Control card, digital inputs:
Number of programmable digital inputs
5
Terminal number
18, 19, 27, 29, 33
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
(terminals 18, 19, 27, 29)
approx. 4 k
Ω
Input resistance, R
i
(terminal 33)
approx. 2 k
Ω
All digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals. See section entitled Galvanic Isolation in the Operating Instructions.
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
Ω
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
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 msec
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals. See section entitled Galvanic Isolation in the Operating Instructions.
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 k
Ω
Scan interval
13.3 msec
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 section entitled Galvanic Isolation in the Operating Instructions.
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 k
Ω
Max. capacity at frequency output
10 nF
Minimum output frequency at frequency output
16 Hz
Maximum output frequency at frequency output
10 kHz
1 Quick Guide
VLT 2800 Quick Guide
30
MG.28.M1.02 - VLT
®
is a registered Danfoss trademark
1
