Mitsubishi Electric AHU-KIT-SP Manual page 15

●Analog input circuit
・Compressor speed can be controlled by the analog input signal (0–10V / 4–20mA).
AHU interface converts 0–10V/4–20mA signal into the 0–100% range to understand how much capacity are required as a AHU.
Outdoor unit operates with the maximum compressor speed when 100% required capacity is used.
To use analog input function, make sure you enable the capacity control by configuring DIP SW7-4 as "OFF" (see 5 for more details).
① 0–10V Capacity Control (SW7-1: OFF and JX2 1-2 short)
0–10V signal is regarded as a required capacity of 0–100%.
Please note that there is a dead band in certain ranges.
(ex) When 0.5V is input, it would be regarded as 0% required capacity.
② 4–20mA Capacity Control (SW7-1: ON and JX2 2–3 short)
4–20mA signal is regarded as a required capacity of 0–100%.
Please note that there is a dead band in certain ranges.
(ex) When 0.9V is input, it would be regarded as 0% required capacity.
・The analog input signal: 0–10[V]/4–20[mA] controls the required capacity of the outdoor unit in the following range.
100
0
0 1
Analog input voltage [V]
●Digital input circuit
・ON/OFF can be recognised by the changing edge of the voltage to the digital input terminal.
・X2-5 is a common terminal.
When using X2-1 to X2-4, wire them together with X2-5.
・The functions of the digital input terminals are as follows.
Terminal Function ON
X2-1 Run/Stop Run
X2-2 Cooling/Heating Heating
X2-3 Emergency stop Emergency stop
X2-4 Reserve -
X2-5 Common
9.0 10
OFF
Stop
Cooling
Emergency stop release
-
100
0
0 4
Analog input current [mA]
Digital input：Example X2-2
X2 X2
5 4 3 2 1 5 4 3 2
AC DC
Power supply Power supply
AC24V-240V DC20V-130V
19.5 20
1
MODEL NAME
Air Handling Unit Interface
MODEL TYPE
AHU-KIT-SP
ISSUE CLASSIFICATION
SPECIFICATION
MORIKAWA
DWG NO.
PSZ000Z308
21.09.17
REV.MARK PAGE
15/38