Danfoss VLT 2800 Design Guide

Control card, analog inputs
Number of analog voltage inputs 1 pcs.
Terminal number 53
Voltage level 0-10 V DC (scaleable)
Input resistance, R
i
approx. 10 kΩ
Maximum voltage 20 V
Number of analog current inputs 1 pics.
Terminal number 60
Current level 0/4-20 mA (scaleable)
Input resistance, R
i
approx. 300 Ω
Max. current 30 mA
Resolution for analog inputs 10 bit
Accuracy of analog inputs Max. error 1% of full scale
Scan interval 13.3 ms
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals. See
chapter 5.1.1 Galvanic Isolation (PELV) for further information.
Control card, pulse inputs
Number of programmable pulse inputs 1
Terminal number 33
Max. frequency at terminal 33 67.6 kHz (Push-pull)
Max. frequency at terminal 33 5 kHz (open collector)
Min. frequency at terminal 33 4 Hz
Voltage level 0-24 V DC (PNP positive logic)
Voltage level, logic '0' < 5 V DC
Voltage level, logic '1' > 10 V DC
Maximum voltage on input 28 V DC
Input resistance, R
i
approx. 2 kΩ
Scan interval 13.3 ms
Resolution 10-bit
Accuracy (100 Hz-1 kHz) terminal 33 Max. error: 0.5% of full scale
Accuracy (1 kHz-67.6 kHz) terminal 33 Max. error: 0.1% of full scale
The pulse input (terminal 33) is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals. See
chapter 5.1.1 Galvanic Isolation (PELV) for further information.
Control card, digital/frequency output
Number of programmable digital/pulse outputs 1 pcs.
Terminal number 46
Voltage level at digital/frequency output 0 - 24 V DC (O.C PNP)
Max. output current at digital/frequency output 25 mA.
Max. load at digital/frequency output 1 kΩ
Max. capacity at frequency output 10 nF
Minimum output frequency at frequency output 16 Hz
Maximum output frequency at frequency output 10 kHz
Accuracy on frequency output Max. error: 0.2% of full scale
Resolution on frequency output 10 bit
The digital output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals. See
chapter 5.1.1 Galvanic Isolation (PELV) for further information.
All about VLT 2800
Design Guide
142 Danfoss A/S © Rev. May/2014 All rights reserved. MG27E402
55

Danfoss VLT 2800 Specifications

General

Frequency	50/60 Hz
Enclosure	IP20
Input Voltage	200-240V AC
Output Power Range	0.37-2.2kW
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Communication Interface	RS485
Operating Temperature	-10°C to +40°C
Storage Temperature	-25°C to +65 °C
Relative Humidity	5 - 95% RH, non-condensing
Output Voltage	0 - 100% of supply voltage