US FLOOR / FLOOR
Minichiller inverter Duo
25
7.7.1.1
Terminal block connections
For getting information on the legend and location of the terminal blocks in the electric box, please see the wiring diagrams in the
Chapter 30.
Power supply terminal block
Single phase system 1-Ph_ N +PE
Power supply board
Three-phase system 3-Ph _ N +PE
Terminal
block
Terminal Description
Terminal
block
Terminal Description
M1
PE Grounding
conductor
M1
PE Grounding
conductor
L
Phase conductor
L1
Phase conductor 1
N
Neutral conductor
L2
Phase conductor 2
L3
Phase conductor 3
N Neutral
conductor
Terminal block Auxiliary Board – AB – Indoor unit
Jumper Terminal
Description
CN3
HP+
4-20mA ST5 analog input
HP- GND
reference
signals
LP+
4-20mA ST6 analog input
LP- GND
reference
signals
DT
ST4 analog input / ID5 digital input
CN4
PWM 1 / 0-10V 1
Analog output 1
CN5
PWM 2 / 0-10V 2
Analog output 2
CN7
12V
Power supply 12Vac
AI10
Ratiometric 0-10V analog input
+5V
Power supply for ratiometric
CN8
AI1
ST3 analog input/ ID4 digital input
AI2
ST2 analog input
AI3
ST1 analog input
AI4
ST9 analog input / ID8 digital input
CN8
AD1
ST7 analog input/ ID6 digital input
AD2
ST8 analog input/ ID7 digital input
DI1
ID1 digital input
DI2
ID2 digital input
DI3
ID3 digital input
CN10
L Single-phase
230Vac
N NU
DO1
DO1 digital output (single-phase 230Vac)
DO2
DO2 digital output(single-phase 230Vac)
DO3
DO3 digital output (single-phase 230Vac)
DO4
DO4 digital output (single phase 230Vac)
DO5 Phase
230Vac
DO5
Digital output DO5 (Phase 230Vac)
CN12
NC1
Digital output DO6 (Phase 230Vac)
Normally Closed Changeover Contact
C1 Phase
230Vac
NO1
DO6 digital output (Phase 230Vac)
Normally Open Changeover Contact
I+ / I-
Modbus Inverter
Connection for communication with outdoor unit
GND
GND reference signals
(Modbus reference mass for connection to outdoor unit)
R+ / R-
Modbus Master
Modbus signal connection for communication with PC or the Evo Touch
(unscheduled) accessory
E+ / E-
Modbus Slave
Connection with outdoor unit and GI2
CN14
NC2
DO7 digital output (Phase 230Vac)
Normally closed changeover contact
C1 Phase
230Vac
NO2
Digital output DO7 (Phase 230Vac)
Normally Open changerover contact
For connecting the terminals I-, I+ and GNDR, t’s recommend to use a shielded twisted-pair multipolar cable 5x0.75mm
2
.