Schneider Electric ROM-271 SY/MAX Relay Output Module

The Schneider Electric Square D ROM-271 SY/MAX Relay Output Module is a 16‑point isolated relay output module (Class 8030 ROM‑271) for the SY/MAX control system, delivering sixteen relay outputs with a single common and isolated contact sets for safe interfacing to external loads. Each output can switch up to 240 VAC or 120 VDC at up to 2 A, with a maximum pilot duty of 2 A at 5–125 VAC, 1 A at 126–240 VAC, or 2 A at 5–30 VDC (0.4 A at 31–60 VDC and 0.1 A at 61–120 VDC for higher DC ranges), and it features a red LED that illuminates when the channel is energized; turn‑on and turn‑off times are each 10 ms. The module provides 2,500 V RMS isolation between the processor side and each output, improving safety and noise immunity in mixed‑voltage environments. It supports ambient temperatures from 0 to 60 C and relative humidity from 5 to 95% non‑condensing, and it uses a detachable terminal block (Square D part number 30617‑002‑50) for straightforward wiring. Power consumption on the SY/MAX backplane is rated at 900 mA per module at 100% duty cycle (with other documentation noting about 750 mA per module at 75% duty), making it suitable for compact, high‑density relay output needs in legacy Square D SY/MAX installations for applications such as motors, valves, alarms, and indicators bridged to the SY/MAX controller.