Daikin RTD-10 Installation And Operating Instructions page 2

Standard Control: Voltage
In Voltage Control Mode the RTD-10
Inputs allow individual control of a/c S1
unit operating parameters using
voltages. Each input corresponds to a
specific unit setting shown in the
0V S1
table below If an input is left
unconnected or is set to 0 Volts then
the corresponding setting will remain
at the default value.
Input Name Range (default / 0V value)
S1 Setpoint 1..10V : 16..32°C (22)
S2 Fanspeed Low=1.75V, High=3.25V, HighHigh*=4.75V
S3 Mode Auto=1.75V, Heat=3.25V, Fan=4.75V, Cool=6.25V, Dry=7.75V,
S4 Louvre Swing=1.75V, 0°=3.25V, 20°=4.75V, 70°=6.25V, 90°=7.75V,
S5 On/off On >=5V, Off = 0V
S6 Unlock Lock All=1.75V, Lock Setpoint, Mode, On/Off=3.25V,
Lock Mode, On/Off=4.75V, Lock On/Off=6.25V,
Local=7.75V, Lock Mode=9.25V, Unlock=10.0V
*HighHigh fanspeed operates if available, otherwise selects High fanspeed
Output Name Operation
R1 Run/ Run: SW1.3 OFF : Closed when unit switched ON
Defrost Defrost: SW1.3 ON : Closed when unit in defrost
R2 Fault Closed on any unit fault
Caution: Relays rated for maximum 1A, 24VAC/30VDC
Voltages should be within +/- 0.25V of the quoted value. Open circuit for V<1V.
Standard Control: Relay R1 Output
SW1.3 configures Relay R1 as either a Run signal that closes when the unit is
enabled to run, or a Defrost signal that indicates when the unit is in Defrost.
Standard Control: Setpoint Limit
If SW1.4 is ON then a setpoint limit of 19 to 23 degrees is applied to setpoint
adjustments made from the Remote Controller or Central Controller. Setpoint
Limiting only applies when the setpoint buttons are unlocked and the keypad
Unlock input S6 is NOT set to Local. The setpoint limits are not applies to
setpoint control from input S1 or adjustment via Modbus commands.
Standard Control: Remote Controller Unlock
Input S6 in Voltage or Resistance mode can configure the unlock state of the
Remote Controller buttons. The default state is Unlock, in this state the
Remote Controller buttons are all active and no lock symbol appears on the
display. Updates from inputs S1 to S5 are only sent when the input changes so
that users can still operate the A/C. Setting S6 to Locked locks all input
buttons and updates from the inputs S1 to S5 will control the operation of the
A/C. Several partial Lock states allow combinations of the Setpoint, Mode and
On/Off buttons to be locked so that the user has partial control of the unit.
Setting S6 to Local unlocks all remote controller buttons and prevents any
control updates from inputs S1 to S5.
Heating System Interlock
S3 S6
The RTD-10 can be configured to operate in Heating System Interlock mode
S2 S5
to prevent A/C cooling or heating operation from conflicting with the operation
S4
of an additional system. The RTD-10 can be wired to operate either in Master
mode in which the RTD-10 determines when the secondary system operates,
or Slave mode in which the secondary system will inhibit the RTD-10 operation.
S2 S3 0V S4 S5 S6
Inputs are the same as Resistance Control Mode, with input S4 changed to act
as an operation inhibit input signal. Closed circuit inputs on S1 to S3 select
additional functions and override the default behaviour of the input.
ON
1 2 3 4 5 6 7 8
Input Name
VOLTAGE MODE
S1 Setpoint
S2 Fanspeed
S3 Mode
S4 Inhibit
S5 On/off
S6 Unlock
*HighHigh fanspeed operates if available, otherwise selects High fanspeed
Output Name
R1 Mode
Interlock
R2 Fault
Caution: Relays rated for maximum 1A, 24VAC/30VDC
INTERLOCK MASTER MODE
To operate the RTD-10 in Interlock Master Mode the relay output R1 is wired
as an input to the secondary system. With SW1.3 OFF R1 will close when the
unit is On and in a cooling mode. With SW1.3 ON R1 will close when the unit is
On and in a heating mode. If the unit is in fault then R1 will not operate.
Heating Interlock: Master
Heating Interlock: Master
Range (default)
0.3..10kΏ : 16..32°C (22)
Restart Inhibit = Closed Circuit
(Setpoint Control not available)
Low=1.1kΏ, High=2.2kΏ, HighHigh*=3.3kΏ
Invert S4 Input = Closed Circuit
(Fanspeed Control not available)
Auto=1.1kΏ, Heat=2.2kΏ, Fan=3.3kΏ, Cool=4.7kΏ, Dry=6.8kΏ,
Heat/Cool Mode Inhibit = Closed Circuit
(Mode Control not available)
Inhibit=Closed Circuit, Enable = Open Circuit
On = Closed Circuit, Off = Open Circuit
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
Operation
SW1.3 OFF: Closed if Mode Auto:Cool, Cool or Dry + Unit On
SW1.3 ON: Closed if Mode Auto:Heat or Heat + Unit On
Closed on any unit fault
R1
Mode Heating System Inhibit
Interlock
Relay Closed = Unit ON + No Fault
+ Mode = Auto:Cool, Cool or Dry
ON
1 2 3 4 5 6 7 8
R1
Mode Cooling System Inhibit
Interlock
Relay Closed = Unit ON + No Fault
+ Mode = Auto:Heat or Heat
ON
1 2 3 4 5 6 7 8
INTERLOCK SLAVE MODE
To operate in slave mode the input S4 operates as a Volt-free inhibit input.
When the inhibit signal is closed circuit the RTD-10 will prevent the A/C unit
from operating. Input S4 operation can be inverted by inserting a Short Circuit
on input S2.
The RTD-10 can be configured using switch SW1.4 to switch the A/C units
OFF during the inhibit or to switch the units to FAN-ONLY or Mode Inhibit. The
inhibit signal overrides on/off commands both from the Remote Controller as
well as input S5. If A/C Fan-Only mode is selected then the unit will remain on
and the unit mode will be switched to Fan-only and locked. If Mode Prohibit is
selected then the Mode will be prevented from operating in Auto and Heat if
Heating Inhibit is selected (SW1.3 OFF), and will be prevented from operating
in Auto, Cool and Dry if Cooling Prohibit is selected (SW1.3 ON).
Run Interlock: Slave
S4
A/C Inhibit
Inhibit
0V S1 S2 S3 Relay Closed = Inhibit A/C
Relay Open = Inhibit A/C
0V S1 S2 S3
Fan-Only Interlock: Slave
S4
A/C Inhibit
Inhibit
0V S1 S2 S3 Relay Closed = Inhibit A/C
0V S1 S2 S3 Relay Open = Inhibit A/C
Heat/Cool Interlock: Slave
S4
A/C Inhibit
Inhibit
0V S1 S2 S3 Relay Closed = Inhibit A/C
Relay Open = Inhibit A/C
0V S1 S2 S3
Heat ON
Fan Dry
Prohibit
1 2 3 4 5 6 7 8
Cool
ON
Fan Dry
Prohibit
1 2 3 4 5 6 7 8
When the inhibit signal is removed the RTD-10 will restore the previous
operating state of units. If input S1 is Short Circuited then the previous settings
will not be restored when the interlock is removed.
0V S1 S2 S3
A/C
OFF
ON
1 2 3 4 5 6 7 8
0V S1 S2 S3
A/C
FAN-ONLY
ON
1 2 3 4 5 6 7 8
0V S1 S2 S3
Mode
Prohibit
ON
1 2 3 4 5 6 7 8
Auto Cool Heat
Auto Cool Heat