The Module System; Arrangement And Connection Of The Modules; Number Of Modules In The Protective Housing - INTEGRA Metering CALEC energy master Installation And Operating Instructions Manual

21 The module system

21.1

Arrangement and connection of the modules

Thanks to its modular design, the device is flexible and can be adapted to different requirements. The
units are fitted in the factory with the modules that were ordered. Additional modules can be retrofitted
in the field, or those not needed can be removed.
The diagram below shows the principle of the electrical connections and how the modules are ar-
ranged:
Supply
L 2
24 VDC
240 VAC 240 VAC
External power supply, e.g. 240 VAC
Internal power supply
The modules are electrically connected via lateral contacts for energy supply and signal exchange.
The modules for the power supply (Supply and Connect modules) only have contacts on the right
side, the CPU module only on the left, so they form the terminal modules of the internal connection.
The display module can be fitted on the front.
21.2

Number of modules in the protective housing

The number of modules in the protective housing is restricted to:
•
A maximum
•
Up to
6 modules, if at least one 2xPt100 input module is used.
52
1
of 7 modules or
CPU
R
®
CALEC energy master installation and operating instructions
L: Left terminal module, power
supply, electrical contacts
right-hand side
R: Right terminal module, CPU,
electrical contacts left-hand
side
1: Input, output or communica-
tions modules, electrical
contacts, both sides
2: Relay module 240 VAC,
electrical contacts both
sides