Toshiba RBC-FDP2-F-PE Interface

FDP2 Description

The FDP2-F is a monitoring and control interface for the Toshiba Digital Inverter, SHRM, and SMMS range of air-conditioners.

Fault Reporting

The FDP2-F Interface detects all indoor and outdoor faults occurring in TCC-NET compatible Toshiba air-conditioners and reports them by closing relay contacts R1-R2. The FDP2-F is connected on the TCC-NET network with or without a standard remote controller and detects any faults that can be displayed on the controller for up to 8 units. Red and Green LEDs indicate Fault/No Fault state.

Control Functions

• GROUP CONTROL: Multiple FDP2 Interfaces can be connected to form large groups of units controlled from a single remote controller.
• OPERATION PRESETS: Remote controller operation can be locked and various different preset run conditions can be sent from the FDP2.
• DUTY/STANDBY: Pairs of FDPs can operate duty/standby control with 24-hour alternating duty, and changeover on fault.
• HARDWIRED CONTROL: In conjunction with an FDP2-BMS unit, control can be achieved through potentiometer and volt-free contact inputs as well as via BMS integration.
• CUSTOM CONTROL: FDP2 interfaces can be supplied in custom configurations to suit specific applications.

Mounting

The FDP2 should be mounted using the keyhole mounting points as indicated in the adjacent diagram. The FDP can be mounted horizontally or vertically.

Diagram showing mounting points and dimensions.

Basic Cable Installation

Cabling should be a minimum 0.75mm² throughout. Terminals TCC-NET A/B connect to the Toshiba TCC-NET. TCC-NET installation should follow Toshiba installation specifications. Terminals R1-R2 connect to fault monitoring or indication equipment according to the specified rating of the relay. The FDP2 is powered from the TCC-NET and requires no extra power supply.

Diagram showing TCC-NET and relay connections.

LED Functionality

Diagram illustrating LED states for Normal Operation, Power-Up sequence, Factory Configuration, No Fault State, Unit Fault, and Custom Configuration.

Key:

• ○ OFF
• ● ON
• ◐ FLASHING

Normal Operation: Green LED ON.

Power-Up sequence: Green LED flashing.

Factory Configuration: Red LED ON.

No Fault State: Green LED ON.

Unit Fault: Red LED ON.

Custom Configuration: Green LED flashing.

TCC-NET Holdoff: After power-up and during unit configuration: Red and Green LEDs flashing.

Error Conditions

Diagram showing combinations of Red (R) and Green (G) LED states for various error conditions.

• Device configuration error: R ON, G OFF
• No unit master found on TCC-Net: R ON, G OFF
• D-BUS Communications timeout: R ON, G OFF
• Duplicate D-BUS Address detected: R ON, G OFF

Standard Operation

The FDP2 has a number of standard configurations that can be set using switches SW1 to SW7. Factory configuration is set with all switches OFF. In this mode, the FDP2 operates as a standard fault monitoring device. Additional preset modes are available using SW1 and SW2 to operate the system in preset Heat, Cool, and Auto modes*.

Diagrams illustrating fault monitoring with different preset modes:

• Fault Monitoring + Locked Cooling Preset
• Fault Monitoring + Locked Heating Preset
• Fault Monitoring + Locked Auto Preset

FDP2 Advanced Operation

ADDRESSING

The FDP2 has the facility to create control groups using multiple FDP2s connected together on the D-Bus network. In standard configuration, up to 16 FDP2 devices can be connected together. Each FDP2 is assigned a D-Bus address using the configuration switches SW4 to SW7. Unit addresses are shown below.

Diagrams showing switch settings for addresses 0 through 15.

Address 0 is the FDP2 MASTER address. Addresses 1 to 15 are FDP2 SLAVE addresses that can be used to create large control groups.

NETWORK INSTALLATION

The D-Bus network requires a twisted pair cable connecting terminals D1 and D2 on each FDP2. Terminal D1 must be connected to all other D1 terminals, and terminal D2 must be connected to all other D2 terminals. The common terminal C on all devices must be connected together. If a shielded cable is used, the shield can be used for this purpose. The network must be installed as a point-to-point BUS configuration; Star and Ring connections must NOT be used.

Diagram illustrating network installation with point-to-point BUS configuration.

SPECIFICATION

Use solid or stranded 24awg shielded or unshielded twisted pair to Cat3, Cat4, or Cat5 specification. Use a twisted pair for connections D1, D2 and an extra core for connection C.

NETWORK LENGTH

Standard installation for total network distances of up to 500m can be achieved following the basic daisy-chaining method shown in the above diagram. Network layout should follow a point-to-point connection; 'T' and star connections are not supported.

FDP2 Group Control

Group control allows up to 16 FDP2s to be connected on a D-Bus local network. Each FDP2 reports faults for the locally attached units. The FDP2 with address 0 is a MASTER and determines the settings for all systems connected to FDP2s addressed as slaves. The operating mode of the master is determined by SW1, SW2 as shown in the Standard Operation configuration instructions.

LOCAL CONTROL

With SW1 OFF and SW2 OFF, the MASTER FDP2 system operates under the control of the attached remote controller. SLAVE FDP2 devices will duplicate these settings to allow large groups to be controlled from one remote controller. Remote controllers on the slave FDP2s are locked and can be omitted if desired.

Diagram showing local control setup.

PRESET CONTROL

If the master is configured for Heat, Cool, or Auto preset control, then the FDP2 slave units will operate to the same settings as the master. The diagram below shows the system configured for the Cool preset. See overleaf for SW1, SW2 settings for Heat and Auto presets.

The MASTER FDP2 can be configured using SW1 and SW2 to operate using one of the three preset modes: Heat, Cool, or Auto. Alternatively, the MASTER can be configured for local control, in which case the remote controller attached to the MASTER FDP2 can be used to set the operating settings during master duty.

Diagram showing preset control setup.

FDP2 Duty/Standby Operation

Duty/Standby will alternately run two systems on a 24-hour alternating run/standby basis. If a fault occurs on either system, then both systems are switched on until the fault is cleared.

Duty/Standby is achieved using two FDP2 devices, one with Address 0 and one with Address 1, with a D-BUS connection between the two. SW3 must be switched ON on both devices to enable the operation.

Diagram illustrating Duty/Standby operation.

Functional Specification

Electrical

• Supply: 18V DC from TCC-NET
• Power: <1VA
• Relay: 1A, 24VAC max / 1A, 30VDC max

Environmental

• Temperature: Storage -10°C to 50°C, Operation 0°C to 50°C
• Humidity: 0-90% RH, non-condensing

Mechanical

• Protection: IP30
• Dimensions (mm): H72 x W87 x D19
• Mounting: Two keyhole mounting flanges
• Casing: Zinc coated mild steel
• Weight: 80g
• Connectors: Rising clamp to 0.75mm² cable

EMC

• Emissions: EN61000-6-1
• Immunity: EN61000-6-3

Advanced control

More sophisticated control can be achieved using the FDP2-BMS interface, which provides a number of inputs that allow external control of unit operation or connection to Building Management Systems. The FDP2 interfaces can also be customized for specific operating requirements. Contact Toshiba for details.

Warnings and Cautions

Do not exceed the specified fault relay ratings.