Example Of Safety System Configuration - Mitsubishi Electric 700 Series Instruction Manual

3. Example of safety system configuration

START
Emergency
stop button
COM0
+24V X0 X1
Internal
DC24V
Safety
Circuit
24G
MITSUBISHI ELECTRIC
MELSEC Safety relay module
QS90SR2SN-Q
Fig.3 Safety system example – STOP synchronous with emergency stop button and fault
For safety stop, configure the wiring as shown in Fig.3 above.
NOTE
•
XS0 should be connected to RUN terminal and XS1 should be connected to SE, because polarity of
XS0 is positive, XS1 is negative.
•
Pr.190 (RUN terminal function selection) must be set to "81". This setting makes the RUN output to
turn off in case of failure.
•
The above wiring is configured to prevent restart in case of a fault.
•
In the event of reset of 'safe-condition' the motor rotation will not occur until STF is pressed. (for
normal 'non-safety' STF/STOP function, please refer to your drive's User Manual)
•
After the power-up of the system, to reset the safety stop mode, press the START switch, and also
press the STF switch, then start the motor rotation.
 To prevent restart in case of recovering from input power loss of drive, 3-wired connection for
STF/STOP control is recommended. In case of 2-wire connection and using latching type switch to short
between STF and PC for starting, ensure the compliance with safety requirement for the restarting when
the drive recover from input power loss.
STF
STOP
COM1
XS0 XS1 Z00 Z10 Z20
K1
K2
Z01 Z11 Z21
detection through RUN output.
RUN (SAFE2)
SE
STF
STOP
S2
S1
+24V
SC
PC
CAUTION
5
CPU
Gate Gate
Driver Driver
G G
FR-D700-SC
R/L1 S/L2 T/L3
IGBTs
U V W
M