Sterling 882.00249.00 manual Runs but no station loads

Page 42

Label

Description

LOADING

Following the IDLE (Startup) state, the vent valve is closed and the first

 

station in demand loads when that station sequence valve opens. This is the

 

LOADING state. You can define load times for each station. The controller

 

loads the station in demand until one of the two events below occur:

 

1. The volume fill sensor becomes active.

 

2. The load time is exhausted.

 

At the end of the LOADING cycle, the controller closes the sequence valve

 

and continues to the next station in the queue. If all stations are satisfied, the

 

controller enters the IDLE (No Activity) state.

 

 

IDLE

The IDLE (No Activity) state acts as an energy saver and pump lifetime

(No Activity)

extender. During this state, the atmospheric valve is open, allowing the

 

vacuum to be vented. All sequence valves are closed and all inputs are

 

monitored for demand activity. This feature reduces repeated starting and

 

stopping of pumps, extending pump operation life.

 

If the controller senses a demand during the IDLE (No Activity) state, the

 

controller re-enters the LOADING state by closing the vent valve and opening

 

the sequence valve of the station in demand.

 

If no demand exists in the system for the duration of the IDLE (No Activity)

 

time setting, the controller then enters the READY state.

 

Note: IDLE is any condition in the conveying system when the pump

 

runs but no station loads.

 

 

READY

The READY state is a monitoring function. All outputs are off and the

 

controller waits for a demand signal to be fulfilled. If the controller senses a

 

demand condition, the controller then re-enters the STARTING state and

 

returns to load material into the hoppers.

 

 

BLOWBACK

When enabled, the controller enters the BLOWBACK state following a user-

 

definable number of station loads. The blowback function is to pulse air

 

through the filter system to keep the filter from clogging. The number and

 

duration of the air pulses is also user-definable; see the Blowback menu on

 

Pages 54-58for more information.

 

 

LOADING/IDLE

In Dual Pump mode, if you start the controller with demand from stations

(2 Pump Mode

assigned to both pumps, both pumps start at the same time. In many plants,

Only)

such a resulting power surge can momentarily exceed the electrical limits of

 

the plant. To prevent this condition, the pumps are staged in sequence

 

separated by a short duration. Pump 1 always starts first, followed by Pump 2.

 

This state also applies when both pumps are in the OFFLINE state and

 

demand occurs on both systems at the same time.

 

 

2–Pump 12-Station Controllers

Chapter 4: Operation

41

Page 41 Page 43
Image 42
Page 41 Page 43
Contents SCC 2-Pump 12-Station Controllers Write Down Your Serial Numbers Here For Future ReferenceParts and Service Department Event of Shipping Damage Shipping InformationUnpacking and Inspection If the Shipment is Not CompleteWarranty Returns ReturnsCredit Returns Table of Contents Maintenance Safety How to Use This ManualSafety Symbols Used in this Manual Controller Safety Tags Wear Safety Glasses and Work GlovesResponsibility General ResponsibilityMaintenance Responsibility Reporting a Safety DefectOperator Responsibility Functional Description Models Covered in This ManualGeneral Description Mechanical Features Standard FeaturesOptional Features Electrical FeaturesSafety Device Lock-Outs Safety Devices and InterlocksSafety Circuit Standards Fail Safe OperationPump 12-Station Controllers Functional Description Uncrating InstallationMaking Control Panel Power Drop Wiring Connections Mounting the Control PanelConnecting the Control Panel to Vacuum Hoppers Connecting the Control Panel to the Pump PackageTypical 24-Volt Junction Box Wiring Diagram DC Controller Power Sources SetupMain Power InputsGaining Access to the Menu System Menu Tree StructureOperation Mode, Station Settings Menu Station SETTINGS? NO/YESStation Settings Menu Operation MODE? NO/YESALL Normal MODE? NO/YES ALL Sightglass MODE? NO/YESStation 1 Normal =NORMAL N=SIGHTGLS Set Dump Delay, Station Settings Menu SET Dump DELAY? NO/YESDump Delay 11 15.0s To Select a Station Press StationSET Input DELAY? NO/YES Set Input Delay, Station Settings MenuSET Station ALARMS? NO/YES Set Station Alarms, Station Settings MenuInput DLY 11 0.250s Alarm 11 Enabled =ENABLE N=DISABLE To Select a Station Press Hopper Alarm After 3 Loads Press Enter to SaveAssign PUMPSTATION? NO/YES Assigning a Pump to a StationStation 10 Pump Select Pump 1 or Setting the Pump Mode Pump SETTINGS? NO/YESPump Settings Menu Pump MODE? NO/YESSET Active Pump Select Pump 1 or Changing Blowback Settings, Pump Settings Menu Blowback SETTINGS? NO/YESEnable BLOWBACK? NO/YES Select Pump 1 or USE Keypad to EnterBlowback Pulses Setting for Pump On Time 0.500 sOFF Time 0.500 s Blbk After 12 Loads Setting for Pump Idle Delay TIME? NO/YESIdle Delay Time Settings, Pump Settings Menu System Settings Menu Idle Time 10.000 sService Settings Menu Saving Controller Settings to Flash MemoryOperation Load Time 10 63secSection Controller Description and OperationText Area STATION-- Offline Time --- Logo Pump Modes Single Pump ModeDual Pump Mode P1S----- Offline P2S----- OfflineStation Icons Station Icon Segments Label DescriptionStatus Indicators Status Indicator Icons Label DescriptionController Keypad Key DescriptionsLabel Description Operation Operation StatesRuns but no station loads Shut-Down Maintenance Updating Bios SoftwareBios Connection, Electrical Diagram Drawing A0560970LEGEND Troubleshooting General TroubleshootingSee -5 on Page 75 for Writing Parameters To FLASH-PLEASE Wait Saving Backup Controller Recovery using Flash Memory TechnologyWarranty Restrictions WarrantyWarranty Specifications AppendixWarranty Liabilities Customer ResponsibilitiesDrawings and Diagrams Pump 12 station Controller Control PanelSpare Parts List Places A0560974 Power cord A0560954ENCL, CARLON, Mount FLNG, MNK10L A0560974 RECT, BRIDGE, 25 AMPS, GBPC2510 Controller Identification Serial Number Tag Technical Assistance Contact InformationService Settings Menu Service Only InformationRamp UP DLY 1.500s Setting for Pump n Setting the Ramp Up TimeRamp DN DLY 8.000s Setting for Pump n Setting the Ramp Down TimeSET Ramp Down TIME? NO/YES Stage Delay 3.000s Setting the Pump Stage TimeSET Pump Stage TIME? NO/YES SET LCD Blink DELAY? NO/YES Blink Delay .500sSetting the LCD Blink Delay HI VAC Sensor DELAY? NO/YES Hivac Delay 3.000s Setting for Pump nSetting the Hi Vacuum Sensor Delay HI VAC Vent DELAY? NO/YES HV Vent DLY 10.000s Setting for Pump nSetting the Hi Vacuum Vent Delay Setting the Hi Vacuum Load Count HI VAC Load COUNT? NO/YESHV Load CNT BNK0 BNK1 Using the Installation Aids MenusInput MONITOR? NO/YES Input Monitor ScreenOutput CONTROL? NO/YES Automatic or MANUAL? =AUTO Y=MANUALOutput Control Menu OUTBNK0 OUTBNK1 Using the OEM Service Menu OEM Menu Access Is NOW AvailableOEM SETTINGS? NO/YES Other Controller Restricted AreasRecovering Passwords PWL11111 PWL22222 PWL33333 PWL44444Press YES to Resume Restoring the Controller to Factory DefaultsROM Checksum Verifying Software Checksums
Top Page Image Contents