Danfoss FC 300 Design Manual page 62

FC 300 Design Guide
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 to + 10 / FC 302: -10 to +10 V (scalable)
Input resistance, R .................................................................................................... approx. 10 kΩ
i
Max. voltage ........................................................................................................................ ± 20 V
Current mode ................................................................................ Switch S201/switch S202 = ON (I)
Current level ................................................................................................. 0/4 to 20 mA (scalable)
Input resistance, R .................................................................................................... approx. 200 Ω
i
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.
Pulse/encoder inputs:
Programmable pulse/encoder inputs ............................................................................................. 2/1
Terminal number pulse/encoder ........................................................................ 29, 33
Max. frequency at terminal 18, 29, 32, 33 .................................................... 110 kHz (push-pull driven)
Max. frequency at terminal 18, 29, 32, 33 ........................................................... 5 kHz (open collector)
Min. frequency at terminal 18, 29, 32, 33 .................................................................................... 4 Hz
Voltage level ............................................................................................. see section on Digital input
Maximum voltage on input ................................................................................................... 28 V DC
Input resistance, R ...................................................................................................... approx. 4 kΩ
i
Pulse input accuracy (0.1 - 1 kHz) ..........................................................
Encoder input accuracy (1 - 110 kHz) ..................................................... Max. error: 0.05% of full scale
The pulse and encoder inputs (terminals 18, 29, 32, 33) are galvanically isolated from the
supply voltage (PELV) and other high-voltage terminals.
1) Pulse inputs are 29 and 33
2) Encoder inputs: 32 = A, and 33 = B
62
FC 300 Selection
MG.33.B6.22 - VLT is a registered Danfoss trademark
1) / 18, 32, 33
Max. error: 0.1% of full scale
2)