Infranor SMT-BD2/m, Руководство пользователя

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CHAPTER 8 – Troubleshooting
SMT-BD2/m
this case, the ZM pitch parameter value must be set at 0.
For the Sin/Cos encoder configuration:
ƒ Check that the encoder signal jumpers COD are correctly set (position B2)
ƒ Check for the correct encoder supply voltage value
ƒ Check for the correct encoder-amplifier-motor ground and shield connections with regard to the
recommendations of
chapter 4 .
ƒ Check for the correct encoder A channel, B channel and R reference signal waveforms.
ƒ Check for the correct Motor encoder resolution parameter value.
ƒ Check that the number of encoder pulses between two successive R reference signals is an entire multiple of
the
Motor encoder resolution value. If this condition is not fulfilled, the encoder counting protection must be
disabled in order to cancel the "Counting" fault. The encoder counting protection can be inhibited by disabling
the encoder reference channel by means of the ZM jumper (
see section 2.8 "Encoder fault" ). The encoder
counting protection can also be software disabled if the encoder marker pulse is required for the HOME
sequence. in this case, the ZM pitch parameter value must be set at 0.
A
A/
B
B/
R
R/
A
A/
B
B/
R
R/
Forward direction
Opposite direction
The encoder counting protection is checking that the encoder pulses number between two successive
Z marker pulses is an entire multiple of the
Motor encoder resolution value. When the encoder
counting protection has been disabled, the amplifier is only checking that the encoder pulses frequency
is lower than 1.5 times the maximum encoder frequency. The maximum encoder frequency is
calculated into the amplifier according to the
Motor encoder resolution parameter value and the
Maximum speed parameter value. In this case, encoder pulse noise at a frequency lower than 1.5
times the maximum encoder frequency may involve uncontrolled motor movements that may be
dangerous for operator and machine.
!
The encoder counting protection is checking that the encoder pulse number between two successive R
reference signals is an entire multiple of the
Motor encoder resolution value. When the encoder
counting protection has been disabled, the amplifier is only checking that the encoder pulse frequency
is lower than 1.5 times the maximum encoder frequency. The maximum encoder frequency is
calculated into the amplifier according to the
Motor encoder resolution parameter value and the
Maximum speed parameter value. In this case, encoder pulse noise at a frequency lower than 1.5
times the maximum encoder frequency can involve uncontrolled motor movements that may be
dangerous for operator and machine.
!
When the amplifier programme includes a HOME sequence at sequence 0, no other sequence can be
executed before sequence 0 after a COUNTING fault release.
!
When the amplifier programme includes a HOME sequence at sequence 0, no other sequence can be
executed before sequence 0 after a COUNTING fault release.
!