General Description - Mitsubishi Electric 700 Series Instruction Manual

1. General description

Features
Mitsubishi Electric FR-D700 safety stop function prevents a drive from supplying rotational energy to
motors. (In this Instruction Manual, the STO (safe torque off) function specified in IEC 61800-5-2 is
referred to as the safety stop function.)
Dual safety channels 'S1' and 'S2' cut off the gate-drive power for IGBT to turn off.
Internal
Safety
Circuit
Safety relay module
 The safety stop function doesn't isolate electrically between drive and motor. To avoid an electric shock
hazard, disconnect power to the drive and verify that the voltage is zero before performing any work on
the motor (refer to your drive's User Manual for discharging time).
Standards
Mitsubishi Electric FR-D700 safety stop function meets the following standards and categories.
ISO13849-1:2015 Category 3/PLd
IEC62061:2021 / IEC61800-5-2:2016 / IEC61508:2010 SIL2
IEC61800-5-2:2016 Stop category 0
 The misuse of safety function leads to personal injury or death, property damage, or economic loss. To
ensure that the system complies fully with requirement of safety, make a system-level risk assessment.
Mitsubishi Electric Co. cannot assume responsibility for any system to comply with safety standards.
+24V
A(SAFE2)
B
RY
C
S2
+24V
S1
SC CPU
Fig.1 FR-D700 safety stop function diagram
WARNING
WARNING
1
FR-D700
+24V
G G
Gate Gate
Driver Driver
Input power
IGBTs