Analog I/O Option Mcb - Danfoss VLT HVAC Drive FC 102 Design Manual

Selection

3.1.8 Analog I/O Option MCB 109

Use the Analog I/O card in e.g. the following cases:
•
Providing battery back-up of clock function on
the control card
3 3
•
As a general extension of analog I/O selection
available on control card,for example, multi-zone
control with 3 pressure transmitters
•
Turning the frequency converter into decentral
I/O block supporting building management
system with inputs for sensors and outputs for
operating dampers and valve actuators
•
Supporting extended PID controllers with I/Os for
setpoint inputs, transmitter/sensor inputs and
outputs for actuators
CONTROL CARD (FREQUENCY CONVERTER)
ANALOG I/O
OPTION MCB 109
ANALOG INPUT
1 2
0-10
VDC
Pt1000/
Ni 1000
Illustration 3.8 Principle diagram for Analog I/O Mounted in a
Frequency Converter
Analog I/O configuration
3 x Analog inputs, capable of handling following:
•
0–10 V DC
OR
•
0–20 mA (voltage input 0–10 V) by mounting a
510 Ω resistor across terminals
•
4–20 mA (voltage input 2–10 V) by mounting a
510 Ω resistor across terminals
•
Ni 1000 temperature sensor of 1000 Ω at 0 °C.
Specifications according to DIN43760
54
CPU
0 V 24 VDC
CPU RTC
ANALOG OUTPUT
3 4 5 6 7 8 9 10
0-10 0-10
VDC VDC
Danfoss A/S © Rev. 05/2014 All rights reserved.
Design Guide
•
3 x Analog outputs supplying 0–10 V DC
NOTICE
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.
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.
Analog inputs - terminal X42/1-6
Parameter group for read out: 18-3*. See also VLT
Drive FC 102 Programming Guide.
Parameter groups for set-up: 26-0*, 26-1*, 26-2* and 26-3*.
See also VLT
3V
LITHIUM
3xAnalog inputs
BATTERY
Operating range
Resolution
Accuracy
11 12
Sampling
Max load
Impedance
Table 3.5 Analog Input Specifications
When used for voltage, Analog inputs are scalable by
parameters for each input.
When used for temperature sensors, 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.
Pt 1000 temperature sensor of 1000 Ω at 0 °C.
Specifications according to IEC 60751
®
HVAC Drive FC 102 Programming Guide.
Used as
temperature
sensor input
-50–+150 °C
11 bits
-50 °C
±1 Kelvin
+150 °C
± 2 Kelvin
3 Hz
-
-
®
HVAC
Used as
voltage input
0–10 V DC
10 bits
0.2% of full
scale at cal.
temperature
2.4 Hz
± 20 V
continuously
Approximately
5 kΩ
MG16C202