Danfoss VLT AutomationDrive FC 301 Operating Guide

8.5 Cable Specifications
8.5.1 Cable Lengths and Cross-sections for Control Cables
Maximum motor cable length, shielded
FC 301: 50 m (164 ft)/FC 302: 150 m (492 ft)
Maximum motor cable length, unshielded
FC 301: 75 m (246 ft)/FC 302: 300 m (984 ft)
Maximum cross-section to control terminals, flexible/rigid wire
without cable end sleeves
1.5 mm
2
/16 AWG
Maximum cross-section to control terminals, flexible wire with ca-
ble end sleeves
1 mm
2
/18 AWG
Maximum cross-section to control terminals, flexible wire with ca-
ble end sleeves with collar
0.5 mm
2
/20 AWG
Minimum cross-section to control terminals
0.25 mm
2
/24 AWG
For power cables, see Table 29 to Table 40
For power cables cross-sections, see 8.1.5 Power Cable Cross-sections.
8.6 Control Input/Output and Control Data
8.6.1 Digital Inputs
Programmable digital inputs
FC 301: 4 (5)
(1)
/FC 302: 4 (6)
(1)
Terminal number
18, 19, 27
(1)
, 29
(1)
, 32, 33
Logic
PNP or NPN
Voltage level
0–24 V DC
Voltage level, logic 0 PNP
<5 V DC
Voltage level, logic 1, PNP
>10 V DC
Voltage level, logic 0 NPN
(2)
>19 V DC
Voltage level, logic 1 NPN
(2)
<14 V DC
Maximum voltage on input
28 V DC
Pulse frequency range
0–110 kHz
(Duty cycle) minimum pulse width
4.5 ms
Input resistance, R
i
Approximately 4 kΩ
1
Terminals 27 and 29 can also be programmed as output.
2
Except STO input terminal 37.
8.6.2 STO Terminal 37 (Terminal 37 is Fixed PNP Logic)
Voltage level
0–24 V DC
Voltage level, logic 0 PNP
<4 V DC
Voltage level, logic 1 PNP
>20 V DC
Maximum voltage on input
28 V DC
Typical input current at 24 V
50 mA rms
Typical input current at 20 V
60 mA rms
Input capacitance
400 nF
All digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
See 4.7.1 Safe Torque Off (STO) for further information about terminal 37 and Safe Torque Off.
When using a contactor with a DC coil inside in combination with STO, it is important to make a return way for the current from the
coil when turning it off. This can be done 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.
AQ267037727118en-000101 / 130R030072 | Danfoss A/S © 2021.01
Specifications
VLT® AutomationDrive FC 301/FC 302
Operating Guide

Danfoss VLT AutomationDrive FC 301 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 301
Category	DC Drives
Language	English