6.5 SX Bus Interface Card
6-87
Chap. 6
CONTROL OPTIONS
6.5.6 Protective operation
6.5.6.1 Light and heavy alarms
The SX bus option can encounter light and heavy alarms depending on the failure level.
Upon occurrence of this failure, the inverter outputs
er4
"network error" and the motor coasts to stop.
Table 6.5.5
Item Light alarm Heavy alarm 1 Heavy alarm 2
Card LED States
ERR (ON)
RUN (ON)
ERR (ON)
RUN (ON)
Undefined
Cause
Communication data error
due to noises on the
communication line, etc.
All masters go down
Disconnection
detected
SX bus power down
Option hardware failure
Option installation failure
Reset method *1
Resolve the cause (or wait for communication recovery)
and give a reset command (keypad, RST, or remote
reset).
Resolve the alarm cause and
power cycle the inverter.
Alarm is only detected while operation commands are
given via the SX bus.
Failure state control
Alarms can be controlled
with the function codes o30
and o31.
An
er4
alarm immediately occurs upon heavy alarm.
Communication error
code displayed on
keypad *2
1 2 3
Alarm
sub code *3
1 (hex) 2 (hex) 4 (hex)
*1 "Give a reset command" means supplying a reset input to the inverter in one of the following methods.
* Keypad 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-SX.
*2 You can check the communication error code for light and heavy alarms on the communication state screen of
the maintenance information on the
keypad. 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. Note that this error code displays the first
cause for
er4
. Since every heavy alarm 1 is preceded with a light alarm, this code shows the light alarm even
for a heavy alarm 1 when o30=0.
Figure 6.5.10
ＮＲＫ = ×××××
ＮＲＲ = ××××× ××
ＮＲＯ = ××××× ××
ＮＲＬ = ××××× ××
∧∨ÆＰＡＧＥ ＳＨＩＦＴ ４
-: No communication error
1: Light alarm
2: Heavy alarm 1
3: Heavy alarm 2
To Next Page
Loading...
