Pulse frequency range
0–110 kHz
(Duty cycle) Min. pulse width
4.5 ms
Input resistance, R
i
approx. 4 kΩ
Safe stop Terminal 37
3, 4)
(Terminal 37 is fixed PNP logic):
Voltage level
0–24V DC
Voltage level, logic'0' PNP
< 4V DC
Voltage level, logic'1' PNP
>20V DC
Maximum voltage on input
28V DC
Nominal input current at 24V
50mA rms
Nominal input current at 20V
60mA rms
Input capacitance
400nF
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)
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 PL d (ISO13849-1), SIL 2 (IEC 61508) and SILCL 2 (EN 62061) and implements a safe stop function in accordance with
Safe Torque Off (STO, EN 61800-5-2) and Stop Category 0 (EN 60204-1). Terminal 37 and the Safe Stop function are designed in
conformance with EN 60204-1, EN 61800-5-1, 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)
When using a contactor with a DC coil inside and in combination with safe stop, it is important to provide a return path for
the current from the coil when turning it off. This can be done by using a freewheel diode (or, alternatively, a 30 or 50 V MOV for
quicker response time) across the coil. Typical contactors can be bought with this diode.
Analog inputs:
Number of analog inputs
2
Terminal number
53, 54
Modes
Voltage or current
Mode select
Switch S201 and switch S202
Voltage mode
Switch S201/switch S202 = OFF (U)
Voltage level
FC 301: 0–+10/ FC 302: -10–+10 V (scaleable)
Input resistance, R
i
approx. 10 k
Ω
Max. voltage
±
20 V
Current mode
Switch S201/switch S202 = ON (I)
Current level
0/4 to 20 mA (scaleable)
Input resistance, R
i
approx. 200
Ω
Max. current
30 mA
Resolution for analog inputs
10 bit (+ sign)
Accuracy of analog inputs
Max. error 0.5% of full scale
Bandwidth
FC 301: 20 Hz/ FC 302: 100 Hz
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Mains
Functional
isolation
PELV isolation
Motor
DC-Bus
High
voltage
Control
+24V
RS485
18
37
130BA117.10
Specifications
VLT
®
AutomationDrive Instruction
Manual
10-12
MG.33.AI.22 - VLT
®
is a registered Danfoss trademark
10
10
