Danfoss FC 300 Design Manual page 78

4. FC 300 Selection
4
Pulse/encoder inputs:
Programmable pulse/encoder inputs
Terminal number pulse/encoder
Max. frequency at terminal 29, 32, 33
Max. frequency at terminal 29, 32, 33
Min. frequency at terminal 29, 32, 33
Voltage level
Maximum voltage on input
Input resistance, R
Pulse input accuracy (0.1-1 kHz)
Encoder input accuracy (1 - 110 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
3) Encoder inputs: 32 = A, and 33 = B
Analog output:
Number of programmable analog outputs
Terminal number
Current range at analog output
Max. load GND - analog output
Accuracy on analog output
Resolution on analog output
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals.
Control card, RS-485 serial communication:
Terminal number
Terminal number 61
The RS-485 serial communication circuit is functionally separated from other central circuits and
galvanically isolated from the supply voltage (PELV).
Digital output:
Programmable digital/pulse outputs
Terminal number
Voltage level at digital/frequency output
Max. output current (sink or source)
78
i
MG.33.B9.22 - VLT ® is a registered Danfoss trademark.
FC 300 Design Guide
29 1) , 33 2) / 32 3)
110 kHz (push-pull driven)
5 kHz (open collector)
see section on Digital input
28 V DC
approximately 4 kΩ
Max. error: 0.1% of full scale
Max. error: 0.05% of full scale
0/4 - 20 mA
500 Ω
Max. error: 0.5% of full scale
12 bit
68 (P,TX+, RX+), 69 (N,TX-, RX-)
Common for terminals 68 and 69
27, 29
0-24 V
40 mA
2/1
, 33 3)
4 Hz
1
42
2
1)