Daikin EWAD-CZXR Handleiding
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Installation,OperationandMaintenanceManual
Air cooled chiller with screw compressor
MICROTECH CONTROLLER
Original Instructions
Rev.
02
Date
04/2021
Supersedes
D–EOMAC00A04-14_01EN
CONTROL PANEL OPERATING MANUAL
D–EOMAC00A04-14_02EN
D–EOMAC00A04-14_02EN - 2/62
Contents
1Introduction ....................................................................................................................................................................5
2Controller Features........................................................................................................................................................ 6
3General Description....................................................................................................................................................... 7
3.1General Description ...................................................................................................................................................7
3.2Control Panel Layout ................................................................................................................................................. 7
3.3Hardware Structure ....................................................................................................................................................7
3.4System Architecture ...................................................................................................................................................8
3.4.1Control network details .........................................................................................................................................9
4Sequence of Operation ...............................................................................................................................................10
5Controller Operation.................................................................................................................................................... 13
5.1MicroTech Inputs/Outputs ........................................................................................................................................13
5.1.1Analog Inputs ..................................................................................................................................................... 13
5.1.2Analog Outputs................................................................................................................................................... 13
5.1.3Digital Inputs....................................................................................................................................................... 13
5.1.4Digital Outputs ....................................................................................................................................................13
5.2Extension I/O Compressor #1 to #3 .........................................................................................................................14
5.2.1Analog Inputs ..................................................................................................................................................... 14
5.2.2Analog Outputs................................................................................................................................................... 14
5.2.3Digital Inputs....................................................................................................................................................... 14
5.2.4Digital Outputs ....................................................................................................................................................14
5.3I/O EXV Circuit #1 to #3 ...........................................................................................................................................14
5.3.1Analog Inputs ..................................................................................................................................................... 14
5.3.2Analog Outputs................................................................................................................................................... 14
5.3.3Digital Inputs....................................................................................................................................................... 14
5.3.4Digital Outputs ....................................................................................................................................................14
5.4Extension I/O Fan Module Circuit #1 & 2................................................................................................................. 15
5.4.1Digital Inputs....................................................................................................................................................... 15
5.4.2Digital Outputs ....................................................................................................................................................15
5.5Extension I/O Fan Module Circuit #3 .......................................................................................................................15
5.5.1Digital Outputs ....................................................................................................................................................15
5.6Extension I/O Unit Alarm & Limiting .........................................................................................................................15
5.6.1Analog Inputs ..................................................................................................................................................... 15
5.6.2Analog Outputs................................................................................................................................................... 15
5.6.3Digital Inputs....................................................................................................................................................... 15
5.6.4Digital Outputs ....................................................................................................................................................15
5.7Setpoints ..................................................................................................................................................................16
5.7.1Auto Adjusted Ranges ....................................................................................................................................... 19
5.7.2Dynamic Default Values .....................................................................................................................................19
6Unit Functions.............................................................................................................................................................. 20
6.1Calculations.............................................................................................................................................................. 20
6.1.1LWT Slope.......................................................................................................................................................... 20
6.1.2Pulldown Rate ....................................................................................................................................................20
6.2Unit Type ..................................................................................................................................................................20
6.3Unit Enable............................................................................................................................................................... 20
6.4Unit Mode Selection .................................................................................................................................................20
6.4.1Glycol Configuration ...........................................................................................................................................21
6.5Unit Control States ...................................................................................................................................................21
6.6Unit Status................................................................................................................................................................ 22
6.7Ice Mode Start Delay ............................................................................................................................................... 22
6.8Evaporator Pump Control ........................................................................................................................................22
6.8.1Pump Selection ..................................................................................................................................................22
6.8.2Primary/Standby Pump Staging .........................................................................................................................23
6.8.3Auto Control ....................................................................................................................................................... 23
6.9Noise Reduction .......................................................................................................................................................23
6.10Leaving Water Temperature (LWT) Reset............................................................................................................... 23
6.10.1LWT Target ........................................................................................................................................................23
6.10.2Leaving Water Temperature (LWT) Reset .........................................................................................................23
6.10.34-20 mA External Signal Reset ..........................................................................................................................24
6.10.4Outside Air Temperature (OAT) Reset............................................................................................................... 24
6.11Unit Capacity Control ...............................................................................................................................................25
6.11.1Compressor Staging in Cool Mode ....................................................................................................................25
6.11.2Compressor Staging in Ice Mode .......................................................................................................................25
6.11.3Staging Sequence ..............................................................................................................................................25
6.11.4Compressor Capacity Control In Cool Mode ..................................................................................................... 26
6.11.5Load/Unload Sequence ......................................................................................................................................26
6.11.6Compressor Capacity Control In Ice Mode ........................................................................................................26
6.12Unit Capacity Overrides ...........................................................................................................................................26
D–EOMAC00A04-14_02EN - 3/62
6.12.1Soft Load ............................................................................................................................................................26
6.12.2Demand Limit .....................................................................................................................................................26
6.12.3Network Limit...................................................................................................................................................... 27
6.12.4Current Limit .......................................................................................................................................................27
6.12.5Maximum LWT Pulldown Rate ...........................................................................................................................27
6.12.6High Water Temperature Capacity Limit ............................................................................................................27
6.13Daikin on Site ...........................................................................................................................................................27
6.14Heat Recovery .........................................................................................................................................................27
6.15Heat Recovery Pump ...............................................................................................................................................28
6.16Rapid Restart ...........................................................................................................................................................28
7Software Options .........................................................................................................................................................30
7.1Inserting the Password in a Spare Controller ..........................................................................................................30
7.1.1Modbus MSTP Software Option......................................................................................................................... 31
7.1.2BACNET MSTP ..................................................................................................................................................32
7.1.3BACNET IP ........................................................................................................................................................ 33
8Circuit Functions .........................................................................................................................................................34
8.1Calculations.............................................................................................................................................................. 34
8.1.1Refrigerant Saturated Temperature ...................................................................................................................34
8.1.2Evaporator Approach .........................................................................................................................................34
8.1.3Suction Superheat ..............................................................................................................................................34
8.1.4Discharge Superheat.......................................................................................................................................... 34
8.1.5Oil Differential Pressure .....................................................................................................................................34
8.1.6Maximum Saturated Condenser Temperature................................................................................................... 34
8.1.7High Saturated Condenser – Hold Value ...........................................................................................................34
8.1.8High Saturated Condenser – Unload Value .......................................................................................................34
8.1.9Condenser Saturated Temperature Target ........................................................................................................34
8.1.10Heat Recovery Condenser Saturated Temperature Target ...............................................................................34
8.2Circuit Control Logic................................................................................................................................................. 34
8.2.1Circuit Availability ...............................................................................................................................................34
8.2.2Starting ...............................................................................................................................................................34
8.3Circuit Status ............................................................................................................................................................35
8.4Compressor Control .................................................................................................................................................36
8.5Condenser Fan Control............................................................................................................................................ 37
8.5.1Saturated Condenser Temperature Target ........................................................................................................37
8.5.2Heat Recovery Saturated Condenser Temperature Target ...............................................................................37
8.6EXV Control (for chiller units)................................................................................................................................... 38
8.7Economizer Control ................................................................................................................................................. 39
8.8Subcooler Control ....................................................................................................................................................39
8.9Liquid Injection .........................................................................................................................................................39
9Alarms and Events ......................................................................................................................................................40
9.1Signaling Alarms ......................................................................................................................................................40
9.2Clearing Alarms ....................................................................................................................................................... 40
9.2.1Remote Alarm Signal .........................................................................................................................................40
9.3Description of Alarms ...............................................................................................................................................40
9.3.1Phase Volts Loss/GFP Fault ..............................................................................................................................40
9.3.2Evaporator Flow Loss......................................................................................................................................... 40
9.3.3Evaporator Water Freeze Protect ...................................................................................................................... 40
9.3.4Evaporator #1 Water Freeze Protect .................................................................................................................41
9.3.5Evaporator #2 Water Freeze Protect .................................................................................................................41
9.3.6Evaporator Water Temperatures Inverted .........................................................................................................41
9.3.7Leaving Evaporator Water Temperature Sensor Fault ......................................................................................41
9.3.8Leaving Evaporator Water Temperature Sensor Fault #1 .................................................................................41
9.3.9Leaving Evaporator Water Temperature Sensor Fault #2 .................................................................................41
9.3.10AC Comm Failure ...............................................................................................................................................41
9.3.11Outdoor Air Temperature Sensor Fault ..............................................................................................................41
9.3.12External Alarm ....................................................................................................................................................41
9.3.13Emergency Stop Alarm ......................................................................................................................................41
9.4Unit Events ...............................................................................................................................................................41
9.4.1Entering Evaporator Water Temperature Sensor Fault .....................................................................................42
9.4.2Unit Power Restore ............................................................................................................................................42
9.4.3External Event ....................................................................................................................................................42
9.4.4Low Ambient Lockout .........................................................................................................................................42
9.5Option Alarms ..........................................................................................................................................................42
9.5.1Heat Recovery Water Freeze Protect ................................................................................................................42
9.5.2Heat Recovery Leaving Water Temperature Sensor Fault ................................................................................42
9.5.3Option Comm Failure .........................................................................................................................................42
9.6Option Events........................................................................................................................................................... 42
9.6.1Heat Recovery Entering Water Temperature Sensor Fault ...............................................................................42
9.6.2Low Heat Recovery Entering Water Temperature Lockout ...............................................................................42
Product specificaties
| Merk: | Daikin |
| Categorie: | Hardwarekoeling |
| Model: | EWAD-CZXR |
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