Cautions - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

Cautions

The following basic safety notes must be read carefully and fully in order to prevent injury to persons or damage to property.
Only qualified personnel are authorized to install, start-up, repair or service the machines in which these components are
installed.
They must be familiar with all applicable local safety regulations and laws in which machines with these components are
installed, particularly the standards and guidelines mentioned in this Instruction Manual and the requirements mentioned in
ISO/EN ISO 13849-1, IEC 61508, IEC/EN 61800-5-2, and IEC/EN 60204-1.
The staff responsible for this work must be given express permission from the company to perform start-up, programming,
configuration, and maintenance of the machine in accordance with the safety standards.
WARNING
• Improper installation of the safety related components or systems may cause improper operation in which safety is not assured, and may result in severe
injuries or even death.
Protective Measures
• As described in IEC/EN 61800-5-2, the Safe Torque Off (STO) function only prevents the MR-J4 series servo amplifier from
supplying energy to the servo motor. Therefore, if an external force acts upon the drive axis, additional safety measures,
such as brakes or counter-weights must be used.
Residual risk
Machine manufacturers are responsible for all risk evaluations and all associated residual risks. Below are residual risks
associated with the STO/EMG function. Mitsubishi Electric is not liable for any damages or injuries caused by the residual
risks.
• The SS1 function only guarantees the delay time before STO/EMG is engaged. Proper setting of this delay time is the full
responsibility of the company and/or individuals responsible for installation and commissioning of the safety related system.
The system, as a whole, must pass safety standards certification.
• When the SS1 delay time is shorter than the required servo motor deceleration time, if the forced stop function is
malfunctioning, or if STO/EMG is engaged while the servo motor is still rotating; the servo motor will stop with the dynamic
brake or freewheeling.
• For proper installation, wiring, and adjustment, thoroughly read the manual of each individual safety related component.
• Be sure that all safety related switches, relays, sensors, etc., meet the required safety standards. The Mitsubishi Electric
safety related components mentioned in this manual are certified by Certification Body as meeting the requirements of ISO/
EN ISO 13849-1 Category 3, PL d and IEC 61508 SIL 2.
• Safety is not assured until safety-related components of the system are completely installed or adjusted.
• When replacing an MR-J4 series servo amplifier or MR-J3-D05, confirm that the new equipment is exactly the same as
those being replaced. Once installed, be sure to verify the performance of the functions before commissioning the system.
• Perform all risk assessments and safety level certification to the machine or the system as a whole. It is recommended that
a Certification Body final safety certification of the system be used.
• To prevent accumulation of multiple malfunctions, perform a malfunction check at regular intervals as deemed necessary
by the applicable safety standard. Regardless of the system safety level, malfunction checks should be performed at least
once per year.
• If the upper and lower power modules in the servo amplifier are shorted and damaged simultaneously, the servo motor may
make a half revolution at a maximum.
Appendix 5 MR-J3-D05 Safety logic unit
A
APPX
587