Example Of Wiring Diagram (Heat Cool Control) - ascon M3 Series User Manual

2 - Electrical connections

2.3 EXAMPLE OF WIRING DIAGRAM (HEAT COOL CONTROL)

Power supply
~
V
Power supply
switch
[3]
Cooling
~
V
Fuse
[5]
Fuse
[5]
[6]
TC
CT Current transformer 50 mA
~
V
Heating
10
Supervision Retransmission
RS485
0P4
RX/TX
4...20mA
PTC [4]
1 7
~
V
2 8
3 9
18V
OP1
4 10
OP2
5 11
6 12
Notes:
1] Make sure that the power supply
voltage is the same indicated on
the instrument.
2] Switch on the power supply only
after that all the electrical con-
nections have been completed.
3] In accordance with the safety reg-
ulations, the power supply switch
shall bring the identification of the
relevant instrument. The power
supply switch shall be easily
accessible from the operator.
4] The instrument is is PTC pro-
13
tected. In case of failure it is sug-
OP3
[6]
gested to return the instrument to
14
the manufacturer for repair.
~
Fuse 2A T
5] To protect the instrument internal
15
~
circuits use:
[6]
OP2 V
16 - 2 A
- 1 A
Allarm
17
6] Relay contacts are already pro-
tected with varistors.
18
Only in case of 24 V
tive loads, use model A51-065-
30D7 varistors (on request)
B
~
T fuses for Relay outputs
~
T fuses for Triac outputs
~
induc-