Control Card, Rs485 Serial Communication; Control Card Performance; Analog Inputs - Danfoss VLT HVAC Drive FC 102 Operating Manual

Operating Guide | VLT® HVAC Drive FC 102
The analog output is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.

10.6.10 Control Card, RS485 Serial Communication

Terminal number
Terminal number XD2.1
The RS485 serial communication circuit is galvanically isolated from the supply voltage (PELV).

10.6.11 Control Card Performance

Scan interval

10.6.12 Analog Inputs

Number of analog inputs
Terminal number
Modes
Mode select
Voltage mode
Voltage level
Input resistance, R
i
Maximum voltage
Current mode
Current level
Input resistance, R
i
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.
+24 V
Control
18
37
Functional
isolation
RS485
Illustration 69: PELV Isolation
168 | Danfoss A/S © 2018.10
PELV isolation
Mains
High
Motor
voltage
DC-bus
Specifications
XD2.2 (P,TX+, RX+), XD2.3 (N,TX-, RX-)
Common for terminals XD2.2 and XD2.3
XD2.7, XD2.8
Voltage or current
Switch S201 and switch S202
Switch S201/switch S202 = OFF (U)
-10 V to +10 V (scaleable)
Approximately 10 kΩ
Switch S201/S202 = ON (I)
0/4 to 20 mA (scaleable)
Approximately 200 Ω
10 bit (+ sign)
Maximum error 0.5% of full scale
AQ262141314214en-000101 / 130R0880
1 ms
2
±20 V
30 mA
100 Hz