Siemens TUTORbit POL945 User Manual

11
TUTORBIT
COSMOGAS
4.3 - Electrical connections
of POL955 expansion
The POL955 expansion is used to control only a heat pump.
For this purpose, various congurable inputs and outputs have
been provided (see detail in Figure 4-4), in order to adapt the
controller to most of the heat pumps on the market.
To properly communicate the expansion with the regulator, it
is always necessary to set logical address “5”, by positioning
the microswitches (Section 4.4).
The POL 955 expansion can be installed on a DIN rail and is
supplied with the terminals for the electrical connections and
the bayonet for the electrical connection to TutorBit.
Figura 4-4 - Electrical connections POL 955
Legend
Input/output description Corresponding terminals
on expansion POL955
Characteristics of the cables to be used
and maximum electrical absorption
37
Output 0-10V for heat pump
control
X1; M (1) Ø 1,5 mm
2
/ 20 m Max o 100 m shielded cable;
38
Alarm contact from the heat
pump
X3; M (1) Ø 1,5 mm
2
/ 20 m Max o 100 m shielded cable;
39
ON / OFF or “Cool” demand
heat pump
Q13; Q14 Ø 2,5 mm
2
/ 50 m Max / 3A Max;
40
“Heat”/”Cool” or “Heat”
domand heat pump
Q23; Q24 Ø 2,5 mm
2
/ 50 m Max / 3A Max;
41
DHW demand o double
setpoint
Q33; Q34 Ø 2,5 mm
2
/ 50 m Max / 3A Max;
ATTENTION !!! The terminals marked with (1), being subjected to very low safety voltage (24Vdc), must ow
in conduits other than 230Vac power supplies.

Siemens TUTORbit POL945 Specifications

General

Brand	Siemens
Model	TUTORbit POL945
Category	Controller
Language	English