1. General Information

• Part Number: 57405 (0-57405, 57405-A/B/C/D/E)

• Manufacturer: Reliance Electric (Rockwell Automation)

• Series: AutoMax PLC / Distributed Control System (DCS)

• Type: Drive Analog I/O Module (PMI Interface)

• Application: Analog signal conditioning & control for Reliance drives (SD3000/SF3000/SA3000)

• Status: Obsolete (discontinued); refurbished/surplus available

• Mounting: AutoMax rack‑mount, plug‑in backplane

• Manual: D-2715

2. Electrical Specifications

• Backplane Supply: +5 VDC, ±12 VDC

• Field I/O Channels: 10‑circuit terminal strip (P3)

• Communication Port: RS‑232 (P4, labeled “TO PMI”)

• Signal Type: Analog input/output for drive control (speed, torque, feedback)

• Isolation: Channel‑to‑logic isolation (industrial noise immunity)

• Status Indicator: 1 × LED (OVER SPEED CALIBRATION)

3. Mechanical Characteristics

• Form Factor: Standard AutoMax plug‑in module

• Dimensions (W × D × H): 31 × 190 × 34.2 mm (1.22 × 7.48 × 1.35 in)

• Weight: Approx. 0.8–0.88 kg (1.76–1.94 lbs)

• Connection: Rear gold‑finger edge connector (backplane); front screw terminal block (P3) & RS‑232 (P4)

• Coating: Conformal coated (moisture/dust resistance)

4. Environmental Ratings

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: -20 °C to +70 °C

• Humidity: 10%–90% RH, non‑condensing

• Altitude: Up to 3,000 m (10,000 ft)

• Certifications: UL, CSA, CE (original standards)

5. Key Features

• Dedicated analog I/O for Reliance Power Module Interface (PMI)

• 10‑circuit terminal strip for field analog signals

• RS‑232 port for direct PMI communication & calibration

• Over‑speed calibration LED for diagnostics

• Hot‑swap capable (replace without system shutdown)

• Fully compatible with AutoMax racks & drive systems

6. Compatibility

• Racks: All AutoMax series racks & backplanes

• Drives: SD3000, SF3000, SA3000 series (via PMI)

• Replacement: 57405‑A/B/C/D/E fully interchangeable with 0-57405