Danfoss VLT AQUA Drive FC 202 Design Manual page 62

Selection
NOTE
Note the values available within the different standard
groups of resistors:
E12: Closest standard value is 470 Ω, creating an input of
449.9 Ω and 8.997 V.
3 3
E24: Closest standard value is 510 Ω, creating an input of
486.4 Ω and 9.728 V.
E48: Closest standard value is 511 Ω, creating an input of
487.3 Ω and 9.746 V.
E96: Closest standard value is 523 Ω, creating an input of
498.2 Ω and 9.964 V.
3 x Analog inputs
Used as
temperature
sensor input
Used as
voltage input
Table 3.24 Analog Inputs
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*. For more
information, consult the Programming Guide.
Parameter groups for set-up: 26-4* Analog Out X42/7, 26-5*
Analog Out X42/9 and 26-6* Analog Out X42/11. For more
information, consult the Programming Guide.
3 x Analog Output
outputs signal level
Volt 0-10V DC
Table 3.25 Analog Outputs
Analog outputs are scalable by parameters for each
output.
60
®
VLT AQUA Drive FC 202 Design Guide
Operating range Resolution
-50°C to +150°C 11 bits
0 - 10 V DC 10 bits
Resolution Linearity Max load
11 bits 1% of full 1 mA
scale
MG20Z102 - VLT
Analog inputs - terminal X42/1-6
Parameter group for read out: 18-3* Analog Readouts. For
more information, consult the Programming Guide.
Parameter groups for set-up: 26-0* Analog I/O Mode, 26-1*
Analog Input X42/1, 26-2* Analog Input X42/3 and 26-3*
Analog Input X42/5. For more information, consult the
Programming Guide.
Accuracy Sampling
-50 °C 3 Hz
±1 °K
+150 °C
±2 °K
0.2% of full
scale at cal. 2.4 Hz
temperature
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, refer to the
Programming Guide.
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 the frequency converter is
operating at 40 °C ambient temperature. If battery pack
back-up fails, analog I/O option must be exchanged.
Cascade control is a common control system used to
control parallel pumps or fans in an energy efficient way.
The cascade controller option provides the capability to
control multiple pumps configured in parallel in a way that
makes them appear as a single larger pump.
To satisfy the required system output for flow or pressure
when using cascade controllers, the individual pumps are
automatically turned on (staged) and turned off (de-
staged) as needed. The speed of pumps connected to
®
VLT AQUA Drive FC 202 is also controlled to provide a
continuous range of system output.
®
is a registered Danfoss trademark
Max load Impedance
- -
+/- 20 V Approximately
continuously
5 kΩ