Product Description
Allen-Bradley 1756-PB72 Standard DC Power Supply
The Allen-Bradley 1756-PB72 is a Standard DC Power Supply for ControlLogix chassis, providing regulated DC power with high reliability for industrial automation applications.
Technical Specifications
Power Input & Output
| Attribute | 1756-PB72/C, 1756-PB72K/C |
|---|---|
| Input Voltage Range | 18–32V DC |
| Nominal Input Voltage | 24V DC |
| Maximum Input Power |
85 W @ 50°C (122°F) 70 W @ 60°C (140°F) |
| Maximum Output Power |
60 W @ 0–50°C (32–122°F) 50 W @ 0–60°C (32–140°F) |
| Inrush Current (Max) | 30 A |
| Hold-up Time | 30 ms @ 18–32V DC, 60 W 40 ms @ 18–32V DC, 50 W |
| Current Capacity |
@ 1.2V: 1.5 A @ 3.3V: 2 A @ 5.1V: 8 A @ 50°C (122°F) / 6 A @ 60°C (140°F) @ 24V: 2.5 A @ 50°C (122°F) / 2.0 A @ 60°C (140°F) |
| Isolation Voltage | 250V (continuous), Reinforced Insulation Type, Power Input to Backplane Type tested: 3150V DC for 60 s |
Mechanical & Installation Specifications
| Attribute | 1756-PB72/C |
|---|---|
| Weight (Approx.) | 0.77 kg (1.7 lb) |
| Dimensions (HxWxD) | 14.0 x 7.8 x 14.5 cm (5.51 x 3.07 x 5.71 in.) |
| Module Location | Left side of 1756 chassis |
| Compatible Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| Chassis Compatibility | Series A, B, C |
| Wire Size |
2.5 mm² (14 AWG) solid or stranded copper wire, rated at 90°C (194°F) or greater Max insulation: 1.2 mm (3/64 in.) |
| Wire Category | Category 1 (on power ports) |
| Conductor Screw Torque | 0.565 N•m (5 lb•in) |
Environmental Specifications
| Attribute | 1756-PB72/C |
|---|---|
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Max Surrounding Air Temp | 60°C (140°F) |
| Non-Operating Temperature | -40°C to +85°C (-40°F to +185°F) |
| Relative Humidity | 5–95% (non-condensing) |
| Vibration Resistance | 2 g @ 10–500 Hz |
| Shock Resistance (Operating) | 30 g |
| Shock Resistance (Non-Operating) | 50 g |
| North American Temp Code | T4 |
Electromagnetic Compliance & Immunity
| Parameter | Compliance Standard | Specification |
|---|---|---|
| Emissions | IEC 61000-6-4 | - |
| ESD Immunity | IEC 61000-4-2 |
6 kV (contact discharges) 8 kV (air discharges) |
| Radiated RF Immunity | IEC 61000-4-3 |
10V/m with 1 kHz sine wave 80% AM (80–2000 MHz) 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz 3V/m with 1 kHz sine wave 80% AM (2000–2700 MHz) |
| EFT/B Immunity | IEC 61000-4-4 | ±4 kV at 5 kHz on power ports |
| Surge Transient Immunity | IEC 61000-4-5 | ±1 kV line-line (DM) ±2 kV line-earth (CM) on power ports |
| Conducted RF Immunity | IEC 61000-4-6 | 10V rms with 1 kHz sine wave 80% AM (150 kHz–80 MHz) |
| Voltage Variation Immunity | IEC 61000-4-29 | 10 ms interruption on DC supply ports 60% dips for 100 ms on DC supply ports 100% dips for 50 ms on DC supply ports ±20% fluctuations for 15 min on DC supply ports 5 s interruptions on DC supply ports |