Danfoss VLT Active Front End AFE 302 Operating Instructions Manual page 41

Specifications
3)
Safe stop Terminal 37 (Terminal 37 is fixed PNP logic)
Voltage level
Voltage level, logic'0' PNP
Voltage level, logic'1' PNP
Nominal input current at 24 V
Nominal input current at 20 V
Input capacitance
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.
2) Except safe stop input Terminal 37.
3) See for further information about terminal 37 and Safe Stop.
Analog inputs
Number of analog inputs
Terminal number
Modes
Mode select
Voltage mode
Voltage level
Input resistance, R
i
Max. voltage
Current mode
Current level
Input resistance, R
i
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.
Illustration 5.1 PELV Isolation of Analog Inputs
MG33X402
Operating Instructions
PELV isolation
+24 V
Control
18
High
voltage
37
Functional
isolation
RS-485
Danfoss A/S © Rev. 05/2014 All rights reserved.
Voltage or current
Switch S201 and switch S202
Switch S201/switch S202 = OFF (U)
-10 to +10 V (scaleable)
Switch S201/switch S202 = ON (I)
0/4 to 20 mA (scaleable)
Max. error 0.5% of full scale
Mains
DC-Bus
0-24 V DC
< 4 V DC
>20 V DC
50 mA rms
60 mA rms
400 nF
5 5
2
53, 54
approx. 10 kΩ
±20 V
approx. 200 Ω
30 mA
10 bit (+ sign)
100 Hz
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