Example Of Safety System Configuration - Mitsubishi Electric FR-D700 Instruction Manual

3. Example of safety system configuration

Example 1
START
EM
+24V X0 COM0 X1
Safety
DC24V
Logic
Circuit
24G
MITSUBISHI MELSEC Safety relay unit
QS90SR2SN-Q
Fig.3 Safety system example 1 – STOP asynchronous with EM and fault detection through A-C output.
For safety stop, configure the wiring as shown in Fig.3 above.
Note: the above wiring is configured to prevent restart in case of a fault.
The parameter No.192 must be set to '199'. This setting makes the A-C output to open in case of failure.
After the power-up, to reset the safety stop mode, press the START switch, and also press the STF switch,
then start the motor rotation.
In the above configuration, after reset of EM switch, 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
COM1 XS0 XS1 Z00 Z10 Z20
K1
K2
Z01 Z11 Z21
A
B
RY
C
STF
STOP
PC
SOURCE
CPU
S1
S2
SC
ATTENTION
5
R S T
IGBTs
Gate Gate
Driver Driver
U V W
FR-D700
IM