Bachmann|NT255 00013251-00| Power Supply Module

Description
The Bachmann NT255 is a high-efficiency power supply module designed to deliver stable and isolated power to CPUs and backplane modules in industrial automation systems.

Features

• Wide input voltage range with electronic reverse polarity protection
• Provides multiple output voltages for CPU and system modules
• High output power with peak load capability
• Integrated monitoring and diagnostics
• Durable design with heat dissipation and shock resistance

Technical Specifications

Input

• Voltage range: 18 V DC to 34 V DC
• Peak input voltage: +40 V for <1 s/min
• Max. power consumption: 68 W
• Reverse polarity protection: Electronic
• Starting current limitation: Up to 8 A after 5 ms
• Fuse: SMD fuse, 7 A (device defect)
• Input monitoring: Yes, for powerfail detection

Output

• Continuous output power: 45 W
• Peak output power: 55 W
• Output voltages:
  • +5 V / 6 A (8 A peak)
  • +15 V / 0.5 A
  • -15 V / 0.5 A
• Power-fail bypass: 18 ms
• Power-fail message delay: After 3 ms

Monitoring & Indication

• State indicators: LEDs for Power, Error, Ready
• Powerfail signal: Processable by application program
• Galvanic isolation: 500 V (input/system), 100 V (input/ground)

Environmental Conditions

• Operating temperature: -30 °C to +60 °C
• Storage temperature: -40 °C to +85 °C
• Relative humidity: 5 % to 95 % (noncondensing)
• Pollution degree (IEC 60664-1): 2