The Cpu Module 2 X Pt100; Function And Connections; Settings - INTEGRA Metering CALEC energy master Installation And Operating Instructions Manual

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22.2

The CPU module 2 x Pt100

The CPU module with the central processor for the calculating, control and memory functions has the

following features:

• Real-time clock with buffer battery for mains-independent time display

• IrDA-interface with M-Bus protocol for reading and parameter setting

• Two Pt100-inputs for temperature measurement with 2, 3 or 4-wire connections. EEPROM for se-

cure data storage

• Communication with the modules via the internal bus. Automatic module recognition

• Communication with the display module

• Non-reactive plug-in connection for the display module. The display module can be fitted on the

CPU module or mounted in split version with the remote display adapter set.

All device parameters are stored in the CPU module. Depending on the application and module as-

sembly, this comprises the following settings:

• Application and calculator function for one to three calculators

• Units and resolution of the meter readings and current values

• Assignment of the input signals (assignment table, e.g. Q1 = Input 1, Th = Pt100 Input 1, Tc =

Pt100 Input 2 )

• Specification of the output variables for the output signals

• Setting of the input and output signals (e.g. pulse value, Pt100 hot side, Pt100 cold side )

• Other settings such as date, time, memory functions, output functions, interface parameters etc.

The procedure to be followed for commissioning or changing settings is described in the chapters on

operation and commissioning.

Signal and terminal assignments:

Upper terminals (5 - 1 - 2 - 6):

Pt100-input 1

Temperature hot side

Lower terminals (7 - 3 - 4 - 8):

Pt100-input 2

Temperature cold side

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