Toshiba Carrier MMD-AP0726HP-UL Manuel D'installation page 20

<Signal output terminal: TB1>
The following signal outputs are extracted from
"OUT1", "OUT2", and "OUT3".
It is possible to change the signal outputs with SW1,
SW2, and SW3.
* Always turn off the power to the indoor unit
before setting the signal outputs.
Note that even if you set the signal outputs, the
settings do not change if the power to the indoor
unit is ON.
<Connectable load>
30 VDC/1 A or less
TB1
SW1
External
K1
equipment
SW2
External
K2
equipment
SW3
External
K3
equipment
* Maximum wiring length is 1640'
(500m)
SW1, 2, and 3
Signal output
settings
0 No output (default)
Cool dry output or Secondary heating
1
output *1
2 Heat output
3 Defrost output
4 Fan output (indoor unit fan ON)
5 thermostat ON output
6 Ventilation output
7 Operation output
8 Alarm output
9 -
A Heater output
B Actual compressor on output
C Actual fan status output
D Filter sign output
E Demand response output
F Not used
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*1 DN [DC] : "0000" : Cool dry output
DN [DC] : "0001" : Secondary heating output
*2 Only signal output 3 (OUT3) can change relay (K3)
contacts from A contact to B contact by switching
the relay output reverse switch (SW4(bit 1)) from
OFF to ON.
• A contact: Relay is ON when there is signal
output
• B contact: Relay is OFF when there is signal
output
(Relay is ON when there is no signal output)
Always turn off the power to the air conditioner
before doing the settings because the SW4
settings also are not changed even if the settings
are changed while the power is ON.
<External digital input terminal: TB2>
The following controls can be done by inputting signals
to the external digital input terminal.
q IN1: External trouble input
The air conditioner system stops and check code "L30:
Indoor unit external interlock trouble" is displayed on
the wired remote control when an external trouble is
input.
q IN2: Prohibition of local input
is displayed on the wired remote control and
operations cannot be started or stopped from the wired
remote control during prohibition of local input.
It is also possible to release local prohibition from the
central remote control.
(Most recent input is given priority.)
q IN3: Not used
* Do the wiring as shown to the right for input of either
"Voltage ON: WET" or "Voltage OFF: DRY".
"Voltage OFF" input
Set the input switch (SW5) to the "Voltage OFF: DRY"
side.
(Factory default: Voltage OFF (DRY) side)
Use contacts for micro-currents.
(Use ones that have minimum
application loads of 12 VDC and
1 mA or less.)
12 V TB2
COM
Input 1
IN1
Input 2
IN2
Input 3
IN3
– 19 –
"Voltage ON" input
Set the input switch (SW5) to the "Voltage ON: WET"
side.
(Factory default: Voltage OFF (DRY) side)
Use 12 to 24 VDC for external power source.
Approximately 10 mA input current is required for each contact.
Be careful of the capacity of the power source.
(Do not apply 208/230 VAC)
Connect COM terminal to + side of the power supply.
Use contacts for micro-currents.
(Use ones that have minimum
application loads of 12 VDC
and 1 mA or less.)
TB2
12 to 24 VDC
+ V −
COM
Input 1
IN1
Input 2
IN2
Input 3
IN3
<Wiring speci cations>
Wire type: Sheathed vinyl cord, single strand
Wire thickness: AWG14 to AWG16 (prep 0.35" to 0.4"
(9 to 10mm) of the tips of wires)
Total wire length: Max 230' (70m)
* If you use twisted strand wires, connect a pin
terminator.
CAUTION
Separate power lines when wiring to prevent
misoperations.
<External analog input terminal: TB3>
It is possible to change the indoor unit's operation
mode (AN1), set temperature (AN2), and blower
setting (AN3) by connecting a variable resistor to the
analog input terminal.
* When both the wired remote control and the central
control are used, the most recent setting has priority.
TB3
AN1
AN2
AN3
COM
Variable resistance
Refer to the following table for
the various resistance settings.
Do not apply voltage or current to AN1, AN2, AN3,
or COM.
<Operation mode: AN1>
Operation switching External resistance ( )
Stop 30
Fan 60
Cool 90
Heat 120
<Set temperature: AN2>
Set temperature (°F / °C) External resistance ( )
62 / 17 10
64 / 18 20
66 / 19 30
68 / 20 40
69 / 21 50
71 / 22 60
73 / 23 70
75 / 24 80
77 / 25 90
78 / 26 100
80 / 27 110
82 / 28 120
84 / 29 130
86 / 30 140
<Blower setting: AN3>
Blower setting External resistance ( )
Auto 30
Fast 60
High 90
Low 120
<Wiring speci cations>
Wire type: Sheathed vinyl cord, single strand
Wire thickness: AWG14 to AWG16 (prep 0.35" to 0.4"
(9 to 10mm) of the tips of wires)
Total wire length: Max 230' (70m)
* If you use twisted strand wires, connect a pin
terminator.
CAUTION
Separate power lines when wiring to prevent
misoperations.
38-EN
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