Mitsubishi Heavy Industries HMK60, Installation Manual

Page: 56 / 288

54
AUX inputs
Up to 6 other external inputs are available on RC-HY40.
AUX1 through 3 correspond to the port 9/10, 11/12, 13/14
respectively on X6 terminal on AA3 board. AUX4 through 6
correspond to the port 1, 2 and 3 on X2 terminal on RC-HY40.
Port 4 on X2 terminal is GND and is common to AUX4
through 6. Connect a sensor or switch between AUX and GND
with a two-core cable with a minimum cross section of
0.5mm
2
.
AUX1
AUX2
AUX3
RC-HY40
AUX4 A
UX5
GND
A
UX6
AA3-X6
X2
Select the appropriate function in menu 5.4.
block heating
activate temp lux
not used
soft in/outputs 5.4
not used
not used
not used
■ Temperature sensor, external supply at additional heat before
reversing valve (BT63)
Temperature sensor BT63 is applied in case additional heater
is placed before 3-way valve (see page 26 for diagram)
The following functions are available. For details, see AUX
inputs for RC-HY20.
■ Temperature sensor, cooling/heating (BT74)
■ Temperature sensor, external return line (BT71)
■ Temperature sensor, fl ow line cooling (BT64)
■ Contact for external tariff blocking
■ Switch for “SG ready”
■Contact for activation of “temporary lux”
■Contact for activation of “external adjustment”
■Switch for external alarm
■Switch for external blocking
AUX outputs
External output is available on the port NC, NO and C on X7
terminal on AA3 board on RC-HY40. The relay output can
have a max load of 2A at resistive load.
SMO
Externt
6 5 4 3 2 1
1 0 PE
A1
A2
A1
A2
A1
-K1 -K2 -K3
A2
External
RC-HY 40
AA7-X2 X1
L N 1 1 0 2 3 4 PE
1 2 3 4
LEK
1 2 3 4
X1
1 1 N L 0 E P 2 3 4
-X2
1
12
34
56
2 3 4 5 6
-X1
AA7-X2
RC-HY40
Following functions are available. Select the function in menu
5.4.
Indication of buzzer alarm
When an alarm occurs, the circuit becomes closed between
the port NO and C. During normal operation, the port NC
and C is closed.
Cooling mode indication / Active cooling mode (4-pipe
cooling)
When the system turns into cooling mode, the circuit
becomes closed between the port NO and C. By using this
signal, it is possible to switch 3-way valve for 4-pipe cooling
or to assemble a display circuit indicating cooling mode. For
details of connecting the 3-way valve, refer to page 40 and
41
External pump control (GP10)
External pump (GP10) is used in case additional heater is
placed after 3-way valve that switches heating/hot water
(refer to page 27 and 28 for diagram).
Connect the circulation pump using the port NO and C on
X7 terminal on AA3 board as shown below.
C N O N C
Externt
SMO
L
PE
N
N
PE
L
External
RC-HY 40
AA3-X7
AA3-X7
RC-HY40