Carel plug-in Installation Manual download pdf (Page 10)

plug-in

Cod. +030220291 – rel. 1.3 dated 28/03/06

2. Hardware architecture

The PJ32V/W/Z series instruments are temperature controllers that

can be used for the control of refrigeration, air-conditioning and

heating units.

An application diagram is shown in the figure; this also indicates

the possible accessories and expansions, as well as the connections

for the inputs and outputs:

1. instrument;

2. plug-in frame;

3. temperature probes;

4. power supply transformer (models 12 Vac);

5. parameter programming key (only for the TOP models).

This manual only describes the characteristics of the instrument,

with a brief mention of the accessories and expansions.

2.1 Meaning of the inputs and outputs

DESCRIPTION (numbering of the terminals refers to Fig. 2.1)

POWER SUPPLY

Terminals 8 and 9; the value of the power supply may be 230 Vac, 115 Vac or 12 Vac/Vdc. The effective

value is indicated on the connection label.

TEMPERATURE

PROBES

Terminals 5 and 6 are necessary for the connection of the temperature probe 1.

Terminals 6 and 7 are necessary for the connection of the temperature probe 2, when featured.

DIGITAL INPUT

Terminals 6 and 7 are for the digital input from free contact, when featured

RELAY OUTPUTS

The group of terminals numbered 1, 2, 3, 4 are for the connection of the relay outputs.

The assignment of the outputs can change according to the code , the effective assignment is indicated on

the connection label.

- For instrument codes with one relay only, the changeover contact is available for actuator control, using

terminals 1, 2, 3.

- For instrument codes with two relays, the changeover contact is available for "out2", on terminals 1, 2,

3, and the closing contact for the relay "out1" on terminals 3 and 4. Terminal 3 is common for the two

relays, thus the current at the terminal will be the sum of the two.

- For instrument codes with three relays, terminal 1 is used for "out1", terminal 3 for "out2", terminal 4

for "signalling" and terminal 2 is the common of all three relays. Note: The current at terminal two will

be the sum of the three outputs.

COPY KEY

CONNECTION

The four-pin connector is for connecting the parameter copy key. This connection is not present on the

Eco models

Table. 2.1.1

2.2 Instrument and accessory codes

The definition of the instrument codes is based on two categories: one for the simpler and more economical versions (Eco), and

one for the versions complete with all functions (Top). The Top versions have the following additional features:

• removable terminals in the place of fixed terminals;

• fastening from front panel using screws;

• serial connector present, with the possibility to connect expansion modules and to the key.

Warning: the options indicated are not all freely modular

The front panel frame is supplied in grey (standard for the single instrument), it can be customised in terms of colour and text, and

can thus be ordered separately or in a kit.

1-2-3-4 5-6-7 8-9

OUT 1

OUT 2

ALARM

230/12

Alim.

230 Vac

Power Supply

230 Vac

Alim.

230 Vac

115 Vac

Power Supply

230 Vac

115 Vac

Fig. 2.1.1

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 35 36

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Carel plug-in Installation Manual Page 10

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