Danfoss VLT FC 102 Operating Instructions Manual page 55

Specifications
2) Except Safe Torque Off input Terminal 37.
3) See for further information about terminal 37 and Safe Torque Off.
4)
When using a contactor with a DC coil inside in combination with Safe Torque Off , 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.
+24V
Control
18
37
Functional
isolation
RS485
Illustration 8.1 PELV Isolation
Pulse
Programmable pulse
Terminal number pulse
Max. frequency at terminal 29, 33
Max. frequency at terminal 29, 33
Min. frequency at terminal 29, 33
Voltage level
Maximum voltage on input
Input resistance, R
i
Pulse input accuracy (0.1-1 kHz)
Encoder input accuracy (1-11 kHz)
The pulse and encoder inputs (terminals 29, 32, 33) are galvanically isolated from the supply voltage (PELV) and other high-
voltage terminals.
1)
FC 302 only
2) Pulse inputs are 29 and 33
Analog output
Number of programmable analog outputs
Terminal number
Current range at analog output
®
VLT HVAC Drive Operating Instructions
PELV isolation
Mains
High
Motor
voltage
DC-Bus
MG11AJ02 - Rev. 2013-07-31
53, 54
Voltage or current
Switch S201 and switch S202
Switch S201/switch S202 = OFF (U)
-10 to +10 V (scalable)
approx. 10 kΩ
±20 V
Switch S201/switch S202 = ON (I)
0/4 to 20 mA (scalable)
approx. 200 Ω
30 mA
10 bit (+ sign)
Max. error 0.5% of full scale
20 Hz/100 Hz
1) 2)
29 , 33
110 kHz (Push-pull driven)
5 kHz (open collector)
see 8.6.1 Digital Inputs
28 V DC
approx. 4 kΩ
Max. error: 0.1% of full scale
Max. error: 0.05 % of full scale
0/4-20 mA
2
8 8
2/1
3)
/ 33
4 Hz
1
42
53