DAB MCE-150/C Kurulum ve Bakım Talimatı - Sayfa 7

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5.5

Electrical Connections of Inputs and Outputs

The MCE-150/C has 3 digital inputs, 2 NTC inputs for fluid temperature measurement T and T1 an analogue input and 2 digital outputs

so as to be able to make certain interfaces with more complex installations.

Shown in Figure, Figure and Figure 6, for example, are some possible configurations of the inputs and outputs.

For the installer it will be sufficient to wire up the desired input and output contacts and to configure their functions as desired (see par.

5.5.1, par. 5.5. and par. 5.5.3).

5.5.1

The digital inputs are screen-printed at the base of the 18-pole terminal board:

I1: Terminals 16 and 17

I2: Terminals 15 and 16

I3: Terminals 13 and 14

I4: Terminals 12 and 13

The inputs may be powered with either direct or alternating current. Shown below are the electrical characteristics of the inputs (see

Table 3).

Minimum switch-on voltage [V]

Maximum switch-off voltage [V]

Maximum admissible voltage [V]

Current absorbed at 12V [mA]

Max. accepted cable section [mm²]

N.B. The inputs can be controlled with any polarity (positive or negative with respect to their earth connection)

Table 3: Electrical characteristics of the inputs

The example proposed in Figure 4 refers to the connection with a dry contact using the internal voltage to control the inputs.

ATTENTION: The voltage supplied between terminals 11 and 18 of J5 (18-pole terminal board) is 19 Vdc and may distribute maximum

50 mA.

If you have a voltage instead of a contact, it can still be used to control the inputs: it will be sufficient not to use the terminals +V and

GND and to connect the source of voltage to the desired input, respecting the characteristics described in Table 3.

ATTENTION: The pairs of inputs I1/I2 and I3/I4 have one pole in common for each pair.

ENGLISH

Figure 3: Connections

Electrical characteristics of the inputs

DC inputs [V]

3,3

AC inputs [Vrms]

1,5

3,3

2,13