Daikin RTD-10 User Manual

Standard Control: Resistance
In Resistance Control Mode the RTD-
10 Inputs allow individual control of
a/c unit operating parameters using
resistance values. Each input
corresponds to a specific unit setting
shown in the table below If an input is
left unconnected then the
corresponding setting will remain at
the default value.
S1 Setpoint 0..10kΏ : 16..32°C (22)
S2 Fanspeed Low<=1.1kΏ, High=2.2kΏ, HighHigh*=3.3kΏ
S3 Mode Auto<=1.1kΏ, Heat=2.2kΏ, Fan=3.3kΏ, Cool=4.7kΏ, Dry=6.8kΏ,
S4 Louvre Swing<=1.1kΏ, 0°=2.2kΏ, 20°=3.3kΏ, 70°=4.7kΏ, 90°=6.8kΏ,
S5 On/off On = Closed Circuit, Off = Open Circuit
S6 Unlock Lock All<=1.1kΏ, Lock Setpoint, Mode, On/Off= 2.2kΏ, Lock
Mode,On/Off=3.3kΏ, Lock On/Off=4.7Ώ, Local=6.8kΏ, Lock
Mode=9.6kΏ, Unlock>15kΏ
*HighHigh fanspeed operates if available, otherwise selects High fanspeed
S1 kΏ
0.3 0.9 1.5 2.1 2.6 3.2 3.8 4.4 5.0 5.6 6.2 6.8 7.4 7.9 8.5 9.1
9.7
R1 Run/
Defrost
Run: SW1.3 OFF : Closed when unit switched ON
Defrost: SW1.3 ON : Closed when unit in defrost
R2 Fault Closed on any unit fault
Caution: Relays rated for maximum 1A, 24VAC/30VDC
Resistances should be within +/-250 ohms of the quoted value. Open circuit is R>200kΩ.
S1 in resistance mode is designed to be operated using a linear 10kΩ variable resistance.
It is recommended that volt-free contacts or switch mechanisms have gold plated contacts to ensure a low
resistance circuit when the switch is made.
S1 to S6 cables should be 0.5 to 1.0 mm
2
multi-stranded screened twisted pair. The screen should be earthed
at one end only. The maximum distance from the RTD-10 to the input source is 200m.
Mounting
88.00
78.00
Ø 5.00
MOUNTING PILLARS
The RTD-10 is supplied with 4
mounting pillars that can be used to
mount the interface within units with
compatible mounting holes
SCREW MOUNTING
The RTD-10 can be mounted using
screws of up to 5mm diameter.
The RTD-10 can be mounted horizontally or vertically.
Power Supply
The RTD-10 requires a 15V to 24VDC power connection. Power can be
supplied from VRV indoor unit PCB X18A connection , a Skyair indoor unit
PCB X35A connection or VAM PCB X11A connection. A 1m cable and
connector is supplied with the RTD-10.
RTD-10 Description
The RTD-10 is a monitoring and control interface for Daikin VRV and Skyair
ranges of air-conditioners; and VAM and VKM ventilation units. The interface is
compatible with all units that have a P1,P2 remote controller network
connection and allows control of up to 16 units in a single group.
Control Functions
HARDWIRED CONTROL. Unit control can be achieved through resistance
inputs using resistor, potentiometer and volt-free contact inputs.
BMS INTEGRATION. Unit control can be achieved through 1-10V voltage
inputs integrated with BMS control outputs.
HEATING INTERLOCK. Units can be interlocked with external heating
systems.
DUTY/STANDBY. Multiple groups can be operated with rotating duty/standby
with fault and high temperature alarming.
MODBUS CONTROL. The RTD supports the Modbus Protocol for network
control and monitoring.
CUSTOM CONTROL. RTD interfaces can be supplied in custom configurations
to suit specific applications.
Warnings and Cautions
Do not exceed the specified fault relay ratings
Observe precautions for handling Electrostatic
Sensitive Devices
RTD-10 Control Interface v1.04
Installation and Operating Instructions
P1,P2 Network
Terminals P1, P2 connect to the Daikin P1, P2 network. P1,P2 installation
should follow Daikin installation specifications. The RTD-10 can operate in
Master or Slave mode with any Daikin remote controller. Operation is also
possible without a remote controller being connected. Note that infra-red
receivers must be configured to operate in slave mode.
The RTD-10 can be configured to operate in several different modes using the
configuration DIP switches SW1.1 to SW1.4. In Standard Control the following
combinations of modes are available:
Input
Mode
5 6 7 8
ON
1 2 3 4
Resistance
5 6 7 8
ON
1 2 3 4
Voltage
Relay R1
Output
5 6 7 8
ON
1 2 3 4
Unit Run
Unit Run
5 6 7 8
ON
1 2 3 4
Defrost
Operation
Setpoint
Limit
5 6 7 8
ON
1 2 3 4
No Limit
5 6 7 8
ON
1 2 3 4
Limit 19 to 23
S1
S2
S3 S4
S5
S60V 0V
S1
S2
S3
RESISTANCE MODE
S4
S5
S6
5 6 7 8
ON
1 2 3 4
Standard Control
Indoor Unit
Remote
Controller
(master)
P1 P2P1 P2P1 P2 P1 P2
upto 16 units
Indoor Unit
RTD
0V +V
POWER
15-24VDC
0V+V
X18A
VRV
Indoor
PCB
RED
BLUE
0V +V
POWER
15-24VDC
0V+V
X35A
Skyair
Indoor
PCB
RED
BLUE
100.00
100.00
22.00
1
J2
LED5 LED6
LED4LED3
LED1 LED2
SW1
All dimensions in mm
5 6 7 8
ON
1 2 3 4
S4
S5
S60VS1
S2
S30V
RS485 D-BUS
GND
R2
0 +
R1
0 +
0V +V
POWER
15-24VDC
DB
+
DA
-
REMCON
P1 P2
Daikin Control Interface
RTD-10

Daikin RTD-10 Specifications

General

Brand	Daikin
Model	RTD-10
Category	Recording Equipment
Language	English

Summary

RTD-10 Description

Control Functions

Details unit control capabilities via resistance, voltage, BMS, heating interlock, duty/standby, Modbus, and custom configurations.

Mounting

Mounting Methods

Covers installation via mounting pillars or screws, and orientation options for the RTD-10 unit.

Power Supply

Specifies the 15V to 24VDC power connection requirements from indoor unit PCBs for operation.

Standard Control

Resistance Control Mode

Details individual unit parameter control using resistance values for specific unit settings.

P1,P2 Network

Explains P1,P2 network connections for Daikin units, supporting Master/Slave operation and remote controller integration.

Warnings and Cautions

Safety Precautions

Provides essential warnings regarding fault relay ratings and handling electrostatic sensitive devices.

Standard Control: Voltage

Voltage Control Settings

Details individual unit parameter control using voltage signals for specific unit settings.

Heating System Interlock

Interlock Modes

Configures operation in Master or Slave mode to prevent conflicting cooling/heating operations with secondary systems.

Standard Control: Relay R1 Output

Relay R1 Configuration

Configures Relay R1 as a Run signal or a Defrost signal based on SW1.3 setting.

Standard Control: Setpoint Limit

Setpoint Limiting

Applies a setpoint limit (19-23 degrees) when SW1.4 is ON, affecting RC/Central Controller adjustments.

Standard Control: Remote Controller Unlock

Remote Controller Lock States

Configures remote controller button lock states via input S6, allowing various levels of control.

Duty/Standby Operation

Duty/Standby Configuration

Enables duty/standby operation for up to 8 groups, suitable for IT/Telecoms applications with rotation.

Alarm Operation

Details Level 1 and Level 2 alarm outputs (R1, R2) for temperature and unit faults, forcing units to run.

Override All On/Off

Explains how inputs S5 and S6 override unit operation to force all units ON or OFF respectively.

Auxiliary Space Sensor

Describes the use of a 10k NTC thermistor for monitoring space temperature and triggering alarms.

Duty/Standby Installation & Configuration

Covers networking, addressing, and DIP switch settings for Master/Slave duty/standby configurations.

RTD Networking

Addressing

Details the assignment of D-Bus addresses (SW1.5 to SW1.8) for creating control groups of up to 16 RTD-10 devices.

Network Installation

Specifies twisted pair cabling (DB, DA, GND) for RS485 D-Bus network installation, with length limitations.

Modbus Operation

Modbus Control

Enables control via Modbus register commands when input S6 is open-circuit, allowing analogue holding register updates.

Modbus Configuration

Details Modbus RTU Slave configuration parameters like Baud rate, Parity, and Stop bits.

Fault Codes

Explains encoding of fault codes using a standard table for Daikin fault code generation.

Keypad Lock

Describes how input S6 affects Modbus control over keypad locking, with different behaviors for locked/unlocked states.

VAM and VKM Unit Operation

Unit On/Off Control

Allows VAM and VKM units to be switched on/off using the RTD-10 On/off input.

LED Functionality

Details the meaning of LED indicators for Normal Operation, Error Conditions, and Unit Search status.

Unit Search

Explains the RTD-10's P1,P2 search mode upon power-up or communication loss.

Functional Specification

Electrical Specifications

Details electrical requirements including supply voltage, power consumption, and relay ratings.

Environmental Specifications

Outlines operating and storage temperature ranges, and humidity requirements.

Mechanical Specifications

Provides dimensions, weight, casing material, and connector details.