19
Heez +050002745 rel. 1.2 - 16.11.2021
ENG
•
before carrying out any maintenance, disconnect the controller from the power supply by moving the main
system switch to “off”. Once having powered down the controller, wait at least 5 minutes before disconnecting
the electrical cables;
•
always make sure that the compressor has stopped completely. Freely rotating motors may generate dangerous
voltages across the terminals on Heez, even when this is not powered;
•
the controller does not feature protection against short-circuits to earth; suitable devices must be used to detect
faults upstream of the circuit.
Description of t
h
e terminals
50002745
_
00
1_
R0
1
7
6
5
4
3
1
2
U
V
W
L
N
J
13
C3 NO3
J
2
J
1
J7
J6
J
5
J
4
J
3
J
10
J
11
J
12
C
1
/2 NO2 NO
1
J9
J8
J
14
11
1
4
1
0
1
3
1
2
8
9
Fig. 3.m
R
ef.
C
onnector
D
escription
1
J1
L, N
Single-phase power supply (see the Technical specifications)
Earth (*)
2
Earth (*)
U, V, W
Compressor output
3
J3 (**)
Condenser fan (DC)
4
J4 (**)
Evaporator fan (type _X_)
50002730_01
9
_R01
1 2 3 4 5
6 7
J
3 /
J
4
1
Vdc
2
Reserved
3
Reserved
4
GND
5
Vdc
6
VSP - set point output
7
FG - tachometer input
5
J5
Reserved
6
J6
Safety digital input (Safety Torque Off (***))
7
J7
Fieldbus
8
J8 HMI
User terminal connector
9
J9
BMS connector
