Danfoss VLT Refrigeration Drive FC 103 Design Manual page 126

Specifications
Analog inputs
Number of analog inputs
Terminal number
Modes
Mode select
Voltage mode
Voltage level
Input resistance, R
Maximum voltage
Current mode
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.
7 7
+24V
18
37
Functional
isolation
RS485
Illustration 7.1 PELV Isolation of Analog Inputs
Pulse inputs
Programmable pulse
Terminal number pulse
Maximum frequency at terminal 29, 32, 33
Maximum frequency at terminal 29, 32, 33
Minimum 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 (1–11 kHz)
The pulse and encoder inputs (terminals 29, 32, 33) are galvanically isolated from the supply voltage (PELV) and other high-
voltage terminals.
1) Pulse inputs are 29 and 33.
2) Encoder inputs: 32=A, and 33=B.
Analog output
Number of programmable analog outputs
Terminal number
Current range at analog output
Maximum 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.
124
VLT
i
i
PELV isolation
Control
Mains
High
Motor
voltage
DC-Bus
i
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®
Refrigeration Drive FC 103
53, 54
Voltage or current
Switch S201 and switch S202
Switch S201/switch S202=OFF (U)
-10 V to +10 V (scaleable)
Approximately 10 kΩ
±20 V
Switch S201/switch S202=ON (I)
0/4 to 20 mA (scaleable)
Approximately 200 Ω
30 mA
10 bit (+ sign)
Maximum error 0.5% of full scale
100 Hz
1) 2)
29, 33 /32
110 kHz (Push-pull driven)
5 kHz (open collector)
See chapter 7.6.1 Digital Inputs
28 V DC
Approximately 4 kΩ
Maximum error: 0.1% of full scale
Maximum error: 0.05% of full scale
0/4–20 mA
500 Ω
Maximum error: 0.5% of full scale
12 bit
MG16G202
2
2/1
2)
, 33
4 Hz
1
42