Overview
Manuals
Cable Specifications
Signal Assignment
Installation Guidance
Features:
- Mitsubishi Electric MELSERVO STO cable
- 3 m cable length
- Standard cable outside diameter: 5.7 mm
- CN8 connection for an external safety device
- Dual STO inputs with safety feedback outputs
The
Mitsubishi Electric MR-D05UDL3M-B is a 3 m STO cable for connecting an external safety device to the CN8 connector of a compatible MELSERVO drive unit. It carries the two-channel Safe Torque Off circuit and its associated feedback signals in the arrangement documented by Mitsubishi Electric.
The cable provides STOCOM, STO1, STO2, TOFB1, TOFB2 and TOFCOM conductors together with the specified shield connection. Before commissioning, verify the drive model, CN8 pin assignment, connector retention, grounding and complete safety-circuit design against the applicable Mitsubishi Electric manual.
The MR-D05UDL3M-B Mitsubishi Electric STO cable remains in continued production according to the manufacturer compatibility documentation and may be supplied and supported by Moore Automated.
Mitsubishi Electric MR-D05UDL3M-B STO Cable Manuals(Datasheets), Link
Important Notice: Other accessories, manuals, cables, connectors, software and related items are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Cable Specifications:
- Model: MR-D05UDL3M-B
- Mitsubishi Electric material number: 227986
- Product type: STO cable
- Cable length: 3 m
- Standard cable outside diameter: 5.7 mm
- Connector set: 2069250-1
MR-D05UDL3M-B is intended for the CN8 safety interface of compatible Mitsubishi Electric MELSERVO drive units. Use the complete drive manual to verify that the selected drive accepts this cable and connector configuration.
Signal Assignment:
- STOCOM: safety-input common
- STO1: Safe Torque Off input channel 1
- STO2: Safe Torque Off input channel 2
- TOFB1: safety feedback output 1
- TOFB2: safety feedback output 2
- TOFCOM: feedback-output common
The official wiring diagram also specifies the cable shield and plate connection. Maintain the documented conductor identification, channel separation and common-terminal arrangement when connecting the external safety device.
Installation Guidance:
- Confirm the drive supports the CN8 STO interface
- Verify connector orientation and positive retention
- Check STO and feedback pin assignments before wiring
- Terminate the cable shield as documented
- Validate the complete safety function before operation
Disconnect power and follow the applicable Mitsubishi Electric servo-system safety procedure before installation. If the STO function is not used, install only the short-circuit connector specified for the drive; do not substitute unverified wiring or connectors.
