1. General Information

• Part Number: 0-49026-21 (04902621)

• Manufacturer: Reliance Electric (Rockwell Automation / Baldor‑Reliance)

• Type: CardPak Plug‑In Tester / Calibration Module

• Series: 0-49026‑xx (CardPak test & setup cards)

• Application:

  • Test & calibration of CardPak racks and drive cards (0-49017‑xx, 0-49020‑xx, etc.)

  • Analog signal injection & measurement for DC drive troubleshooting

  • Compatible with FlexPak / MinPak DC drive systems

• Status: Obsolete / Discontinued (legacy; used/refurbished only)

• Key Function: Front‑panel meter + selector switch for in‑circuit testing of reference, summing, and regulator cards.

2. Front‑Panel Controls & Indicators

• Meter: Analog DC voltmeter, range 0–10 VDC (center‑zero, −5 V to +5 V)

• Selector Switch (12‑position):

  • Positions 1–10: Test points for CardPak backplane signals

  • Position TEST: Inject internal 0–10 V reference

  • Position SIGNAL+: Monitor external input signal

• Adjustment: Onboard trim pot for meter calibration

• Terminals: Front‑panel jacks for external signal connection

3. Electrical Specifications

• Control Power: +24 VDC ±10% (CardPak bus, backplane powered)

• Meter Range: −5 VDC to +5 VDC (center zero)

• Accuracy: ±1% full scale (calibrated)

• Input Impedance: >100 kΩ (high impedance, no load on DUT)

• Signal Injection: Precision 0–10 VDC internal reference

• Isolation: Galvanic isolation between meter and backplane

• Protection: Overvoltage, reverse polarity, ESD

4. Mechanical & Physical

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

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

• Weight: ~1.7 lbs (0.77 kg)

• Connector: Gold‑plated edge contacts (CardPak standard)

• Faceplate: Metal, silk‑screened markings (TEST, SIGNAL+, 1–12)

• PCB: Conformal coated (moisture/dust resistance)

5. 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)

• Shock: 10 g, 11 ms

6. Key Features

1. All‑in‑one test tool: Combines signal source, voltmeter, and multiplexer.

2. 12‑point scanning: Selector switch accesses critical backplane test points.

3. High‑impedance measurement: Does not load or distort signals under test.

4. Drop‑in compatible: Fits any CardPak slot; no external power needed.

5. Essential for maintenance: Used to diagnose 0-49017 (summing), 0-49020 (reference), and 0-49009 (regulator) cards.

7. Compatibility

• Racks: All Reliance CardPak series racks

• Drives: FlexPak DC, MinPak DC, legacy Reliance DC drives

• Related Modules:

  • 0-49017‑xx: Summing cards (signal mixing)

  • 0-49020‑xx: Speed reference cards

  • 0-49009‑3: Regulator/driver card

8. 0-49026 Series Variations

• 0-49026-2: Basic tester (no center‑zero meter)

• 0-49026-21: Standard tester (center‑zero meter, 12‑position switch)

• 0-49026-23: High‑accuracy version (±0.5% meter accuracy)