1. General Information

• Part Number: 0-49008-A (also 049008A)

• Manufacturer: Reliance Electric / Baldor / Rockwell Automation (now ABB)

• Product Type: CardPak Limit & Speed Control Module

• Application: Reliance CardPak racks, FlexPak / MinPak DC drives, industrial speed/limit protection systems

• Status: Obsolete (legacy); available as new surplus, rebuilt, or refurbished

• Certifications: CE, UL, ISO9001 (as applicable)

2. Functional Description

• Precision overspeed / underspeed & position limit protection for DC drives

• Monitors analog speed feedback (0–10 VDC) or encoder signals

• Provides adjustable high/low speed trip thresholds and end-limit interlocks

• Drives isolated relay outputs for alarms, trips, and safety interlocks

• Interfaces with other CardPak modules (power supply, timing, linear voltage)

• Direct plug-in replacement for legacy Reliance drive control racks

3. Electrical Specifications

• Control Power: +24 VDC (±10%) from CardPak PSU (e.g., 0-49001-9)

• Auxiliary Power: 120 VAC, 50/60 Hz (optional)

• Speed Input: 0–10 VDC analog or pulse encoder signal

• Adjustments: Multi-turn potentiometers for high speed, low speed, and limit setpoints

• Outputs: 2 × isolated relay contacts (dry contact, NO/NC)

• Contact Rating: 5 A @ 120 VAC / 24 VDC resistive

• Accuracy: ±1% of full scale

• Temperature Drift: ±0.05% / °C

• Protection: Reverse polarity, overvoltage, short-circuit, ESD

4. Mechanical Specifications

• Form Factor: Standard CardPak plug-in module (edge connector)

• Dimensions (W × H × D): 4 in × 6 in × 2 in (102 mm × 152 mm × 51 mm)

• Weight: 1.5 lbs (0.7 kg) approx.

• Enclosure: Black metal, industrial grade

• PCB: Conformal coated (moisture/dust resistance)

• Connector: Gold-plated edge connector (CardPak standard)

• Mounting: CardPak rack slot, vertical installation

5. Environmental Ratings

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

• Storage Temperature: −40 °C to +70 °C

• Humidity: 5%–95% RH, non-condensing

• Vibration: 1 g (10–100 Hz), industrial

• Shock: 10 g, 11 ms duration

6. Key Features

• Dual Speed Thresholds: Independent high/low speed trip settings

• Limit Inputs: Accepts position/end-limit signals for interlock control

• Isolated Relays: Noise immunity for alarm and safety circuits

• LED Indicators: Power, trip, and limit status (onboard)

• Drop-In Compatibility: Direct swap for all legacy CardPak racks

• Repairable: Component-level service available (refurbished units common)

7. Compatibility

• Racks: Reliance CardPak series (all slots)

• Drives: FlexPak DC, MinPak DC, and related Reliance drive systems

• Related Modules: 0-49001-9 (PSU), 0-49005-5 (linear voltage), 0-49008-6 (timer)