Self-Diagnostics; C.12 Self-Diagnostics - YASKAWA D1000 Series Instruction Manual

C.12 Self-Diagnostics

The converter has a built-in self-diagnosing function of the serial communication interface circuits. To perform the
self-diagnosis function, use the following procedure.
DANGER! Electrical Shock Hazard. Do not connect or disconnect wiring while the power is on. Failure to comply will result in death or
serious injury. Before servicing, disconnect all power to the equipment. The internal capacitor remains charged even after the power
supply is turned off. The charge indicator LED will extinguish when the DC bus voltage is below 50 Vdc. To prevent electric shock, wait
at least one minute after all indicators are OFF and measure the DC bus voltage level to confirm safe level.
1.
Turn on the power to the converter.
2.
Note the present terminal S6 function selection setting (H1-06) and set it for the communications test mode
(H1-06 = 67).
3.
Turn off the power to the converter.
4.
With the power off, wire the converter as shown in
S6 and SC.
Figure C.9
5.
Set jumper S3 to source mode (internal power supply).
6.
Turn the power to the converter back on.
7.
During normal operation, the converter will display "Pass" to indicate that the communications test mode is
operating normally.
When a fault occurs, the converter will display "CE" on the keypad display.
8.
Turn off the power supply.
9.
Remove the wire jumpers from terminal R+, R-, S+, S-, and S6-SC. Reset jumper S3 to its original position and
set terminal S6 to its original function.
10.
Return to normal operation.
YASKAWA ELECTRIC TOEP C710656 07A YASKAWA Power Regenerative Converter - D1000 Instruction Manual
Figure C.9 Terminal Connections for Communication Self-Diagnostics
Figure C.9, connecting terminals R+ and S+, R- and S-, and
C.12 Self-Diagnostics
YAI
225
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