Bachmann NT255 0031426-00 Power Supply Module

Overview

The NT255 0031426-00 is a high-efficiency power supply module designed for Bachmann M1 automation systems. It delivers regulated 24 V DC output to power CPUs, I/O modules, and communication interfaces. The module ensures stable performance in industrial environments. It includes active protection features and supports redundant operation for critical applications. The design focuses on reliability, efficiency, and long-term continuous operation.

Technical Specifications

• Input Voltage Range: 85 V AC to 264 V AC

• Input Frequency: 47 Hz to 63 Hz

• Output Voltage: 24 V DC ±1%

• Output Current: Up to 5 A continuous

• Efficiency: Typically greater than 90%

• Power Factor Correction: Active PFC included

• Hold-Up Time: Greater than 20 ms at full load

Protection Features:

• Overvoltage protection

• Overcurrent protection

• Short-circuit protection

• Thermal shutdown

• Reverse polarity protection

Redundancy & Reliability:

• Supports parallel operation for redundant power setups

• Maintains stable operation under demanding industrial conditions

Mechanical Design:

• Form Factor: Standard M1 module size

• Mounting: DIN rail compatible

• Cooling: Passive convection

• Status Indicators: LED display for power and fault

Environmental Conditions:

• Operating Temperature: −30°C to +60°C

• Storage Temperature: −40°C to +85°C

• Humidity: 5% to 95% non-condensing

• Vibration Resistance: Complies with IEC 60068-2-6

Additional Electrical Data:

• Input Voltage Peak: +40 V for t<1 s

• Power Consumption: Max. 68 W

• Output Power Continuous: 45 W

• Output Power Peak: 55 W temporary overload

• Output Voltages: +5 V/6 A (8 A peak), +15 V/0.5 A, −15 V/0.5 A

• Power-Fail Bypass Time: 18 ms

• Power-Fail Message Delay: 3 ms

• Monitoring: Supply voltage, output voltages, and CPU signal

• State Display: LEDs for Power, Error, Ready

• Galvanic Isolation: 500 V (Input/System), 100 V (Input/Ground)