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EVAPCO eco-Air Series, User Manual

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EVAPCO eco-Air Series User Manual Download Page 24

  

24  

Controller User Manual

 

 

 

The Fan Speed/Temperature Screen shown in Figure 31 determines the various speeds at which the eco-Air unit runs in various modes.  

Note that the fan speeds are set in percentage of the fan motor’s nameplate speed.  The energy saving speed is not active unless the 
eco-Air unit is equipped with a precooling system.  The energy saving fan speed allows the precooling system to activate one the fan 
speed reaches the energy saving value.  Once the precooling system is activated, the fan motors will continue to increase in speed if 
the active setpoint is not met.  The speed will continue to increase until the maximum allowed fan speed is met.  To disable the energy 
saving functionality, set the energy saving fan speed to the maximum allowed fan speed. 

 

The quiet operation fan speed limits the speed of the fan motors whenever the Quiet Mode is activated.  Quite Mode may be activated 

via the scheduler or a digital input.  If the quiet mode fan speed is less than the energy saving fan speed, the precooling system will 
be prevented from operating.  See Figure 7 for setup information.  

 
When cooling is not required and the fan speed settles to the minimum allowed fan speed, the fans will turn off based on the shutoff 

timer and offset. 

 

 

Fan speed and temperature setpoints 

 

Parameter

 

 

Description

 

 

Default

 

 

Max. Allowed

 

 

The maximum speed that the fan motors will reach when 
Quiet Mode is not active.

 

 

100%

 

 

Quiet Operation

 

 

The maximum fan motor speed allowed when Quiet Mode 
is activated via the scheduler or digital input.

 

 

100%

 

 

Energy Saving

 

 

The fan speed at which the pre-cooling system will 
activate.

 

 

100%

 

 

Min. Allowed

 

 

The minimum speed at which the fan motors will spin.

 

 

20% (NEMA Motors) 

10%(EC Type Fans)

 

 

Min. Shutoff Timer 

The amount of time that must elapse whenever the fan 
speed reaches the minimum allowed percentage before 
the fans are turned off.  

30 seconds 

Min. Shutoff Offset 

The temperature offset below the setpoint before the fans 
are turned off.  

2.0 °F

 

Table 12  

The parameters of the Fan Speeds Screen. 

 

  

  

 

 

 

 

Figure 31

 

 

 

Summary of Contents for eco-Air Series

Page 1: ...AIR COOLED ADIABATIC FLUID COOLERS CO2 GAS COOLERS REFRIGERANT CONDENSERS EVAPCO Controller User s Manual For EVAPCO authorized parts and service contact your local EVAPCO representative today...

Page 2: ...Screen Navigation 7 Navigating the Display 7 Modifying a Value 8 Navigating the Scheduler 8 Operator Interface Screens 10 Welcome Screen 10 Home Screen 10 Status Screen 12 Alarms Screen 13 Main Menu...

Page 3: ...require any additional information about the operation or maintenance of this equipment contact your local EVAPCO representative You may also visit www evapco com for more information Installation and...

Page 4: ...be used as the main electrical disconnect for the eco Air unit Otherwise separate electrical disconnects may be required Consult applicable electrical codes to make this determination Avoid mounting t...

Page 5: ...ir unit the supplied temperature or pressure sensor must be wired to the junction box location on the connection end of the eco Air unit Figure 3 If the EVAPCO Controller does not ship factory mounted...

Page 6: ...eration of each position is as follows Auto The Auto position allows the EVAPCO Controller to operate the eco Air unit based on the logic programmed into the Controller Note that the unit must be swit...

Page 7: ...dify several setpoints that affect the operation of the eco Air unit The operator interface of the EVAPCO Controller Figure 5 provides an overview of the various screens and menus of the EVAPCO Contro...

Page 8: ...change a parameter for the setpoint temperature Navigating the Scheduler Several functions of the EVAPCO Controller can be scheduled to operate during certain periods of the year or at certain times o...

Page 9: ...function will be activated for that timeframe Note that the first block represents 12 00am to 12 30am The 8 00pm to 12 00am blocks are selected Proceed to Saturday by pressing the Next button Continu...

Page 10: ...will reappear Touching the HMI will return the screen to the Main Home Screen The EVAPCO Controller Welcome Screen Home Screen The Main Home Screen shown in Figure 11 displays the process temperature...

Page 11: ...cooling system is inactive solenoid valve is closed Pre cooling system is active solenoid valve is open Table 1 The states of the pre cooling system status indicator While there is an active alarm th...

Page 12: ...process temperature falls below the process setpoint while the precooling system is active the decrease timer will begin to increment until a predetermined value is reached Once the value is reached...

Page 13: ...ms Screen The System Alarms Screen displays all active alarms as well as a log of previous alarms To scroll through the list a single touch scroll up and down is used The Acknowledge button will chang...

Page 14: ...that triggered the alarm is cleared the time stamp will be displayed in the RTN Time column Status Image Active Ack Return Table 3 The states of alarms Some alarms require a reset on the operator int...

Page 15: ...u Screen On Off Unit Screen The On Off Control screen shows and allows the operator to set the current operational status of the eco Air unit When the eco Air unit is not controlled via an external so...

Page 16: ...to the EVAPCO Controller Off by HMI Unit is turned off manually and may only be enabled via the On Off Control Screen Off by Alarm The unit has been turned off due to an alarm Table 4 The operational...

Page 17: ...desire routine is set to run via the scheduler except the flush routine the scheduler will not operate as selected If equipped with a precooling system the precooling system may be set to run only du...

Page 18: ...entering the information press the Update button The Clock Adjustment Screen Daylight savings can be enabled in the screen shown in Figure 21 Table 7 gives a description of the functionality based on...

Page 19: ...r Service Screens The Service Screens allow the user to change setpoints timers and other parameters that affect the operation of the eco Air unit The Service menu is inaccessible until logging in Fig...

Page 20: ...play the service submenu options as shown in Figure 24 If the unit is enabled the options for I O Test and BMS Network will not be available Turn the unit off to enable these options as shown in Figur...

Page 21: ...series of screens that allow various setpoints and options that directly affect the operation of the ecoAir unit to be adjusted The screen shown in Figure 27 allows the process sensor to be changed No...

Page 22: ...4A R422A R32 R452B R452A Custom Table 9 The preprogramed refrigerants If a refrigerant is required that is not available for selection in Table 9 Custom should be selected in the drop down This will e...

Page 23: ...o Proportional the fan speed will be scaled linearly based on the desired setpoint and a differential band parameter Parameter Description Proportional Controls the fan speed by subtracting the proces...

Page 24: ...scheduler or a digital input If the quiet mode fan speed is less than the energy saving fan speed the precooling system will be prevented from operating See Figure 7 for setup information When cooling...

Page 25: ...duler ambient temperature or digital input Temperature Proportional Band Determines the temperature band between the minimum and maximum fan speed 10 F Table 11 A description of the P regulator parame...

Page 26: ...e above the minimum allowable temperature setpoint at which the precooling system may activate 5 0 F Table 13 A description of the pre cooling system minimum operating ambient temperatures In order to...

Page 27: ...n and low water usage of precooling systems equipped with adiabatic pads it may take several minutes for the precooling system to become fully effective To prevent the precooling system from cycling d...

Page 28: ...Setpoint 2 Trigger Source Sets the secondary setpoint trigger as disable ambient temperature scheduler or digital input Disable Ambient Setpoint The temperature above which the secondary setpoint is t...

Page 29: ...shown in Figure 97 The settings screen allows for the adjustment of the working hours and sensor probe values The value of the process temperature or pressure transducer and ambient temperatures senso...

Page 30: ...able Manual Speed The manual fan speed setpoint 0 Table 21 The manual fan speed parameters The Stage Override allows any stage of the precooling system to be enabled or disabled manually Note that man...

Page 31: ...orm an I O test the eco Air unit must be switched off Figure 18 The test must first be enabled After being enabled the digital outputs may be manually turned On and Off This feature should only be use...

Page 32: ...he Update button will restart the PLC BMS configuration screen for serial and Ethernet communications Parameter Description Default Protocol Select which protocol will be communicated on the serial ne...

Page 33: ...User Manual Manufacturer Screens The Manufacturer Screens are for use by EVAPCO authorized factory technicians to configure the EVAPCO Controller The main menu screen highlighting the Manufacturer but...

Page 34: ...puts a PID controller attempts to minimize the difference between a measure process variable and a desired setpoint PLD Programmable Logic Controller A programmable microprocessor that performs switch...

Page 35: ...is unable to communicate with EC fan motor 2 Fan 3 Offline The controller is unable to communicate with EC fan motor 3 Fan 4 Offline The controller is unable to communicate with EC fan motor 4 Fan 5 O...

Page 36: ...The line voltage of the motor is faulty Fan 1 Current Limitation Engaged Warning The fan controller is limiting the current based on internal calculations of the maximum permissible current Fan 1 Line...

Page 37: ...ower has reached the maximum permissible power and the drive is limiting the current Fan 1 Voltage Limit Warning The motor power has reached the maximum permissible power and the drive is limiting the...

Page 38: ...38 Controller User Manual Notes...

Page 39: ......

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