Specifications

When MCB 107, 24 V backup option is supplying the
control circuit, the internal 24 V supply is automatically
disconnected.
35
36
35
36
130BA028.11
Illustration 3.6 Connection to 24 V Backup Supplier (A2-A3).
9
9
6
311
130BA216.10
35 36
Illustration 3.7 Connection to 24 V Backup Supplier (A5-C2).
3.1.8 Analog I/O Option MCB 109
Uses for the analog I/O card:
•
Providing battery back-up of clock function on
the control card
•
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
ANALOG INPUT
CPU
CAN BUS
CPU
CONTROL CARD (FREQUENCY CONVERTER)
ANALOG I/O
OPTION MCB 109
ANALOG OUTPUT
RTC
Pt1000/
Ni 1000
3V
LITHIUM
BATTERY
1
23
45
6
7
8
9 10
11
12
AIN AIN AIN AOUT
0 V24 VDC
130BA405.11
AOUT AOUT
GND
0-10
VDC
0-10
VDC
0-10
VDC
< 1 mA < 1 mA
< 1 mA
0-10 VDC 0-10 VDC 0-10 VDC
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
•
Pt 1000 temperature sensor of 1000 Ω at 0 °C.
Specifications according to IEC 60751
3 x Analog outputs supplying 0–10 V DC.
Selection VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 53
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