Mitsubishi Electric PAC-IF031B-E Installation Manual page 9

4. Electrical work
4.3. Connecting external input
FTC2 can be operated by following external input.
4.3.1. EXTERNAL INPUT ( Contact signal )
Terminal block
TB142 1-2 (IN1)
TB142 3-4 (IN2)
TB142 5-6 (IN3)
TB142 7-8 (IN4)
TB142 10-11 (COM-IN5)
TB142 10-12 (COM-IN6)
TB142 10-13 (COM-IN7)
TB142 10-14 (COM-IN8)
TB62 1-2 (Ana. IN1)
*1 Heating ECO mode sets the set temperature depending on the outdoor temperature.
*2 In case of Cooling, Heating, Heating ECO and Anti-Freeze.
*3 Input signal: Pulse
Pulse specifi cations: ON (short)
OFF (open)
*4 When SW1-8 is OFF, the mode is switched into Auto hot water.
Input signal: Pulse
Pulse specifi cations: ON (short)
OFF (open)
When SW1-8 is ON, the mode is switched into Hot water.
4.3.2. EXTERNAL INPUT ( analog signal ) 4-20mA / 1-5V / 0-10V
Connect the transmission cables to No. 3 and 4 on the terminal block (TB62).
No. 3 on the terminal block (TB62) : Plus side
No. 4 on the terminal block (TB62) : Minus side (Reference side)
4-20mA / 1-5V / 0-10V setting
FLOW TEMP.
No.2 Temp.
No.1 Temp.
Stop
4-20mA
0mA -- 4mA --------------- 20mA
1-5V 0V -------1V------------------- 5V
0-10V 0V ------------------10V
Refer to the section 10 for details about No1, 2 Temp.
Caution:
The external input signals are separated by basic insulation from power supply for the unit.
The external input signals should be separated by supplementary insulation from where user may touch in case that it is installed where
user may touch.
Connect the terminals by using the ring terminals and also insulate the cables of adjoining terminals when wiring to terminal block.
4.3.3. Wiring specifi cation of External input
Locally supplied parts
Item Name
External input External input signal
function wire
Switch
RG79D525H01_EN.indd 9 RG79D525H01_EN.indd 9
OFF (Open) ON (Short)
OFF Emergency
OFF Legionella prevention *3
Normal Comp. OFF
Comp. OFF Normal
OFF Cooling
OFF Heating
OFF Heating ECO *1
OFF Hot Water *4
OFF Anti-Freeze
Normal operation Comp. OFF *2
Comp. OFF *2 Normal operation
200ms or more
200ms or more
ANALOG
SIGNAL
Model and specifi cations
Use sheathed vinyl coated cord or cable.
Max. 10m
Wire type :CV, CVS or equivalent
2
Wire size : Stranded wire 0.5mm
Solid wire : {0.65mm to {1.2mm
Non-voltage "a" contact signals
Remote switch : minimum applicable load DC 12V, 1mA
TB142
2
Remark
1 3 5
SW3-6 = OFF
SW3-6 = ON
Emergency
Legionella prevention
SW3-4 = OFF
Forced Comp. OFF →
SW3-4 = ON
Cooling
Heating
HeatingECO →
Hot Water
Anti-Freeze →
Wired remote controller
TB141
2
to 1.25mm
4 6 8 10 12 14
7 9 11 13
FTC2
At site
1
→
2
3
→
4
5
6
7
→
8
9
10
→
11
12
→
13
14
TB142
At site FTC2
1
(
Thermostat
2
3 +
(
4-20mA/1-5V/0-10V
4
5
(
6
TB62
Photo.4-4
2009/04/10 9:24:33 2009/04/10 9:24:33
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