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43
4 TO 20 MA TEMPERATURE RESET
The control system is also capable of temperature reset based
on an externally powered 4 to 20 mA signal. The EMM is re-
quired for temperature reset using a 4 to 20 mA signal.
To use 4 to 20 mA Temperature Reset, four variables must be
configured: Cooling Reset Select, Current No Reset Value
(milliamp signal at which no temperature reset is required),
Current Full Reset Value (milliamp signal at which full tem-
perature reset is required), and Cooling Reset Deg Value (the
maximum amount of temperature reset desired).
To configure this option with the Carrier Controller display:
In the example in Fig. 41, at 4 mA no reset takes place and at
20 mA, 5°F (2.8°C) chilled water set point reset is required.
SPACE TEMPERATURE RESET
The control system is also capable of temperature reset
based on space temperature. The EMM and accessory sen-
sor (P/N 33ZCT55SPT) are required for temperature reset
using space temperature. This sensor measures the space
(room) temperature for the purpose of set point reset. Only
units with the optional energy management module are fit-
ted with this sensor.
To use Space Temperature Reset, four variables must be con-
figured: Cooling Reset Select, Space T No Reset Value (space
temperature at which no temperature reset is required), Space T
Full Reset Value (space temperature at which full temperature
reset is required), and Cooling Reset Deg Value (the maximum
amount of temperature reset desired).
To configure this option with the Carrier Controller display:
In the space temperature reset example in Fig. 42, a reset of
6°F (3.3°C) is applied when the space temperature is 68°F
(20.0°C) and no reset takes place when the space temperature
is 72°F (22.2°C).
Fig. 41 — Example: 4 to 20 mA Temperature Reset
CAUTION
Care should be taken when interfacing with other control
systems due to possible power supply differences such as a
full wave bridge versus a half wave rectification. Connection
of control devices with different power supplies may result in
permanent damage. Carrier Controller controls incorporate
power supplies with half wave rectification. A signal isola-
tion device should be utilized if the signal generator incorpo-
rates a full wave bridge rectifier.
DISPLAY NAME
PATH
VALUE
Cooling Reset
Select
Main Menu
Configuration Menu
Reset Configuration
Default = 3
0=None,
1=OAT
2=Delta T,
3=4 to 20mA control
4=Space Temp
Current No
Reset Value
Default = 0mA
Range 0 to 20mA
Current Full
Reset Value
Default = 0mA
Range 0 to 20mA
Cooling Reset
Deg Value
Default = 0°F (0°C)
Range –30 to 30°F
(–16.7 to 16.6°C)
DISPLAY NAME
PATH
VALUE
Cooling Reset
Select
Main Menu
Configuration Menu
Reset Configuration
Default = 4
0=None,
1=OAT
2=Delta T,
3=4 to 20mA control
4=Space Temp
Space T No
Reset Value
Default = 14°F (7.8°C)
Range 14 to 125°F
(7.8 to 69.4°C)
Space T Full
Reset Value
Default = 14°F (7.8°C)
Range 14 to 125°F
(7.8 to 69.4°C)
Cooling Reset
Deg Value
Default = 0°F (0°C)
Range –30 to 30°F
(–16.7 to 16.6°C)
0
1
2
3
4
5
6
0
2
4
1
0
1
0
mA
S
i
g
nal
De
g
ree
s
Re
s
et (de
g
F)
2
Cooling Re
s
et
Deg. V
a
l
u
e
(cr_deg)
C
u
rrent No Re
s
et V
a
l
u
e
(v_hr_no)
C
u
rrent F
u
ll Re
s
et V
a
l
u
e
(v_hr_f
u
)
4
6
8
12
16
1
8
a30-5885
Summary of Contents for AquaForce 30XV140
Page 79: ...79 Fig 76 VFD Communication Wiring Compressor A B Fan VFD A1 A2 B1 B2...
Page 228: ...228 Fig 90 30XV Typical Field Wiring Schematic cont...
Page 229: ...229 Fig 91 30XV Standard Tier 140 275 All Voltages Power Schematic NOTE See Legend on page 226...
Page 230: ...230 Fig 92 30XV Standard Tier 300 325 All Voltages Power Schematic NOTE See Legend on page 226...
Page 240: ...240 Fig 99 30XV Communication Wiring...
Page 241: ...241 Fig 100 30XV 115V Control Wiring All Tonnages All Voltages...
Page 242: ...242 Fig 101 30XV 24V Control Wiring 30XV140 325 All Voltages...
Page 243: ...243 Fig 101 30XV 24V Control Wiring 30XV140 325 All Voltages cont...
Page 244: ...244 Fig 102 30XV 24V Control Wiring 30XV350 500 All Voltages...
Page 245: ...245 Fig 102 30XV 24V Control Wiring 30XV350 500 All Voltages cont...
Page 246: ...246 Fig 103 Component Arrangement Diagram for 30XV140 325...
Page 247: ...247 Fig 103 Component Arrangement Diagram for 30XV140 325 cont...
Page 248: ...248 Fig 104 Component Arrangement Diagram for 30XV350 500...
Page 337: ...337 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig L System Information...
Page 338: ...338 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig M Unit and Language Settings...
Page 341: ...341 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig P Data Input 2...
Page 342: ...342 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig Q Data Input 3...
Page 347: ...347 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig U Pump Wiring Diagram...