Protection Function List - Hitachi SJ-PB(T) Instruction Manual

6.1 Trip display
When the inverter is in a tripped state, the inverter displays an error code (See table below). The trip history
monitor (d081 to d086) also displays the same error code as the inverter.

6.2 Protection function list

The table below describes an error code for protecting the inverter and the motor.
Error Display in the table below, X is 6 (Error for option slot 1) or 7 (Error for option slot 2).
No. Function
1 Profibus communication
error
2 Inverter communication
error
With regard to the other errors except table above, refer to Inverter instruction manual chapter 4 Explanation
of function.
6.3 Countermeasure for a trip state
The table below only corresponds to additional trip codes, with regard to the other countermeasures refer to
Inverter instruction manual chapter 4 Explanation of function.
Trip Name of trip
code
EX0 Profibus
Communication
error
EX9 Inverter
communication
error
6.4 LED display and Countermeasure
Following states are indicated by three LED's.
LED
Green
Fieldbus
On/Off
Red
Flash Red 1Hz
Fieldbus
Flash Red 2Hz
diagnosis
Flash Red 4Hz
Green
Flash Red 1Hz
Serial channel
Red
status
CHAPTER 6
Trip code
Error Action
Display
EX0 This error is displayed, when disconnection occurred, while
the inverter is operating with Profibus.
EX9 This error is displayed, when communication timeout occurs
between the inverter and the option board.
Cause
Defective connector for
signal cable causes
connection fail.
Terminating resistor is
not connected.
Wiring distance does not
much with baudrate.
Option board is
removed.
Color
Fieldbus is on-line.
Fieldbus is off-line.
Configuration error.
User configuration data error.
VPC3+ initialization failed.
Serial channel status OK.
Serial communication error.
No serial communication.
(Or during initializing inverter
data. In
initializing, LED color returns to
green )
COUNTERMEASURE FOR ABNORMALY
Inverter's running condition of trip detected
Conformation
Check the area of
connection.
Check the Connection
Check the
wiring distance
Check as mentioned left
Function
Confirm connection fails of connector.
Confirm setting data and send correct data.
Confirm system setting and adjust adequate.
Need to change the SJ-PB.
Confirm cable length and connection fails of
connector. And then adjust adequate.
Confirm cable length and connection fails of
connector. And then adjust adequate.
this case, after
21
Countermeasure
Improve the connection and then
reset the power supply.
Connect the terminating Resistor
and then reset the power supply
Adjust the setting to the matching
Baudrate or adjust wiring distance
Mount the option board again and
then secure it with screws.
Countermeasure
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