1. Model Definition

• 0-57412: Base DC drive field regulator module

• -2: Revision 2 platform

• A: Minor engineering tweak (component tolerance & firmware update), same form/fit as -2

2. Basic Specifications

• Function: Closed‑loop regulation of DC motor field voltage/current

• Current Calibration: 4 selectable ranges (same as -2)

• Power Supply: 5 V DC from backplane; field power external

• PWM Output Frequency: Up to 50 kHz

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −40 °C to +85 °C

• Dimensions (W×H×D): 32 × 298 × 187 mm

• Weight: ~0.71 kg

• Conformal Coating: Partial (same as -2)

• Manual: J-3610 / J-3640

3. Interfaces & Communication

• P6 (9‑pin D‑Sub): Isolated armature voltage monitoring

• P5 (9‑pin D‑Sub): To external field power module

• P4 (25‑pin D‑Sub): PWM output to field winding

• Backplane: AutoMax DCS 5000 system bus

• Status LEDs: Power, OK, Fault, Field Drive Active

4. Key Functions

• Maintains constant field current for stable torque/speed

• High‑frequency PWM for efficient field excitation

• Isolated armature voltage feedback for accuracy under variable loads

• Four current ranges for motor matching

• Fault detection: field overcurrent, open circuit, power failure

• -2A change: tighter component tolerances & minor firmware bug fix; electrically interchangeable with -2

5. Applications

• AutoMax DCS 5000 DC motor field control

• Rolling mills, extruders, paper machines, heavy‑duty line shafts

• Direct replacement for 0-57412-1 / -2 in legacy systems

• Field excitation retrofit for traditional DC drives

6. Revision Cross‑Reference

• -1: Rev 1, no coating, early layout

• -2: Rev 2, partial coating, updated components

• -2A: Rev 2A, partial coating, tolerance/firmware update (drop‑in for -2)

• -D: Rev D, full coating, enhanced environmental protection

• -E: Rev E, final mainstream, full conformal coating