Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual page 98

General Specifications
Input resistance, R
All digital inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
1) Terminals 27 and 29 can also be programmed as output.
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
7 7
Accuracy of analog inputs
Bandwidth
The analog inputs are galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Illustration 7.1 PELV Isolation of 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)
Analog output
Number of programmable analog outputs
Terminal number
Current range at analog output
Maximum resistor load to common at analog output
Accuracy on analog output
96
Operating Instructions
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+24V
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Functional
isolation
RS485
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Danfoss A/S © Rev. 06/2014 All rights reserved.
PELV isolation
Control
Mains
High
Motor
voltage
DC-Bus
approx. 4 kΩ
53, 54
Voltage or current
Switches S201 and S202
Switch S201/S202 = OFF (U)
0-10 V (scaleable)
approx. 10 kΩ
±20 V
Switch S201/S202 = ON (I)
0/4-20 mA (scaleable)
approx. 200 Ω
30 mA
10 bit (+ sign)
Maximum error 0.5% of full scale
200 Hz
29, 33
110 kHz (push-pull driven)
5 kHz (open collector)
4 Hz
see Digital inputs
28 V DC
approx. 4 kΩ
Maximum error 0.1% of full scale
0/4-20 mA
500 Ω
Maximum error 0.8% of full scale
MG16B202
2
2
1
42