ell as the protocol setting in the controller.
• Ensure settings are compatible.
The Communication Fault Detection Time (H 5-09)
is set shorter than the time required for a
communication cycle to take place.
• Check the PLC.
• Change the software settings in the PLC.
• Set a longer Communication Fault Detection Time (H5-09).
Incompatible PLC software settings or there is a
hardware problem.
• Check the PLC.
• Rem ove the cause o f the error on the controller side.
Communications cable is disconnected or damaged.
• Check the connector to make sure the cable has a signal.
• Replace the communications cable.
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
Ci-sr CrST Cannot Reset
C a u s e P o s s ib le S o l u t i o n s
A fault reset command was entered while the Up/
D ow n command was still present.
• Ensure that a U p/Dow n command cannot be entered from the external terminals or option card during fault reset.
• Turn o ff the U p/D ow n command.
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
dEu dEv
Speed Deviation (when using a PG option card)
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.
C a u s e P o s s ib le S o l u t i o n s
Load is too heavy Reduce the load.
A ccel/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 o f 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.
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
EE EF
U p/Dow n Command Error
Both forward run and reverse run closed sim ultaneously for over 0.5 s.
C a u s e P o s s ib le S o l u t i o n s
Sequence error
Check the forward and reverse command sequence and correct the problem.
N o t e :
W hen minor fault EF detected, motor ramps to stop.
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
EFO EF0
Option Card External Fault
An external fault condition is present.
C a u s e P o s s ib le S o l u t i o n s
A n external fault was received from the PLC with
F6-03 = 3 (causing the drive to continue running
when an external fault occurs).
• Rem ove the cause o f the external fault.
• Rem ove the external fault input from the PLC.
There is a problem with the PLC program. Check the PLC program and correct problems.
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
EF3 EF3
External fault (input terminal S3)
External fault at multi-function input terminal S3.
EF4 EF4
External fault (input terminal S4)
External fault at multi-function input terminal S4.
EF5
EF5
External fault (input terminal S5)
External fault at multi-function input terminal S5.
EFB EF6
External fault (input terminal S6)
External fault at multi-function input terminal S6.
EF1 EF7
External fault (input terminal S7)
External fault at multi-function input terminal S7.
EF8 EF8
External fault (input terminal S8)
External fault at multi-function input terminal S8.
C a u s e P o s s ib le S o l u t i o n s
A n external device has tripped an alarm function. Rem ove the cause o f the external fault and reset the m ulti-function input value.
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault detection (Ш -П П = 2C to 2F).
• Reconnect the signal line.
M ulti-function contact inputs are set incorrectly.
• Check if the unused terminals have been set for Ш - П П = 2C to 2F (External Fault).
• Change the terminal settings.
254 YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual