Danfoss VLT AutomationDrive FC 300 Instruction Manual page 84

Specifications
2)
Voltage level, logic '0' NPN
Voltage level, logic '1' NPN 2)
Maximum voltage on input
Pulse frequency ranges
(Duty cycle) Min. pulse width
Input resistance, R
i
Safe stop Terminal 37 3, 4) (Terminal 37 is fixed PNP logic)
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 stop input Terminal 37.
3)
See 2.4.5.8 Terminal 37 for further information about terminal 37 and Safe Stop.
4)
When using a contactor with a DC coil inside in combination with Safe Stop, 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 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
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.
Figure 10.1
VLT ® AutomationDrive Instruction
Manual
PELV isolation
+24V
Control
18
High
voltage
37
Functional
isolation
RS485
®
MG33AL22 - VLT is a registered Danfoss trademark
Switch S201 and switch S202
Switch S201/switch S202 = OFF (U)
FC 301: 0 to +10/FC 302: -10 to +10V (scaleable)
Switch S201/switch S202 = ON (I)
0/4 to 20 mA (scaleable)
Max. error 0.5% of full scale
FC 301: 20 Hz/FC 302: 100 Hz
Mains
Motor
DC-Bus
> 19 V DC
< 14 V DC
28 V DC
0–110 kHz
4.5 ms
approx. 4 kΩ
0–24 V DC
<4 V DC
>20 V DC
28 V DC
50 mA rms
60 mA rms
400 nF
2
53, 54
Voltage or current
10
approx. 10 kΩ
± 20 V
approx. 200 Ω
30 mA
10 bit (+ sign)
10-13
10