The Bently Nevada 2155/40-01 TDISecure is a secure, high-speed communication processor designed for advanced machinery condition monitoring. It supports 24 dynamic analog channels and 24 process measurement inputs, providing parallel sampling with bandwidths from DC to 30 kHz. This model includes an AC power input, making it ideal for facilities using standard mains power. Users can integrate it easily into existing systems using Ethernet or Modbus® communication. Additionally, the processor maintains the same physical footprint as legacy systems like TDXnet, ensuring simple upgrades.

Technical Specifications

Model

• Model Type: TDISecure with AC power input
• Model Number: 2155/40-01

Power Input

• Voltage Range: 100–240 VAC
• Frequency: 50/60 Hz
• Power Consumption: 50W
• Voltage Fluctuation Tolerance: ±10%

Dynamic Analog Inputs

• Channels: 24
• Input Impedance: 143 kΩ
• Frequency Range: DC to 30 kHz
• Signal Range: –25V to +25V
• Amplitude Limit: 25V peak-to-peak
• Accuracy: ±1% full scale

Process Measurement Inputs

• Channels: 24
• Configurable As: 4–20 mA or DC voltage

Keyphasor® Inputs

• Inputs: 4
• Supports: Multiple events per revolution
• Max Speed Input: Up to 20 kHz
• Sensor Power: Provides power for 4 Proximitor® sensors
• Includes: Alarm In/Out for each Keyphasor

Discrete Inputs

• Channels: 24
• Use: Alarms and OK status monitoring

Communication

• Ethernet: 10/100 Base-T (TCP/IP) for System 1
• Serial Ports: RS-232/422/485 (Modbus® support)

​Environmental Ratings

• Operating Temperature: –30°C to +65°C (–22°F to +149°F)
• Storage Temperature: –40°C to +85°C (–40°F to +185°F)
• Humidity: Max 95%, non-condensing
• Pollution Degree: 2
• Installation Category: II (Indoor Use)
• Max Altitude: 2000 m

Mechanical

• Dimensions: 384 mm (W) × 216 mm (D) × 136 mm (H)
• Weight : 4.2 kg (9.3 lb)