Danfoss VLT Series Design Manual page 70

3. VLT HVAC Selection
3.8.3. Digital inputs - Terminal X30/1-4
Parameters for set-up: 5-16, 5-17 and 5-18
Number of
digital in-
puts
3
3
3.8.4. Analog voltage inputs - Terminal X30/10-12
Parameters for set-up: 6-3*, 6-4* and 16-76
Number of analog voltage
inputs
2
3.8.5. Digital outputs - Terminal X30/5-7
Parameters for set-up: 5-32 and 5-33
Number of digital outputs
2
3.8.6. Analog outputs - Terminal X30/5+8
Parameters for set-up: 6-6* and 16-77
Number of analog outputs
1
70
Voltage Voltage levels
level
0-24 V PNP type:
DC Common = 0 V
Logic "0": Input < 5 V DC
Logic "0": Input > 10 V DC
NPN type:
Common = 24 V
Logic "0": Input > 19 V DC
Logic "0": Input < 14 V DC
Standardised in-
put signal
0-10 V DC
Output level
0 or 24 V DC
Output signal level Tolerance
0/4 - 20 mA
MG.11.B2.02 - VLT
Input impedance Max. load
Approx. 5 k ohm ± 28 V continuous
± 37 V in minimum 10
sec.
Input impedance Resolu-
tion
Approx. 5 K ohm 10 bits
Tolerance
± 4 V
± 0.1 mA
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is a registered Danfoss trademark
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VLT HVAC Drive Design Guide
Max. load
± 20 V continu-
ously
Max. load
≥ 600 ohm
Max. load
< 500 ohm