ER-M-SD

The Okuma ER-M-SD stainless steel absolute encoder delivers precision position feedback and rugged durability in industrial environments. As part of the Absolute Encoders series by Okuma, the ER-M-SD integrates critical features such as IP65 ingress protection against dust and water, ensuring reliable operation under harsh conditions. The encoder’s 120 mm x 80 mm x 40 mm footprint and 2.5 kg mass facilitate straightforward mounting and handling in confined spaces. Its panel mount design and screw terminal connection simplify installation, while the stainless steel housing provides resistance to corrosion and mechanical stress. These combined capabilities make the ER-M-SD a robust solution for demanding automation applications.

The ER-M-SD incorporates a comprehensive set of technical specifications designed for industrial performance. It accepts a 100-240 VAC input voltage through a secure Screw Terminal connection type and draws a 1.5 A current consumption at full load. Constructed from stainless steel, the encoder maintains structural integrity across an operating temperature range of -20°C to 80°C and operating humidity from 0-95% RH (non-condensing). The device withstands an operating pressure of up to 10 bar, enabling use in pressurized or humid environments. With an overall Ingress Protection rating of IP65, the ER-M-SD is dust-tight and protected against water jets. Mounting Type is Panel Mount, and the compact dimensions of 120 mm x 80 mm x 40 mm ensure compatibility with standard industrial panels.

Operational features emphasize high reliability and consistent performance under variable environmental conditions. The enclosed design shields internal optics from contaminants, while the stainless steel housing resists impacts and corrosion. The precision encoder mechanism delivers stable feedback signals that support closed-loop motion control, maintaining accuracy in machine tool spindles or robotic joints. Panel mount configuration combined with screw terminal connections reduces wiring errors and accelerates maintenance procedures. The ER-M-SD’s ability to operate across a broad temperature range of -20°C to 80°C, extended humidity tolerance up to 95% RH, and pressure resilience up to 10 bar ensure uninterrupted operation in factories, processing plants, and outdoor installations.

System integration is streamlined via standard screw terminal interfaces and panel mount form factor, allowing seamless installation into existing control cabinets. The ER-M-SD interfaces easily with PLCs, CNC controllers, and industrial Ethernet gateways, enabling high-resolution position feedback in real time. This encoder is particularly well suited to applications in machine tools, packaging lines, conveyor systems, and robotic assembly where precise motion coordination and environmental robustness are essential. The combination of Okuma ER-M-SD reliability, Absolute Encoders series pedigree, and stainless steel construction positions this device as an optimal component for modern industrial automation systems.