Emerson 1C31194G02 is a valve positioner module, belonging to the electronic module group. It provides a 23.75 VAC peak-to-peak, 3 kHz drive for LVDT (Linear Variable Differential Transformer) and can be used in combination with various individual modules to achieve precise control and feedback of valve position in industrial control systems.
Technical Specifications
LVDT Excitation Output: 23.75 VAC peak-to-peak, with a deviation of ±11%; frequency 3.0 kHz, deviation ±10%; minimum load impedance 500 ohms; maximum annual drift 0.5%.
Servo Valve Coil Output Peak Voltage:
When paired with 1C31197G01: Capable of driving up to three 82-ohm coils, with voltage ±2.04 V.
When paired with 1C31197G02: Capable of driving up to three 250-ohm coils, with voltage ±4.20 V.
When paired with 1C31197G03: Capable of driving up to three 1000-ohm coils, with voltage ±8.26 V.
When paired with 1C31197G04: Capable of driving up to two 125-ohm coils, with voltage ±4.5 V.
Servo Valve Coil Output Voltage Accuracy: 0.4% of full-scale output.
Field Interface Insulation: 1000 VDC; the valve positioning field interface has short-term insulation of 50 V and 150 V from the logic common terminal / Ovation I/O bus.
SLIM Interface: Serial port is RS-485, baud rate 9600, insulation value ±1000 VDC.
Local Serial Port: RS-232, non-isolated, baud rate 19200.
Trip Digital Input: Rated voltage 24 V / 48 VDC, minimum 18 VDC, maximum 60 VDC; contact status change propagation delay: minimum 1.9 ms, maximum 25.5 ms; maximum cable length 1000 ft (cable capacitance ≤50 pF/ft), insulation value ±1000 VDC.
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Key Features and Advantages of Emerson 1C31194G02
Precise Drive and Control: The Emerson 1C31194G02 provides specific voltage and frequency drive for LVDT. Combined with different individual modules, it can accurately adapt to various servo valve coils, meet different load requirements, and achieve precise control of valve position.
Flexible Module Configuration: The Emerson 1C31194G02 can be combined with multiple individual modules such as 1C31197G01, G02, G03, and G04. Selection can be made according to the impedance and quantity requirements of servo valve coils in practical applications, enhancing the module's applicability.
Reliable Insulation Performance: For the Emerson 1C31194G02, field interfaces, SLIM interfaces, trip digital inputs, etc., all have excellent insulation performance, improving the module's anti - interference capability and operational stability in industrial environments.
Multiple Interface Support: The Emerson 1C31194G02 is equipped with serial interfaces such as RS - 485 and RS - 232, facilitating communication and data transmission with other devices, and enabling easy system integration and remote monitoring.
Technical Parameters of Emerson 1C31194G02
LVDT Position Feedback Input Range: Maximum 25 VAC peak - to - peak (for LVDT A and LVDT B).
LVDT Position Feedback Input Impedance: Differential input: 20 kΩ (for LVDT A and LVDT B) with floating source. Single input line referenced to common: 10 kΩ (for LVDT A and LVDT B).
Channel Quantity: 1 valve positioning field interface channel. Each I/O channel has 8 effective point types, such as trip status, auxiliary voltage detection, etc.
Application Fields
This module is applicable to industrial automation scenarios requiring precise control of valve positions, such as:
Power Industry: Used for control of turbine valves to ensure stable power generation processes;
Chemical Industry: Achieves precise adjustment of various process pipeline valves in process control to ensure safe and efficient production;
Oil and Gas Sector: Applied in pipeline transportation and processing systems to achieve precise positioning and control of valves.
Compatible Emerson Products
Personality Modules: Can be used with personality modules such as 1C31197G01, 1C31197G02, 1C31197G03, and 1C31197G04 to adapt to different servo valve coils.
Ovation Controller: The module provides an interface between the Ovation controller and field electro-hydraulic servo valve actuators. The MASTATION algorithm must be resident in the Ovation controller when in use.
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