Input specifications

Communication input: 85-264 VAC, 47-63 Hz (nominal 120/240VAC)

DC input: 100-150 VDC (nominal 125VDC)

Cold start surge current: 115VAC maximum 15A; 230VAC maximum 30A, lasting approximately 100ms

Input power: typical 125W, maximum 150W

Output specifications (total output power 100W, 0-60 ℃ natural cooling, fanless)

Table

Maximum current of output rail+5   VDC20   A+12   VDC2   A -12   VDC1   A

The power supply outputs+5V/+12V/-12V to the VME backplane, while also outputting AC_CAIL # fault logic signals to various modules on the backplane.

Environment and Machinery

Working temperature: 0~+60   ℃, natural convection cooling, no fan required

Storage temperature: -40~+85 ℃

Humidity: 5-95%, no condensation, used in IP20 cabinet

Front panel: Power On/Off logic switch (does not cut off AC incoming line); Power/Fault LED Status Indicator

Protection: overvoltage, overcurrent, and over temperature protection; Support single cycle AC power outage maintenance (can withstand 1 AC cycle power outage without losing output)

Important practical points

Must be inserted into the host rack Slot0; The expansion rack cannot use PSA100 and requires a dedicated backplane power supply.

When selecting, the power consumption of all CPUs (such as IC698CPE020-CC), IO, and communication modules on the rack should be accumulated, and the total output should not exceed 100W.

The hardware switch is a logical switch, and the module is still live inside. Maintenance must disconnect the front-end input power supply.

The RX7i system and its components are considered open equipment (having live electrical parts that may be accessible to users) and must be installed in a protective enclosure or incorporated into other assemblies manufactured to provide safety. As a minimum, the enclosure or assemblies shall provide a degree of protection against solid objects 12 mm and larger (e.g. fingers). This equates to a NEMA/UL Type 1 enclosure or an IP20 rating (IEC 60529).

When an RX7i system is installed in an area designated as Class 1 Zone 2 in Europe, compliance with the ATEX Directive requires an enclosure with a higher degree of protection.

The enclosure must be able to adequately dissipate the heat generated by all of the components mounted inside so that no components overheat. Heat dissipation is also a factor in determining the need for enclosure cooling options such as fans and air‑conditioning. A minimum space of at least 152.4 mm (6 inches) is required on all sides of the RX7i rack for cooling. Additional space may be required, depending on the amount of heat generated by the equipment during operation. Appendix B explains how to calculate heat dissipation for RX7i modules and field devices in an enclosure.

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