Analog I/O Option Mcb - Danfoss VLT AQUA Drive Design Manual

VLT ® AQUA Drive Design Guide
Terminal numbers:
Follow these steps:
1.
2.
3.
4.
5.
6.
When MCB 107, 24 V backup option is sup-
plying the control circuit, the internal 24 V
supply is automatically disconnected.
3.11: Connection to 24 V back-up supplier (A2-
A3).

3.7.9. Analog I/O option MCB 109

The Analog I/O card should be used for the following:
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Terminal 35: - external 24 V DC supply.
Terminal 36: + external 24 V DC supply.
Remove the LCP or blind cover.
Remove the terminal cover.
Remove the cable decoupling plate
and the plastic cover underneath.
Insert the 24 V DC backup external
supply option in the option slot.
Mount the cable decoupling plate.
Attach the terminal cover and the
LCP or blind cover.
Providing battery back-up of clock function on control card
As a general extension of analog I/O selection available on a control card, such as for
multi-zone control with three pressure transmitters.
Turning the adjustable frequency drive into a decentral I/O block supporting the Building
Management System with inputs for sensors and outputs for operating dampers and
valve switches.
Support Extended PID controllers with I/Os for set point inputs, transmitter/sensor in-
puts and outputs for switches.
MG.20.N2.22 - VLT ® is a registered Danfoss trademark.
3. VLT AQUA Selection
3.12: Connection to 24 V back-up supplier (A5-
C2).
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