1. General Information

• Part Number: 57412, 57412-2, 57C412

• Manufacturer: Reliance Electric (Rockwell Automation)

• Series: AutoMax DCS 5000 / PLC

• Type: Field Regulator Module (DC drive field control)

• Application: Precise regulation of motor field voltage/current for DC drives

• Status: Obsolete; refurbished/used available

• Mounting: AutoMax rack plug‑in

  

2. Electrical Specifications

• Backplane Power: +5 VDC, ±12 VDC

• Field Output: Adjustable DC field voltage/current

• Current Calibration: 4 user‑selectable levels

• Isolation: Isolated armature voltage, field power, field gate connectors

• Consumption: ≤ 8 W

• Indicators: Power, Fault, Run, Status LEDs

3. Mechanical Data

• Dimensions (W×H×D): 31.8 × 187.3 × 38.1 mm (standard AutoMax)

• Weight: approx. 0.71 kg (1.57 lbs)

• Construction: Conformal coated, industrial grade

4. Environmental

• Operating Temp: 0 °C to +55 °C

• Storage Temp: −20 °C to +70 °C

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

• Certifications: UL, CSA, CE

5. Key Features

• Closed‑loop field current regulation for DC motors

• Four‑level current calibration for flexibility

• Fast fault detection and LED diagnosis

• Hot‑swap capable

• Compatible with heavy‑duty industrial DC drives

6. Compatibility

• Racks: AutoMax 6‑slot / 10‑slot / 16‑slot

• CPU: 57407, 57C407 series

• I/O: 57401, 57405, 57406, 57410, 57411

• Replacement: 57412‑2 / 57C412 interchangeable