Danfoss VLT Series Design Manual page 55

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VLT HVAC Drive Design Guide
* See Table 8.2 for more information!
Digital inputs:
Programmable digital inputs
Terminal number
Logic
Voltage level
Voltage level, logic'0' PNP
Voltage level, logic'1' PNP
Voltage level, logic '0' NPN
Voltage level, logic '1' NPN
Maximum voltage on input
Input resistance, R
All digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals.
1) Terminals 27 and 29 can also be programmed as output.
Analog inputs:
Number of analog inputs
Terminal number
Modes
Mode select
Voltage mode
Voltage level
Input resistance, R
Max. voltage
Current mode
Current level
Input resistance, R
Max. current
Resolution for analog inputs
Accuracy of analog inputs
Bandwidth
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals.
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MG.11.B2.02 - VLT is a registered Danfoss trademark
3. VLT HVAC Selection
18, 19, 27 1) , 29, 32, 33,
PNP or NPN
0 - 24 V DC
< 5 V DC
> 10 V DC
> 19 V DC
< 14 V DC
28 V DC
approx. 4 kΩ
Voltage or current
Switch S201 and switch S202
Switch S201/switch S202 = OFF (U)
: 0 to + 10 (scaleable)
approx. 10 kΩ
Switch S201/switch S202 = ON (I)
0/4 to 20 mA (scaleable)
approx. 200 Ω
10 bit (+ sign)
Max. error 0.5% of full scale
: 200 Hz
4 (6)
3
2
53, 54
± 20 V
30 mA
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