4.10 Continuity Test
Program 60 checks if the 24 V current supply supplies current with the
output drivers turned off.
Then program 60 checks all existing output elements, the output driver
and the installation for continuity.
–
Set the " Program " switch to " 60 ".
–
Press the " STOP " key.
The program is activated.
Display
Explanation
V?
Short circuit in the installation or an output driver
is defective.
S17
Interruption in the output element S17, in its
installation or driver.
Continue the check at the next element
by pressing the "
Σ
" key.
4.11 Testing the Front Panel Elements
Program P61 tests the front panel elements.
–
Set the "Program" switch to "61".
–
Press the "STOP" key.
The program is activated.
–
Operate the selector switch on the front panel.
The current setting value of the operated selector switch appears
in the display.
Upon operation of a key on the front panel (Exception: STOP key)
the numbers associated with this switch (1, 2, 4 or 8) appear.
–
The LEDs on the front panel are selected via code numbers. The
short designations of the circuit diagram (1 - 8) serve as code
numbers.
The LEDs are switched on with the "
Σ
" key.
Switch
Function
Designation
b417
Function switch
b401
- none -
b402
- none -
b413/412
Program switch
PROGRAM
b416
Stop (key 13)
STOP
16
Summary of Contents for class 743-221
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