4. Troubleshooting
130
Table 4.1 When the system does not operate correctly (part 2)
Symptom
Checks
Action
An I/O bus error has been
detected.
Is the I/O bus cable connected
securely?
Insert the cable connector all the
way in, and lock in place.
Is the termination connector
connected to the last stage
terminal block unit?
Connect the termination connector.
Are the terminal blocks and
communication modules mounted
securely on the communication
base unit?
Tighten the screws securely.
Are the PI/O module modul
numbers set correctly?
Set the numbers correctly.
Trouble is detected in the PI/O
module external power supply.
Is the external power supply wired
correctly to the terminal block unit
terminal block?
Connect correctly.
In the case of the relay
connection unit, is power supplied
correctly to the external relay
unit?
Supply power to the relay unit.
Are the external line terminal
block and connector fixed to the
main unit with screws?
Fix the external wire and terminal
block in place with screws.
Is the external power supply at the
prescribed voltage?
Supply the prescribed voltage.
The analog input data do not
agree with the real values.
Is the external line terminal block
main unit fixed in place with
screws?
Fix external line terminal block with
screws
Is the input open?
Connect the prescribed signal.
Is the input signal polarity
reversed?
Connect the signal polarity
correctly.
Is an analog signal from the same
power supply connected to an
uninsulated PI/O module?
Use an insulated PI/O module for
analog signals from different power
supply systems.
In the case of current input, is an
I/V conversion board mounted on
the terminal block?
Set the I/V conversion board in
place, then apply the current input.
Is the input range registered
correctly?
Register the range being used.
A read-back error is detected
in the analog output.
Is the external line terminal block
main unit fixed in place with
screws?
Fix the external line terminal block
in place with screws.
Is the output open?
Connect a load.
Is the polarity of the wiring to the
load reversed?
Check the polarity, and connect
correctly.
Is the external load resistance
within the specifications?
Apply a load of 0 to 750
when
electricity is flowing.
Is the distributor alarm
indicator (SDA01) lit?
Has the external power supply
voltage dropped?
Supply the rated power.
Is there excess current in the
output (Goes off by turning OFF
sensor power switch).
Check the wiring and sensor where
the excess current occurs.
Содержание TOSDIC-CIE DS
Страница 1: ...Toshiba Integrated Control System Intelligent PI O Instruction Manual 6F8C0779 ...
Страница 10: ...Introduction viii ...
Страница 14: ...Contents xii ...
Страница 20: ...1 System Configuration 6 ...
Страница 40: ...2 Installation and Wiring 26 ...
Страница 53: ...3 System Configuration Unit and Module 39 UTBA1 front panel ...
Страница 56: ...3 System Configuration Unit and Module 42 UTBA2 front panel ...
Страница 59: ...3 System Configuration Unit and Module 45 UTBA3 front panel ...
Страница 68: ...3 System Configuration Unit and Module 54 UTBD1 front panel ...
Страница 71: ...3 System Configuration Unit and Module 57 UTRC1 front panel ...
Страница 142: ......
Страница 151: ...Apendix 2 External Dimentions 137 Terminal Block Unit Appended Figure 2 2 Terminal block unit ...
Страница 156: ......
Страница 158: ...TOSHIBA CORPRATION 72 34 Horikawacho Saiwai ku Kawasaki shi Kanagawa 212 8585 JAPAN ...