Danfoss VLT Midi Drive FC 280 Operating Instructions Manual page 52

Specifications
Analog inputs
Number of analog inputs
Terminal number
Modes
Mode select
Voltage level
Input resistance, R
Maximum voltage
Current level
Input resistance, R
Maximum 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.
1) Terminal 53 supports only voltage mode, and can also be used as digital input.
+24 V
18
31
9 9
Functional
isolation
RS-485
Illustration 9.1 Analog Inputs
Pulse inputs
Programmable pulse inputs
Terminal number pulse
Maximum frequency at terminal 29, 33
Maximum frequency at terminal 29, 33
Minimum frequency at terminal 29, 33
Voltage level
Maximum voltage on input
Input resistance, R
Pulse input accuracy (0.1–1 kHz)
Pulse input accuracy (1–32 kHz)
Digital outputs
Programmable digital/pulse outputs
Terminal number
Voltage level at digital/frequency output
Maximum output current (sink or source)
Maximum load at frequency output
Maximum capacitive load at frequency output
Minimum output frequency at frequency output
Maximum output frequency at frequency output
Accuracy of frequency output
Resolution of frequency output
1) Terminal 27 can also be programmed as input.
The digital output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
50
VLT
i
i
PELV isolation
Control
Mains
High
Motor
voltage
DC Bus
i
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®
Midi Drive FC 280
53
Voltage or current
Software
0–10 V
approximately 10 kΩ
-15 V to +20 V
0/4 to 20 mA (scaleable)
approximately 200 Ω
30 mA
11 bit
Maximum error 0.5% of full scale
100 Hz
29, 33
32 kHz (push-pull driven)
5 kHz (open collector)
See the section on digital input.
28 V DC
Approximately 4 kΩ
Maximum error: 0.1% of full scale
Maximum error: 0.05% of full scale
0–24 V
40 mA
10 nF
32 kHz
Maximum error: 0.1% of full scale
10 bit
MG07A102
2
1)
, 54
2
4 Hz
1
1)
27
1 kΩ
4 Hz