Test And Checking Failure - Mitsubishi Electric 700 Series Instruction Manual

4. Test and checking failure

systematic

To avoid
check the correct function of the monitor signal. This test shall be carried out at system installation, any software
changes, parameterization changes, and/or at least once per year.
I/O status and failure
FR-D700 safety related I/O status obeys the following truth table.
Input signal
Input power
S1-SC
OFF -
Short
ON Open
Short
Open
*1 At an internal safety circuit fault, E.SAF or E.CPU is displayed on the operation panel. SA is displayed on the operation panel
while S1 and S2 signals are both open and the safety function operates (without internal safety circuit fault).
*2 To use RUN terminal for monitor output of failure detection, Pr. 190 should be set "81" (Safety monitor 2).
*3 To use A, C terminal for monitor output of failure detection, Pr. 192 should be set "81" (Safety monitor 2).
In case of diagnostic or functionality test, check the I/O state whether it is same or not as Table.5.
Diagnostic
If the failure detected, FR-D700 output alarm signal and indicate 'E.SAF' at the display.
In case of FR-D700 output the alarm, please take following action.
(1) Check the S1-SC and S2-SC input signal logic is the same. If these are different logic, correct the input
signal and reset the FR-D700.
(2) Disconnect the wire from S1, S2, SC terminal, then reset or power-off and on, If the 'SA' letter is
flashed up at display, there is failure in system except FR-D700. But, still 'E.SAF' is displayed and
alarm output, there is malfunction on FR-D700.
Self diagnostic test
FR-D700 does the self-diagnostic test on the power-ON.
If FR-D700 output alarm at power-ON, please take the action described in 'Diagnostic' at above.
Test procedure for functionality
As depicted 'ATTENTION' in above, the test for the functionality is important.
Please do the test following procedure.
(1) Please make each state of S1-SC and S2-SC depicted at Table.5.
(2) If there is any different state from Table.5, FR-D700 has some malfunction.
(3) If there is no different state from Table.5, check the systematic performance, such as, press the
Emergency switch, press the start/restart button at the failure detected (RUN-SE opened), and so on.
(4) Finally clear the error record of the FR-D700 (see the user manual how to clear the error record).
faults, a test even for faulty demands of the safety function has to be performed in order to
Table.5 Truth table of Safety related signals
Internal safety
S2-SC circuit
*1
- -
No failure
Short
Failure
No failure
Open
Failure
Open N/A
Short N/A
CAUTION
Output signal
RUN-SE or A-C
SO-SC (SAFE)
(SAFE2)
OFF(Open) OFF(Open)
OFF(Open) ON(Close)
OFF(Open) OFF(Open)
ON(Close) ON(Close)
OFF(Open) OFF(Open)
OFF(Open) OFF(Open)
OFF(Open) OFF(Open)
N/A
" " denotes a condition where circuit fault does not apply.
9
Inverter operation state
*2 *3
Output shutoff (Safe state)
Drive enable
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)
Output shutoff (Safe state)