Safety solutions
The servo
Basic configuration
Servo amplifier MELSERVO-J4 series
MELSEC iQ-R series can be linked with AC servo MELSERVO-J4 via CC-Link IE Field Network. It is possible to receive safety signal data of the safety CPU via the CC-Link IE Field Network connected to the RD77GF by combining the safety CPU with the simple motion module RD77GF. * 1 Therefore, there is no need to wire hard wires from the safety remote I / O to the MR-D30 functional safety unit for each axis.
Motion controller Q17nDSCPU
The Q17nDSCPU has a safety signal monitor that monitors the status of dual input / output signals, a shutoff function (STO, SS1), stop monitor (SOS, SS2), speed monitor (SLS), safe speed monitor (SSM), and safety brake. Each control (SBC) function is equipped as standard.
These functional safety operating conditions can be freely programmed as a ladder circuit for the programmable controller CPU and motion CPU.
Functional safety unit MR-D30
By directly wiring the safety input signal to the MR-D30 functional safety unit, SIL3, Category 4 PLe safety functions can be realized.
(Improvement of safety level by wiring to functional safety unit)
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| Features of IEC / EN 61800-5-2: 2007 | Safety function / safety level by wiring to MR-D30 |
|---|---|
| STO (Safe torque off) | SIL 3, Category 4 PL e |
| SS1 (Safe stop 1) | |
| SBC (Safe brake control) | |
| SLS (Safely-limited speed) | SIL 2, category 3 PL d |
| SSM (Safe speed monitor) |
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