Danfoss VLT HVAC Design Guide

3.1.2 General Purpose Input Output Module MCB 101
MCB 101 is used for extension of the number of digital and analog inputs
and outputs of the frequency converter.
Contents: MCB 101 must be fitted into slot B in the frequency converter.
• MCB 101 option module
•Extended LCP frame
• Terminal cover
Galvanic Isolation in the MCB 101
Digital/analog inputs are galvanically isolated from other inputs/outputs on the MCB 101 and in the control card of the frequency converter. Digital/analog
outputs in the MCB 101 are galvanically isolated from other inputs/outputs on the MCB 101, but not from these on the control card of the frequency
converter.
If the digital inputs 7, 8 or 9 are to be switched by use of the internal 24 V power supply (terminal 9) the connection between terminal 1 and 5 which is
illustrated in the drawing has to be established.
Illustration 3.1: Principle Diagram
3 VLT HVAC Drive Selection VLT
®
HVAC Drive Design Guide
52 MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
3

Danfoss VLT HVAC Specifications

General

Enclosure Rating	IP20, IP21, IP54, IP55, IP66
Storage Temperature Range	-25°C to +70°C
Output Voltage Range	0-100% of supply voltage
Communication Protocols	Modbus RTU, BACnet, Ethernet/IP, Profibus DP
Ambient Temperature Range	-10°C to +50°C (without derating)
Relative Humidity	5% to 95% non-condensing
Altitude	Up to 1000 m without derating
Cooling Method	Air cooled
Application	HVAC systems, Pumps, Fans, Compressors
Voltage Range	200-240 V, 380-500 V, 525-600 V
Frequency Range	0 Hz to 590 Hz