Danfoss VLT AQUA Drive Design Manual page 76

3. VLT AQUA Selection
Analog inputs - terminal X42/1-6
Parameter group for read out: 18-3* See also
Parameter groups for set-up: 26-0*, 26-1*, 26-2* and 26-3* See also
3 x Analog
inputs
3
Used as
temperature
sensor input
Used as
voltage input
When used for voltage, analog inputs are scalable by parameters for each input.
When used for temperature sensor, analog inputs scaling is preset to necessary signal level for specified temperature span.
When analog inputs are used for temperature sensors, it is possible to read out feedback value in both °C and °F.
When operating with temperature sensors, maximum cable length to connect sensors is 80 m non-screened / non-twisted wires.
Analog outputs - terminal X42/7-12
Parameter group for read out and write: 18-3* See also
Parameter groups for set-up: 26-4*, 26-5* and 26-6* See also
3 x Analog outputs
Volt
Analog outputs are scalable by parameters for each output.
The function assigned is selectable via a parameter and have same options as for analog outputs on control card.
For a more detailed description of parameters, please refer to the
Real-time clock (RTC) with back-up
The data format of RTC includes year, month, date, hour, minutes and weekday.
Accuracy of clock is better than ± 20 ppm at 25° C.
The built-in lithium back-up battery lasts on average for minimum 10 years, when frequency converter is operating at 40 °C ambient temperature. If
battery pack back-up fails, analog I/O option must be exchanged.
76
Programming Guide.
Resolu-
Operating range
tion
-50 to +150 °C 11 bits
0 - 10 VDC 10 bits
Programming Guide
Programming Guide
Output signal level Resolution
0-10 VDC 11 bits
MG.20.N4.02 - VLT
Programming Guide.
Sam-
Accuracy
pling
-50 °C 3 Hz
±1 Kelvin
+150 °C
±2 Kelvin
0.2% of full
scale at cal. 2.4 Hz
temperature
Linearity Max load
1% of full scale 1 mA
Programming Guide
.
®
is a registered Danfoss trademark
®
VLT AQUA Drive Design Guide
Max load Impedance
- -
+/- 20 V Approximately
continuously 5 kΩ