1 Analog I/O Option Mcb109; 1.1 Introduction; 1.1.1 Analog I/O Option Mcb 109 - Danfoss MCB109 Instruction

MCB109 Instruction

1 Analog I/O Option MCB109

1.1 Introduction

1.1.1 Analog I/O option MCB 109

The Analog I/O card is supposed to be used in e.g. the following cases:
• Providing battery back-up of clock function on control card
• As general extension of analog I/O selection available on control card, e.g. for multi-zone control with three pressure transmitters
• Turning frequency converter into de-central I/O block supporting Building Management System with inputs for sensors and outputs for operating
dampers and valve actuators
• Support Extended PID controllers with I/Os for set point inputs, transmitter/sensor inputs and outputs for actuators.
Illustration 1.1: Principle diagram for Analog I/O mounted in frequency converter.
Analog I/O configuration
3 x Analog Inputs, capable of handling following:
• 0 - 10 VDC
OR
• 0-20 mA (voltage input 0-10V) by mounting a 510Ω resistor across terminals (see NB!)
• 4-20 mA (voltage input 2-10V) by mounting a 510Ω resistor across terminals (see NB)
Ni1000 temperature sensor of 1000 Ω at 0° C. Specifications according to DIN43760
•
• Pt1000 temperature sensor of 1000 Ω at 0° C. Specifications according to IEC 60751
3 x Analog Outputs supplying 0-10 VDC.
MI.38.B2.02 - VLT ® is a registered Danfoss trademark
1 Analog I/O Option MCB109
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