General Information

• Part Number: 0-49017-49 (also written as 04901749)

• Manufacturer: Reliance Electric / Rockwell Automation

• Product Type: CardPak Summing Module / Summing Card

• Application: FlexPak / MinPak DC drives, CardPak rack systems; sums & blends multiple analog control signals (speed, current, feedback, trim)

• Status: Obsolete (legacy); available as used / refurbished / surplus

• Series: CardPak Plug-in Control Modules (0-49017-xx family)

Electrical Specifications

• Control Power: +24 VDC (±10%) from CardPak PSU

• Inputs: 4–6 isolated analog channels (0–10 VDC / ±10 VDC) for setpoint, feedback, limit, and trim signals

• Output: Single summed/scaled analog signal (0–10 VDC or ±10 VDC) to regulator/driver cards

• Signal Range: Precision scaling/offset adjustment via on-board potentiometers

• Isolation: Galvanic isolation between input channels and common

• Protection: Overvoltage, reverse polarity, transient suppression

• Impedance: High-impedance inputs; low-impedance output

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: Approx. 1.65 lbs (0.75 kg)

• Enclosure: Industrial black metal, dust & EMI resistant

• PCB: Conformal coated (moisture/corrosion protection)

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

• Mounting: Vertical slot in CardPak rack

Environmental Ratings

• Operating Temp: 0 °C to +55 °C

• Storage Temp: −40 °C to +70 °C

• Humidity: 5%–95% RH, non-condensing

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

• Shock: 10 g, 11 ms duration

Key Features

1. Multi-signal summing: Combines speed reference, tach feedback, current limit, and trim signals into one control output

2. Precision adjustment: On-board pots for gain, offset, and channel weighting

3. High accuracy: Stable linear summing for tight speed/torque regulation

4. Signal isolation: Eliminates ground loops and crosstalk between control loops

5. Drop-in replacement: Direct swap for any 0-49017-xx summing card in CardPak racks

6. Robust reliability: Designed for continuous heavy-industry operation

Compatibility

• Racks: All Reliance CardPak series racks

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

• Related Modules: 0-49001-14 (PSU), 0-49009-3 (regulator driver), 0-49011-6A (gate drive), 0-49013-4 (speed feedback)