Danfoss vlt FC 102 Programming Guide

3.24 Parameters: 26-** Analog I/O Option MCB 109
VLT
®
Analog I/O Option MCB 109 extends the functionality of VLT
®
HVAC Drive frequency converters, by adding a number of
additional, programmable analog inputs and outputs. This could be especially useful in building management system instal-
lations where the frequency converter may be used as de-central I/O, obviating the need for an outstation and thus
reducing cost.
130BA382.10
M
M
M
P T
T
T
H
Illustration 3.88 Analog I/O Option MCB 109
Analog I/O Carsd Control Card Power card
Room temperature Supply temperature Outdoor temperature Heating Coil Cooling coil Dampers or Heat recover Wheel
Humidier Duct Pressure Humidity sensor
Humidier steps
or
Cooling steps
RELAY1 RELAY2
1 2 3 10 11 124 5 6 7 8 9 12 13 18 19 27 29 32 33 20 37 39 42 50 53 54 55 01 02 03 04 05 06
130BA381.10
X42
AIN AIN AIN AOUT AOUT AOUT 24VDC 24VDC DIN DIN DIN/DOUT DIN/DOUT DIN DIN AOUT AIN AIN
Illustration 3.89 Analog I/O Option MCB 109
Illustration 3.88 a typical air handling unit (AHU). As can be seen, the addition of the analog I/O option oers the possibility
to control all of the functions from the frequency converter, such as inlet-, return- and exhaust dampers, or heating/cooling
coils with temperature and pressure measurements being read by the frequency converter.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
248 Danfoss A/S © 10/2019 All rights reserved. M0010001
33

Danfoss vlt FC 102 Specifications

General

Category	DC Drives
Model	Danfoss VLT FC 102
Output voltage range	0 to rated motor voltage
Power range	0.37 kW to 200 kW
Communication interfaces	RS-485
Protection features	Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection
Cooling method	Air-cooled
Enclosure rating	IP20, IP21, IP55 (depending on model)
Approvals	CE, UL, cUL