VLT
®
2800 Series
All about VLT
2800
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 k
Max. voltage ............................................................................... ................................................................... 20 V
Number of analog current inputs .................................................................................................................. 1 pcs.
Terminal number ................................................................................................................................................ 60
Current level ...................................................................................................................... 0/4 - 20 mA (scaleable)
Input resistance, R
i
......................................................................................................................... approx. 300
Max. current ................................................................................................................................................ 30 mA
Reso lution for analog i nputs .......................................................................................................................... 10 bit
Accuracy of analog inputs ............................................................................................ Max. error 1% of full scale
Scan interva l .......................................................................................................................................... 13.3 msec
The analog inputs are galv anical ly isolated from the supply voltage (PELV) and other high-
voltage terminals. See section entitled Galvanic Isolation.
Control card, pulse inputs:
Number of programm able 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 l evel, logic ’0’ .............................................................................................................................. < 5VDC
Voltage l evel, logic ’1’ ............................................................................................................................ > 10 VDC
Maximum voltage on input ....................................................................................................................... 28 V DC
Input resistance, R
i
.......................................................................................................................... approx. 2 k
Scan interva l .......................................................................................................................................... 13.3 msec
Reso lution ...................................................................................................................................................... 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 section entitled Galvanic Isolation.
Control card, digital/frequency output:
Number of programm able digital/pulse outputs .......................................................................................... 1 pcs.
Terminal number ................................................................................................................................................ 46
Voltage l evel 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 k
Max. capacity at frequency output .............................................................................................................. 10 nF
Minim um 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
Reso lution on frequency output ..................................................................................................................... 10 bit
The digital output is galvanic ally isolated from the supply voltage (PELV) and other high-
voltage terminals. See section entitled Galvanic Isolation.
MG.28.E9.02 - VLT is a registered Danfoss trademark
147
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