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Chapter 9 PROTECTIVE FUNCTIONS
If the inverter judges that any error relating to the SX-bus communications card has occurred, it trips with
or
displayed. If this happens, check the communications card following the instructions below.
Option communications error (Communications card hardware error) (
)
Problem A communications error occurred between the SX-bus communications card and the inverter.
Possible Causes
What to Check and Suggested Measures
(1) There was a problem with the
connection between the
communications card and the
inverter.
Check whether the connector on the communications card is properly
engaged with that on the inverter.
Reload the communications card into the inverter.
(2) Strong electrical noise.
Check whether appropriate noise control measures have been
implemented (e.g. correct grounding and routing of signal wires,
communications cables, and main circuit wires).
Implement noise control measures.
(3) More than one communications
card of the same type is
mounted.
Check the type of the communications cards mounted on the inverter.
Mount only one communications card of the same type on the inverter.
(4) More than one communications
card of different types is
mounted.
Check whether any other type of the communications card (e.g.,
DeviceNet) is mounted.
Mount only one communications card on the inverter.
(5) The B-port has an option card
other than the relay output
interface card.
Check the option card connected to the B-port.
Do not connect any option card other than the relay output interface
card to the B-port when the SX-bus communications card is mounted
on the inverter.
If the inverter does not display o codes (option functions) even if the communications card is mounted,
check whether the connector on the communications card is properly engaged with that on the inverter
although
does not appear.
Option error (SX-bus communications error) (
)
Problem An error detected by the communications card.
Possible Causes
What to Check and Suggested Measures
(1) Mismatch of SX-bus station
address.
Check whether the station address specified on the SX-bus
communications card matches with the one specified at the MICREX-SX.
Configure the station address of the SX-bus communications card
properly using the station address switches (RSW1 and RSW2).
(2) SX-bus data area double
assigned.
Check whether the SX-bus station address is double assigned by any
other device on the same SX bus.
Review the SX-bus station address settings.
For details, refer to the MICREX-SX user's manual.
(3) Incorrect wiring of SX-bus
cable.
Check the cable specifications and wiring.
Replace the cable if broken and correct the wiring.
(4) Strong electrical noise.
Check whether appropriate noise control measures have been
implemented (e.g. correct grounding and routing of signal wires,
communications cables, and main circuit wires).
Implement noise control measures.
(5) Improper terminating connector. Check whether the terminating connector is mounted as specified.
Mount the terminating connector as specified.
(6) Error that has occurred in any
other option card.
Find out the option card causing an error.
Refer to the instruction manual of the option card that has caused
.
Summary of Contents for OPC-G1-SX.
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