G88102201 -

Carlo Gavazzi Dupline Fieldbus Module G88102201 — Technical Specifications and Features

The Carlo Gavazzi Dupline G88102201 is a compact, two-channel input module designed for decentralized automation systems based on the Dupline® fieldbus platform. It provides a simple and reliable way to interface mechanical switches, pushbuttons, and contacts with the Dupline network. The module is engineered for easy integration in building automation, industrial monitoring, and control systems where space is limited, and reliability is critical.

Product Overview

The G88102201 module acts as a transmitter, converting the status of two dry-contact inputs into Dupline® signals that can be transmitted across long distances via a two-wire bus. It eliminates the need for traditional point-to-point wiring and drastically reduces installation time and costs.

Its ultra-compact housing allows it to be mounted directly behind wall switches, inside junction boxes, or in small electrical enclosures. The unit draws its power from the Dupline bus itself, meaning no separate power supply is required. This makes it especially suitable for applications where simplicity, efficiency, and minimal wiring are key considerations.

Key Features

Two Independent Inputs:
Supports two separate dry-contact inputs for pushbuttons, sensors, or mechanical switches.
Bus-Powered Operation:
Powered directly by the Dupline® network, removing the need for additional wiring or local power sources.
Compact Design:
The small and robust housing is ideal for space-limited installations, such as behind wall plates or inside electrical boxes.
High Environmental Protection:
The housing offers IP65 protection, ensuring resistance to dust and moisture, making it suitable for industrial and building environments.
Reliable Signal Transmission:
Built-in signal stabilization and debounce circuitry ensure that contact bounce and electrical noise do not affect signal integrity.
Wide Operating Range:
Performs reliably in extreme conditions, with a temperature range from −40°C to +70°C.

Technical Specifications

General Characteristics:

Model: G88102201
Function: Dupline® 2-channel digital input transmitter module
Mounting: Suitable for installation in junction boxes or behind standard wall switches
Housing Material: Noryl GFN1, black thermoplastic
Degree of Protection: IP65

Electrical Specifications:

Power Supply: Supplied by the Dupline® bus (no external power required)
Input Type: Dry contact, mechanical switch or relay contact
Number of Inputs: 2 independent channels
Input Activation Current: Minimum 15 µA
Input Voltage Drop: ≤ 1 V when contact is closed
Typical Current Consumption (bus load):
- Idle condition: approximately 640 µA
- Activated (both inputs ON): approximately 740 µA
Input Pulse Extension: Minimum 272 ms to ensure reliable detection of short pulses
Input Response Time: < 50 ms
Isolation: Inputs are galvanically isolated from the Dupline bus

Mechanical Specifications:

Dimensions (H × W × D): 28 × 14 × 10 mm (compact form factor)
Cable Connection: Pre-wired with short leads for direct switch connection (recommended length ≤ 0.2 m)
Weight: Approximately 20 g
Mounting Method: Free installation or embedded in junction box

Environmental Conditions:

Operating Temperature: −40°C to +70°C
Storage Temperature: −20°C to +70°C
Relative Humidity: 20–80% (non-condensing)
Vibration Resistance: 10–55 Hz, 1.5 mm amplitude
Shock Resistance: 15 g for 11 ms

Typical Applications

The G88102201 is widely used in building automation, industrial control, and facility management systems where multiple digital inputs are distributed across a site. Its most common applications include:

Lighting Control Systems: Connecting wall switches or motion sensors to a central Dupline controller for automated lighting management.
Access Control: Monitoring door contacts, pushbuttons, or key switches in secure access systems.
Alarm and Security Systems: Linking window or door contacts, panic buttons, and intrusion sensors into a single fieldbus network.
HVAC and Energy Management: Capturing remote signals from limit switches, dampers, or thermostats.
Industrial Process Monitoring: Integrating local control signals, such as emergency stops or equipment status indicators, into a centralized monitoring system.

Functional Description

Each of the two inputs on the G88102201 can be assigned to a specific Dupline channel address. When a connected contact is closed, the module transmits a logic “1” signal to the bus; when opened, it transmits a logic “0.” The Dupline master or gateway receives and interprets these signals, allowing remote monitoring or actuation in real time.

Since the device is bus-powered, the installation requires only two wires — carrying both power and data. This drastically simplifies wiring in comparison to traditional point-to-point cabling systems. The built-in pulse extension ensures even very short switch activations are properly recognized, providing dependable operation even with mechanical or momentary pushbuttons.

Advantages of Using G88102201

Simplicity: Reduces wiring complexity and speeds up installation.
Flexibility: Allows for decentralized I/O placement anywhere along the Dupline bus.
Reliability: Immune to electrical noise and voltage drops thanks to Dupline’s robust signal transmission.
Low Power Consumption: Consumes minimal current from the bus, maintaining network efficiency.
Durability: Designed for long-term operation in harsh or demanding environments.

Conclusion

The Carlo Gavazzi Dupline G88102201 module represents a compact and efficient solution for transmitting digital input signals over the Dupline fieldbus system. Its combination of robust design, simple wiring, and versatile functionality makes it ideal for distributed control architectures. Whether in industrial automation, building management, or energy-saving systems, the G88102201 delivers dependable input signal integration with minimal installation effort and maximum reliability.

Technical Summary: