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1. General description
Features
Mitsubishi FR-D700 safety stop function prevents a drive from supplying rotational energy to motors.
Dual safety channels ‘S1’ and ‘S2’ cut off the gate-drive power for IGBT to turn off.
Safety relay module
+24V
+24V
S1
SC
CPU
S2
Gate
Driver
Gate
Driver
IGBTs
Input power
M
FR-D700
Internal
Safety
Circuit
GG
Fig.1 FR-D700 safety stop function diagram
WARNING
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).
Directives
Mitsubishi FR-D700 safety stop function meets the following directives and categories.
ISO13849-1:2008 Category 3/PLd (applies to the FR-D700 manufactured in January 2012 or later)
IEC62061:2005 / IEC61800-5-2:2007 / IEC61508 SIL2
IEC60204-1:2006 / IEC61800-5-2:2007 Stop category 0
WARNING
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 directive.