Control Input/Output And Control Data - Danfoss VLT Refrigeration Drive FC 103 Design Manual

Specifications

7.6 Control Input/Output and Control Data

Digital inputs
Programmable digital inputs
Terminal number
Logic
Voltage level
Voltage level, logic 0 PNP
Voltage level, logic 1 PNP
2)
Voltage level, logic 0 NPN
2)
Voltage level, logic 1 NPN
Maximum voltage on input
Pulse frequency range
(Duty cycle) Min. pulse width
Input resistance, R
i
Safe Torque Off (STO) Terminal 37
Voltage level
Voltage level, logic 0 PNP
Voltage level, logic 1 PNP
Maximum voltage on input
Typical input current at 24 V
Typical 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 torque off input terminal 37.
®
3) See VLT Frequency Converters – Safe Torque Off Operating Instructions for further information about terminal 37 and safe
torque off.
4) When using a contactor with a DC coil in combination with STO, always make a return path for the current from the coil
when turning it off. The return path can be made by using a freewheel diode (or, alternatively, a 30 V or 50 V MOV for quicker
response time) across the coil. Typical contactors can be bought with this diode.
MG16G202
Design Guide
3), 4)
(Terminal 37 is fixed PNP logic)
Danfoss A/S © 08/2015 All rights reserved.
1)
4 (6)
18, 19, 27 1) , 29 1) , 32, 33
PNP or NPN
0–24 V DC
<5 V DC
>10 V DC
>19 V DC
<14 V DC
28 V DC
0–110 kHz
4.5 ms
Approximately 4 kΩ
7
0–24 V DC
<4 V DC
>20 V DC
28 V DC
50 mA
rms
60 mA
rms
400 nF
123
7