Fuji Electric FRENIC-VG Series - Protective Operation; Light and Heavy Alarms

6-62
6.4.6 Protective operation
6.4.6.1 Light and heavy alarms
Failures of the he T-Link interface card are classified into light and heavy alarms depending on the
severity level.
Upon occurrence of this failure, the inverter outputs
er4 "network error" and the motor coasts to stop.
Table 6.4.5
Item Light alarm Heavy alarm
Cause Noise on communication line
Disconnection of
communication line
MICREX (PLC)
power off
T-Link option hardware
failure (damage, failure)
Duplicated address (setting
error of RSW1 and RSW 2)
Reset method
Resolve the cause (or wait for communication recovery) and
give a reset command (touch panel, RST, or remote reset).
Remove the hardware failure
and reset the power supply.
o29=0
Alarms can be controlled with the
function codes o30 and o31.
Momentary er4 alarm
LK-D: ON: Continue operation for light and heavy alarms.
o29=1
LK-D: OFF: Follow the function codes
o30 and o31.
LK-D: OFF : Momentary
er4 alarm
LK-D: ON: Continue operation for light and heavy alarms.
Failure
state
control
o29=2
LK-D: OFF: Follow the function codes o30 and o31 for light and heavy alarms.
Note: "Give a reset command" means supplying a reset input to the inverter in one of the following methods.
* Touch panel key input
* Assign the failure reset RST with the X function selection and digitally input the command.
* Input the reset command via the communication line.
For a heavy alarm, the CPU may also require reset depending on the CPU state of MICREX.
You can check the communication error code for light and heavy alarms on the communication state screen of
the maintenance information on the touch panel. To access this screen, press the
key to return to the menu
screen, and move the arrow on the left edge of the screen to "5. Maintenance" using the
/ key, then press
the key. Press the key three times to show the screen below.
Figure 6.4.4
*1 When o30=0, a heavy alarm may be displayed as a light alarm depending on the timing.
This does not occur when o30=1 or 2, or o31=0.10 or higher.
ＮＲＫ＝×××××
ＮＲＲ＝××××× ××
ＮＲＯ＝××××× ××
ＮＲＬ＝××××× ××
∧∨ÆＰＡＧＥ ＳＨＩＦＴ ４
-: No communication error
1: Light alarm *1
2: Heavy alarm
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