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[ 18 ]
er4
Option card communications error
Problem A communications error occurred between the option card and the inverter.
Possible Causes What to Check and Suggested Measures
(1) There was a problem with
the connection between
the bus option card and
the inverter.
Check whether the connector on the bus option card is properly mating with
the connector of the inverter.
Î Reload the bus option card into the inverter.
(2) There was a high intensity
noise from outside.
Check whether appropriate noise control measures have been implemented
(e.g. correct grounding and routing of control and main circuit wires and
communications cable).
Î Reinforce noise control measures.
[ 19 ]
er5
Option card error
An error detected by the option card. Refer to the instruction manual of the option card for details.
[ 20 ]
er6
Incorrect operation error
Problem You incorrectly operated the inverter.
Possible Causes What to Check and Suggested Measures
(1) The key was pressed
when H96 = 1 or 3.
Although a Run command had been inputted from the input terminal o
through the communications port, the inverter was forced to decelerate to
stop.
Î If this was not intended, check the setting of H96.
(2) The start check function
was activated when H96 =
2 or 3.
With a Run command being inputted, any of the following operations has
been performed:
- Turning the power ON
- Releasing the alarm
- Switching the enable communications link (LE) operation
Î Review the running sequence to avoid input of a Run command when this
error occurs.
If this was not intended, check the setting of H96.
(To reset the alarm, turn the Run command OFF.)
(3) The forced stop digital
input (STOP) was turned
ON.
Turning ON the forced stop digital input (STOP) decelerated the inverter to
stop according to the specified deceleration period (H96).
Î If this was not intended, check the settings of E01 through E05 on
terminals X1 through X5.
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