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MICROTECH 4
Daikin MICROTECH 4 User Manual
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D
–
EOMW
C00A
07-
16_0
2
EN
Operati
on Manual
8/
77
Figure
3, ha
rdware
s
tructure
4.3.2
System
Archi
tecture
The overal
l co
ntrols arc
hitec
ture uses
the fol
lowing
:
•
One Mic
rotech mai
n cont
rol
ler
•
I/O extens
ion mo
dules
as nee
ded de
pendi
ng on the c
onfigu
ration of th
e
unit
•
Optional
BAS i
nterface
as s
elec
ted
Communicat
ion Cards
BAC
net/IP
BAC
net/
MSTP
MODb
u
s
LON
Re
mote Operator I
nterfac
e
MicroTech
I
II Unit Controller
Ex
t
en
si
on I/O Mod
ules
AWC
7
9
Table of Contents
Default Chapter
2
Table of Contents
2
1 Introduction
4
2 Controller Operating Limits
5
3 Controller Features
5
4 General Description
6
Eneral Escription
6
Operation Commands Layout
6
Controller Description
7
Control Network Details
10
5 Sequence of Operation
11
6 Controller Operation
14
Microtech Inputs/Outputs
14
Extension I/O Compressor #1 to #3
14
I/O Exv Circuit #1 to #3
15
Extension I/O Fan Module Circuit #2
16
Extension I/O Fan Module Circuit #3
16
Extension I/O Unit Heat Pump (Old Version)
16
Extension I/O Unit Heat Pump (New Version)
16
Setpoints
16
7 Unit Functions
17
Calculations
17
Unit Model
17
Unit Enable
17
Unit Mode Selection
17
Unit Control States
18
Unit Status
19
Ice Mode Start Delay
19
Evaporator Pump Control
19
Condenser Pump Control
20
Condensation Control
20
Leaving Water Temperature (Lwt) Reset
22
Unit Capacity Control
23
Unit Capacity Overrides
25
Energy Saving Mode
26
Daikin on Site
26
8 Circuit Functions
27
Calculations
27
Circuit Control Logic
28
Circuit Status
29
Compressor Control
29
Pressure Condensation Control
31
Exv Control
32
Liquid Injection
33
9 Software Options
34
Inserting the Password in a Spare Controller
34
10 Alarms and Events
36
Alarm Logging
36
Signaling Alarms
36
Clearing Alarms
36
Unit Rapid Stop Alarms
37
Unit Pumpdown Stop Alarms
41
Unit Events
43
Circuit Alarms
46
Circuit Rapid Stop Alarms
47
Circuit Pumpdown Stop Alarms
57
Circuit Events
60
11 Basic Control System Diagnostic
63
12 Using the Controller
65
Navigating
66
13 Optional Remote User Interface
73
14 Embedded Web Interface
75
15 Controller Maintenance
76
16 ICM and Master/Slave
76
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Daikin MICROTECH 4 Specifications
General
Brand
Daikin
Model
MICROTECH 4
Category
Controller
Language
English
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