Controller Operation; Microtech Inputs/Outputs; Extension I/O Compressor #1 To #3 - Daikin MICROTECH III Operating Manual

6

CONTROLLER OPERATION

6.1

MicroTech Inputs/Outputs

The chiller may be equipped with one up to three compressors.
6.1.1 Analog Inputs
# Description
AI1 Evaporator Entering Water Temp
AI2 Evaporator Leaving Water Temp
AI3 Condenser Entering Water Temp
X1 Condenser Leaving Water Temp
X4 LWT Reset
X7 Demand Limit
X8 Unit Current
6.1.2 Analog Outputs
#
X5 Condenser Pump VFD
X6 Condenser Bypass Valve
6.1.3 Digital Inputs
#
DI1 Unit PVM
DI2 Evaporator Flow Switch
DI3 Double Set Point/ Mode Switch
DI4 External Alarm
DI5 Unit Switch
DI6 Emergency Stop
X2 Current Limit Enable
X3 Condenser Flow Switch
6.1.4 Digital Outputs
#
DO1 Evaporator Water Pump #1
DO2 Unit Alarm
DO3 Cooling Tower Out 1
DO4 Cooling Tower Out 2
DO5 Cooling Tower Out 3
DO6 Cooling Tower Out 4
DO7
DO8 Evaporator Water Pump #2
DO9 Condenser Water Pump
6.2

Extension I/O Compressor #1 to #3

6.2.1 Analog Inputs
# Description
X1 Discharge Temperature
X2 Evaporator Pressure
X3 Oil Pressure
X4 Condenser Pressure
D–EOMWC00A07-16_02EN
Description
Description
Description
Signal Source
NTC Thermister (10K@25°C)
NTC Thermister (10K@25°C)
NTC Thermister (10K@25°C)
NTC Thermister (10K@25°C)
4-20 mA Current
4-20 mA Current
4-20 mA Current
Output Signal
0-10VDC
0-10VDC
Signal Off
Fault
No Flow
Cool mode
Remote off
Unit off
Unit off/rapid stop
Disabled
No Flow
Output OFF
Pump Off
Alarm not Active
Fan Off
Fan Off
Fan Off
Fan Off
Pump Off
Pump Off
Signal Source
NTC Thermister (10K@25°C)
Ratiometric (0,5-4,5 Vdc)
Ratiometric (0,5-4,5 Vdc)
Ratiometric (0,5-4,5 Vdc)
Operation Manual
Expected Range
-50°C – 120°C
-50°C – 120°C
-50°C – 120°C
-50°C – 120°C
1 to 23 mA
1 to 23 mA
1 to 23 mA
Range
0 to 100% (1000 steps resolution)
0 to 100% (1000 steps resolution)
Signal On
No Fault
Flow
Ice mode
Remote on
Unit on
Unit on
Enabled
Flow
Output ON
Pump On
Alarm Active (Flashing=
circuit alarm)
Fan On
Fan On
Fan On
Fan On
Pump On
Pump On
Expected Range
-50°C – 120°C
0 to 5 Vdc
0 to 5 Vdc
0 to 5 Vdc
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