Diagnostic
Safety stop function protection mechanisms：
Safety stop terminal (S1-S2-SC)contact short wire, Disable safety stop mode, Motor
running；
1. When S1-SC open and S2-SC short, at this time, protection signal will cut off driver
unit enable pin, IGBT none PWM signal, motor free run;
2. Otherwise, When S1-SC short and S2-SC open, at this time, protection signal will cut
off driver unit input power, IGBT none PWM signal, motor free run;
3. Safety stop terminal (S1-S2-SC)contact short wire, the motor running ,When photo-
coupler secondary side of the power supply V1 & V2 occurs suddenly OV or UV,
CPU detected abnormal voltage state , sent “LO” signal to NAND logic gate
cutting off gate drive inable signals, motor free run.
Self diagnostic test
11-301 does the self-diagnostic test on the power-ON.
If 11-301 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, 11-301 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 11-301 (see the user manual how to clear the
error record).
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