Fuji Electric FRENIC-VG Series, Руководство пользователя

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6.6 High-Speed Serial Communication-Capable Terminal Block
6-139
Chap. 6
CO
NTR
O
L O
P
TIONS
6.6.8.2 Processing for light alarms
In the multiplex system, if the inverter detects a light alarm, it does not inform other stations of the
occurrence of a light alarm. It just displays the light alarm on itself.
To use the light alarm function, configure H106 to H108 so that the settings are the same on the master
and slave units. To cancel the light alarm state, check that the alarm cause is removed and use a reset
command for any one of the master and slave units. This reset operation cancels the light alarm states on
all stations.
6.6.8.3 Inter-inverter link error (
erb
)
If the optical cable connecting the inverters get broken or comes off from the connector during operation,
the inverters are forced to enter the alarm state with the inter-inverter link error
erb
, and the motors will
coast to stop.
erb
can occur if a related function code is not set correctly.
While the alarm cause is not resolved, giving the reset command (from the keypad, terminal block, or
communication system) does not cancel the alarm state. Be sure to resolve the cause before resetting the
system.
Troubleshooting
erb
erb
can be caused by the following reasons:
(1) The optical cable is not connected or inserted to the connector incompletely.
(2) The optical cable is bent with curvature of 35 mm or less.
(3) The colors of the optical cable plugs and the connectors of the print board (light gray and dark gray)
do not match.
(4) Optical cable connection does not form a loop. Be sure that signals from the master are looped back.
(5) Multi-system station address o50 settings are duplicated.
(6) The operation command (FWD/REV) was input before the optical link communication is
established.
(7) Strong light (e.g., flashlight) is applied to the optical fiber.
If the alarm
erb cannot be cancelled after checking and removing these causes, the optical cable and/or
optical link option print board may be faulty. Contact your local sales office or service center.
6.6.8.4 Operation procedure error ( er6 )
The operation procedure error (
er6
) can occur in the following cases:
(1) The multiplex system station address o50 value is greater than the number of slave o34 value.
(2) The motor control method is set to other than vector control.
(3) Function code o33 (Multiplex system)
≥
3
(4) Function code o33 data is switched between "1" (Multiwinding motor system) and "2" (Multiplex
system 1, Direct parallel connection). Turning the power ON again can only reset the inverter.