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Example 2, Attention – MITSUBISHI ELECTRIC FR-D700 User Manual

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Example 2
























Fig.5 Safety system example 2 – STOP synchronous with EM and fault detection through RUN output.


For safety stop, configure the wiring as shown in Fig.4 above.
Note: the above wiring is configured to prevent restart in case of a fault.

XS0 should be connected to RUN terminal and XS1 should be connected to SE, because polarity of XS0 is
positive, XS1 is negative.

The parameter No.190 must be set to ‘199’. This setting makes the RUN output to turn off 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 Fig.4, wired example2, 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)

ATTENTION

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.

S2

S1

SC

FR-D700

START

+24V

EM

QS90SR2SN-Q

K1

CPU

X0

X1

COM0

COM1

24G

Safety

Logic

Circuit

XS0

XS1

Z10

Z00

Z20

Z11

Z01

Z21

K2

DC24V

RUN

R S T

U V W

MITSUBISHI MELSEC Safety relay unit

Gate

Driver

Gate

Driver

IGBTs

IM

SE

STF

STOP

STF

STOP

SINK

SD