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

3. Example of safety system configuration

Example 1
START
Emergency
stop button
+24V X0 COM0 X1 COM1
Internal
DC24V
Safety
Circuit
24G
MITSUBISHI ELECTRIC
MELSEC Safety relay module
QS90SR2SN-Q
Fig.3 Safety system example 1 – STOP asynchronous with emergency stop button and fault
NOTE
•
Pr. 192 (A, B, C terminal function selection) must be set to "81". This setting makes the A-C output to
open in case of failure.
•
The above wiring is configured to prevent restart in case of a fault.
•
When starting up the system's operation, press the START switch to reset the safety stop function
first, then turn ON the STF switch to run the motor.
•
In the above configuration, after reset of emergency stop button, drive will be in safe-state until
START switch is pressed.
 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 SD/PC for starting, ensure the compliance with safety requirement for the restarting
when the drive recover from input power loss.
STF
STOP
XS0 XS1 Z00 Z10 Z20
K1
K2
Z01 Z11 Z21
* If the control logic is SINK logic, the common
terminal is terminal SD.
detection through A-C output.
+24V
A(SAFE2)
B
RY
C
STF
STOP
+24V
S1
+24V
S2
SC
PC*
CAUTION
5
CPU
Gate Gate
Driver Driver
G G
FR-D700
R/L1 S/L2 T/L3
IGBTs
U V W
M