Danfoss VLT FC 100, Operating Instructions Manual, Page: 165 / 193

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 : 0 to + 10V (scaleable)
Input resistance, R
i
approx. 10 k Ω
Max. voltage ± 20V
Current mode Switch S201/switch S202 = ON (I)
Current level 0/4 to 20mA (scaleable)
Input resistance, R
i
approx. 200
Ω
Max. current 30mA
Resolution for analog inputs 10 bit (+ sign)
Accuracy of analog inputs Max. error 0.5% of full scale
Bandwidth 200Hz
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
Pulse inputs:
Programmable pulse inputs
2
Terminal number pulse 29, 33
Max. frequency at terminal, 29, 33 110kHz (Push-pull driven)
Max. frequency at terminal, 29, 33 5kHz (open collector)
Min. frequency at terminal 29, 33 4Hz
Voltage level see section on Digital input
Maximum voltage on input 28V DC
Input resistance, R
i
approx. 4k
Ω
Pulse input accuracy (0.1 - 1 kHz) Max. error: 0.1% of full scale
Analog output:
Number of programmable analog outputs
1
Terminal number 42
Current range at analog output 0/4 - 20mA
Max. resistor load to common at analog output 500
Ω
Accuracy on analog output Max. error: 0.8% of full scale
Resolution on analog output 8 bit
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control card, RS-485 serial communication:
Terminal number
68 (P,TX+, RX+), 69 (N,TX-, RX-)
Terminal number 61 Common for terminals 68 and 69
The RS-485 serial communication circuit is functionally seated from other central circuits and galvanically isolated from the supply voltage (PELV).
Digital output:
Programmable digital/pulse outputs
2
Terminal number 27, 29 1)
Voltage level at digital/frequency output 0 - 24V
7 General Specifications
VLT HVAC Drive High Power Operating In-
structions
164
MG.11.F3.02 - VLT ® is a registered Danfoss trademark
7