C
ONTROL
UNIT
Honeywell
• 50
6
6.1.2
Control terminals and DIP switches
The terminals of the
Basic I/O board
and the
Relay boards
are described below. For more in-
formation on the connections, see chapter 7.2.1.
The terminals shown on shadowed background are assigned for signals with optional functions
selectable with DIP switches. See more information in chapter 6.1.2.1 on page 52.
Table 15. Control I/O terminal signals on basic I/O board
and connection example
Basic I/O board
Terminal
Signal
1
+10 Vref
Reference output
2
AI1+
Analogue input,
voltage or current
3
AI1-
Analogue input com-
mon (current)
4
AI2+
Analogue input,
voltage or current
5
AI2-
Analogue input com-
mon (current)
6
24Vout
24V aux. voltage
7
GND
I/O ground
8
DI1
Digital input 1
9
DI2
Digital input 2
10
DI3
Digital input 3
11
CM
Common for DI1-DI6
*
*. Digital inputs can be disconnected from
ground, see chapter 6.1.2.2.
12
24Vout
24V aux. voltage
13
GND
I/O ground
14
DI4
Digital input 4
15
DI5
Digital input 5
16
DI6
Digital input 6
17
CM
Common for DI1-DI6*
18
AO1+
Analogue signal
(+output)
19
AO-/GND
Analogue output com-
mon
30
+24 VDCin
24VDC auxiliary input
voltage
A
RS485
Negative
B
RS485
Positive
Reference
potentiometer 1...10 k
Ω
Remote reference
4...20mA/0...10V
mA
Содержание SmartVFD HVAC MR4
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