Danfoss FC 300 Design Manual page 54

FC 300 Design Guide
An overload temperature cannot be reset
until the temperature of the heatsink is
below 70 °C ± 5°C (Guideline - these tem-
peratures may vary for different power
sizes, enclosures etc.).
• The frequency converter is protected
against short-circuits on motor terminals
U, V, W.
• If a mains phase is missing, the frequency
converter trips or issues a warning (de-
pending on the load).
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
i
Safe stop Terminal 37
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 termi-
nals.
1) Terminals 27 and 29 can also be programmed as output.
2) Except safe stop input Terminal 37.
3) Terminal 37 is only available in FC 302 and FC 301 A1 with Safe Stop. It can only be used as safe
stop input. Terminal 37 is suitable for category 3 installations according to EN 954-1 (safe stop according
to category 0 EN 60204-1) as required by the EU Machinery Directive 98/37/EC. Terminal 37 and the
Safe Stop function are designed in conformance with EN 60204-1, EN 50178, EN 61800-2, EN 61800-3,
and EN 954-1. For correct and safe use of the Safe Stop function follow the related information and
instructions in the Design Guide.
4) FC 302 and FC 301 A1with Safe Stop only.
54
FC 300 Selection
2)
2)
4) :Terminal 37 is fixed PNP logic
MG.33.B7.02 - VLT is a registered Danfoss trademark
• Monitoring of the intermediate circuit
voltage ensures that the frequency con-
verter trips if the intermediate circuit volt-
age is too low or too high.
• The frequency converter is protected
against earth faults on motor terminals U,
V, W.
FC 301: 4 (5) / FC 302: 4 (6)
18, 19, 27 1) , 29 4) , 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
0 - 24 V DC
< 4 V DC
>20 V DC
50 mA rms
60 mA rms
400 nF