ABB FCC/S1.5.2.1 KNX Fan Coil Controller (2CDG110235R0011)

Description

Introduction

The ABB FCC/S1.5.2.1 Fan Coil Controller is an MDRC device designed for efficient climate control of fan coil units via KNX TP bus systems. Equipped with an integrated room temperature controller, this device directly manages continuous fan speed and valve drives to maintain precise ambient conditions in commercial and residential KNX installations. This device is part of our professional KNX AC Controller range.

Featuring two electronic outputs for valve control, a continuous analog output for fan operation, and a high-capacity 16 A relay output for auxiliary heating, the FCC/S1.5.2.1 offers complete room automation flexibility. It also provides four inputs for room status monitoring and supports manual operation along with advanced diagnostics via the ABB i-bus Tool.

Key Features

• Designed for KNX (TP) bus systems with MDRC modular DIN-rail housing.
• Features 4 total outputs: 2 electronic outputs (PWM), 1 analog continuous output (0-10 V), and 1 relay output (16 A).
• Includes 4 digital inputs for status monitoring and external sensor connection.
• Integrated room temperature controller with continuous manipulated variable control.
• Supports manual operation directly on the device for testing and commissioning.
• Compatible with the ABB i-bus Tool for advanced diagnostic procedures.
• IP20 degree of protection as per standard housing specifications.

Benefits

• Integrated room temperature control allows direct local processing and output manipulation without requiring a separate room controller.
• Flexible valve driving options enable the control of two thermoelectric valve drives or one motor-driven valve drive for heating and cooling.
• Analog fan output provides continuous control (0-10 V) for smooth and energy-efficient fan speed adjustment.
• High-power 16 A relay output facilitates direct switching of auxiliary heating loads or additional equipment.
• Four multi-purpose inputs support window contacts, dew point sensors, level sensors, temperature sensors, or SAR/A and SAF/A analog room control units.
• Integrated valve protection functions safeguard valve mechanics against sticking during extended periods of inactivity.

Technical Specifications

Specification	Value
Extended Product Type:	FCC/S1.5.2.1
Special Functions:	Valve Protection
Product ID:	2CDG110235R0011
Instructions and Manuals:	2CDG941188P0002
Number of Outputs:	4
Number of Digital Inputs:	4
Manual Operation:	Yes
Number of Batteries:	0
Declaration of Conformity – CE:	2CDK508229D2701
2CDG120049R0011	TSA/K230.2 Thermoelectric Valve Drive, 230 V
2CKA006134A0346	SAR/A1.0.1-24 RT-control element
2CDG120050R0011	TSA/K24.2 Thermoelectric Valve Drive, 24 V
EAN:	4016779011525
Catalog Description:	FCC/S1.5.2.1 Fan Coil Controller, 2 x PWM, 0-10 V, Manual Operation, MDRC
Long Description:	For the control of fan coil units. Via two electronic outputs, two thermoelectric or one motor-driven valve drive can be controlled for heating and cooling. For the fan control the devices features an analog output for the control of a continues fan. A relay output switches an additional load of up to 16 A, such as auxiliary heating. Over 4 inputs the room status can be detected and monitored (Use for window contact, dew point sensor, level sensor or temperature sensor). Also it is possible to connect one analog room control unit (SAR/A or SAF/A) to the inputs of the device. The device has an integrated room temperature controller for the control of the room temperature, which can be used directly to control the outputs of the device. The FCC/S 1.5.2.1 features an easy to use manual operation. The device supports the ABB i-bus Tool for advanced diagnosis and improved commissioning.
Compatible Bus Systems:	KNX (TP)
Manipulated Variable:	Continious
Product Range:	KNX
Degree of Protection:	IP20
ETIM 9:	EC001586 – Heating actuator for bus system
WEEE B2C / B2B:	Business To Consumer
Identifier	Description
Environmental Degree of Protection	IP20
Degree of Protection	IP20
Mounting Type:	DIN-Rail

Applications

• Fan coil unit control in office buildings, hotels, and residential KNX automation systems requiring continuous 0-10 V fan control.
• Room climate management integration using window contacts, dew point sensors, and local control elements like SAR/A or SAF/A.

Installation Notes

• Mount the modular DIN-rail component (MDRC) inside an electrical distribution enclosure providing an IP20 rating environment.
• Wire the KNX TP bus connection and verify the 4 inputs and 4 outputs against product documentation 2CDG941188P0002 before energizing.
• Utilize manual operation controls or connect with the ABB i-bus Tool during commissioning for diagnostic checks and signal verification.

Developer Resources

• ABB i-bus Tool support for diagnostic analysis and commissioning.
• Instructions and Manuals reference: 2CDG941188P0002.
• CE Declaration of Conformity reference: 2CDK508229D2701.

FAQ

What types of valve drives can be connected to the ABB FCC/S1.5.2.1?

The device features two electronic outputs that can control either two thermoelectric valve drives (such as TSA/K230.2 or TSA/K24.2) or one motor-driven valve drive for heating and cooling applications. Explore more ABB automation devices for professional building automation projects.

How does fan control function on the FCC/S1.5.2.1?

The controller includes an analog output that provides continuous (0-10 V) control for stepless or continuous fan speed regulation. For certificates and current technical files, refer to the official product documentation.

What is the maximum current rating for the auxiliary switching output?

The integrated relay output can switch an additional electrical load, such as auxiliary electric heating, up to 16 A.

What can be connected to the 4 inputs?

The 4 inputs can be used to monitor room status via window contacts, dew point sensors, level sensors, or temperature sensors, or to connect an analog room control unit like the SAR/A or SAF/A.

What is the exact product model?

The order/model code for this page is FCC/S1.5.2.1. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by ABB.

Conclusion

The ABB FCC/S1.5.2.1 Fan Coil Controller (2CDG110235R0011) delivers a comprehensive KNX solution for fan coil climate regulation, combining continuous 0-10 V fan control, versatile valve output options, and a 16 A relay in a single MDRC unit. Installers and system integrators can review our KNX dealer program options.

With built-in manual operation, flexible sensor inputs, and support for the ABB i-bus Tool, system integrators gain a reliable, easily diagnosable controller tailored for modern building automation projects.