
MITSUBISHI ELECTRIC QJ71LP21S-25 Used
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The Mitsubishi Electric QJ71LP21S-25 is a MELSEC-Q Series MELSECNET/H communication module designed to operate as a master or local station within Q Series PLC networks. It enables reliable, high-availability data exchange between controllers, remote I/O, and drives across complex factory automation and process environments, helping OEMs and end users standardize on a proven industrial network for scalable control architectures.
Featuring an external power supply, the module supports stable operation in demanding installations and maintains clear separation between control and communications power. Operating as a master or local station on MELSECNET/H, it delivers deterministic, cyclic data transfer for controller-to-controller links and remote I/O communications. Its compact 27.4 mm width conserves rack space in MELSEC-Q base units, while broad compliance and marine approvals facilitate deployment in industrial plants and shipboard applications.
Whether modernizing an installed Q Series line or engineering a new automation platform, this module shortens commissioning and simplifies lifecycle maintenance within a standardized MELSECNET/H topology, and it is backed by a 1-year warranty for added peace of mind.
- Brand: Mitsubishi Electric
- Series: MELSEC-Q Series
- Model: QJ71LP21S-25
- Network interface: MELSECNET/H
- Station type: Master/Local Station
- Power supply: External
- Certifications: CE, UL/cUL, UKCA
- Marine approvals: ABS, BV, DNV GL, LR, NK, RINA