ABB PFTL101B 10KN 3BSE004197R1

The PFTL101B is a high-precision, single-channel weight transmitter used to process the signal from a strain gauge load cell (or multiple load cells in parallel). Its primary function is to convert the millivolt (mV) signal from the load cell(s) into a standardized, high-level output signal (like 4-20 mA or digital protocols) for process control systems (PLCs, DCS).

The 10KN in the code is a customer-specific variant code, often indicating a particular housing, connector type, or output configuration. The 3BSE004197R1 is the unique ABB Material Master number for this specific device version.

Detailed Technical Parameters

1. Electrical Characteristics

Input (Load Cell Side):
 

Excitation Voltage: Typically 10 VDC (standard for powering the load cell bridge).

Number of Load Cells: Can typically connect 1 to 4 x 350 Ω load cells in parallel. (Always confirm maximum capacity for your specific setup).

Input Signal Range: Millivolt signal corresponding to the load cell's output (e.g., 2 mV/V).

Output (Process Control Side):
 

Analog Output: Typically one or two isolated 4-20 mA outputs. One for "weight" and one for "rate" or a second process variable.

Digital Communication: Options often include PROFIBUS-DP, Modbus RTU, or other fieldbus protocols. The exact protocol is usually defined by the order code.

Load Capacity: 4-20 mA output drives up to a 500 Ω load.

Auxiliary I/O:
 

Digital Inputs (DIs): Often 2-3 programmable inputs for functions like tare, zero setting, preset, or fault reset.

Digital Outputs (DOs)/Relays: Often 2-3 programmable outputs for status (e.g., "Ready", "Fault"), limit values (e.g., high/low weight alarm), or control commands.

Serial Port: Often an RS-232 or RS-485 port for local configuration via a PC.

2. General Specifications

Power Supply:
 

Voltage: 20-30 VDC (24 VDC nominal) or 100-240 VAC (50/60 Hz), depending on the ordered version.

Power Consumption: Typically around 10-15 W.

Accuracy:
 

Total System Accuracy: Highly dependent on the entire system (load cells, mechanical installation). The transmitter itself is very accurate, often with an error of < ±0.01% of span.

Temperature Drift: Very low, typically < ±0.0015% of span / °C.

Environmental Conditions:
 

Operating Temperature: -10°C to +60°C (+14°F to +140°F).

Storage Temperature: -40°C to +85°C.

Relative Humidity: 5% to 95% (non-condensing).

Protection Rating: Typically IP20 (for installation in a control cabinet). Not suitable for direct exposure to dust or water.

EMC (Electromagnetic Compatibility): Complies with industrial standards like IEC/EN 61326, ensuring reliable operation in electrically noisy environments.

3. Mechanical Specifications

Housing: Designed for DIN rail mounting (standard 35 mm top-hat rail).

Dimensions (Approx.): Varies by model, but a common form factor is around 110 mm (H) x 120 mm (W) x 120 mm (D).

Connections: Spring-clamp or screw terminals for power, I/O, and load cell connections. A circular connector (e.g., M12 or proprietary) is common for the load cell connection.

4. Key Features and Functions

Advanced Diagnostics: Continuous monitoring of load cell health, including detection of shorted or broken cables, load cell overload, and signal deviation.

Calibration and Configuration: Easy setup via:

Integrated Keypad and Display: (if equipped) for local calibration and troubleshooting.

Software: Pfister® SWT100 or similar dedicated configuration software via the serial port.

Tare Function: Automatic and manual tare functions to compensate for the weight of containers or empty belts.

Filtering: Adjustable digital filters to stabilize the weight signal in environments with mechanical vibration.

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