Walchem WDT400 Series Скачать руководство пользователя страница 24 | Manualshive

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Walchem WDT400 Series Скачать руководство пользователя страница 24

5.7

Alarm (A or B) Menu

The Alarm menu screen will appear as follows:

Alarm OFF
Alarm LOW ALRM
Alarm HI ALRM

This is the % below the bleed set point that the LOW ALARM will activate. If the set point is 1000

Set % Low

and the % Low setting is 20 then the Low alarm will activate at 800.

This is the % above the bleed set point that the HIGH ALARM will activate. If the set point is 1000

Set % High

and the % Low setting is 20 then the High alarm will activate at 1200.

Alarm (A or B) Menu

Possible status screens

A: 2000



S 77°F

Alrm

HI

ALRM

EXIT

ENTER

Alarm

OFF

NEXT

PREV.

Alarm

LO ALRM

Alarm

HI ALRM

Alarm
Alarm % High

20

HI ALRM

Alarm

HI ALRM

Alarm % Low 20

Figure 13 Alarms (A or B) Menu

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Содержание WDT400 Series

Страница 1: ...A L C H E M IWAKI America Inc WDT400 Series Dual Cooling Tower Conductivity Controller Instruction Manual Five Boynton Road Hopping Brook Park Holliston MA 01746 USA TEL 508 429 1110 FAX 508 429 7433...

Страница 2: ...chanical parts and electrodes from date of delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is used in accordance with instructions fu...

Страница 3: ...tup 11 4 6 Shut Down 11 5 0 OPERATION 12 5 1 Main Menu 12 5 2 Conductivity A or B Menu 14 5 3 Temperature A or B Menu 16 5 4 Bleed A or B Menu 17 5 5 Feed A or B Menu 18 5 6 WM1 and WM2 Menu 20 5 7 Al...

Страница 4: ...o the conductivity reading are available for all models Any set point may be viewed without interrupting control Each set point change will take effect as soon as it is entered An access code is avail...

Страница 5: ...one group total current for this group must not exceed 6A 4 20 mA 0 1 or 2 optional Fully isolated 600 Ohm max resistive load Resolution 001 of span Accuracy 1 of reading Agency Approvals Safety UL 61...

Страница 6: ...ed Cycle Time Mode C 10 minutes 59 min 59 sec Time per Contact Mode D 1 second 59 min 59 sec Contacts by Mode D 1 contact 100 contacts Time Limit Mode D E 1 minute 99 min 59 sec Time Vol Mode E 1 seco...

Страница 7: ...uires the following clearances Top 2 50 mm Left 8 203 mm Right 4 102 mm Bottom 7 178 mm 3 3 Installation Once the WDT series controller is mounted the metering pumps may be located at any distance fro...

Страница 8: ...WER BLEED METERING VALVE PUMP HEAT EXCHANGER System A Cooling Tower Controller www walchem com PREV NEXT ENTER EX T COOLING TOWER BLEED VALVE METERING PUMP HEAT EXCHANGER System B Figure 1 Typical Ins...

Страница 9: ...e between 22 26 AWG Shield should be terminated at the controller ground stud see figures 3 and 4 CAUTION 1 There are live circuits inside the controller even when the power switch on the front panel...

Страница 10: ...ptional CONDUCTIVITY ELECTRODE B CONDUCTIVITY ELECTRODE A FLOW SWITCH A OPTIONAL POWER BLEED A ALARM 4 20 mA 1 optional FLOW METER B OPTIONAL FLOW SWITCH B OPTIONAL FLOW METER A OPTIONAL FEED A Figure...

Страница 11: ...R 1 IN IN IN IN IN IN IN COND RED BLK 5V T T SYSTEM B L1 L2 N COND T T 5V RED BLK WHT 120V BLU 240V SYSTEM A SHIELD SYSTEM B SYSTEM A COND T T 5V RED BLK FLOW SW 1 FLOW SW 2 FLOW MTR 2 FLOW MTR 1 IN I...

Страница 12: ...120V BLU 240V WHT 120V BLU 240V WHT 120V BLU 240V WHT 120V BLU 240V BLK 120V BRN 240V BLK 120V BRN 240V IF MOTORIZED BALL VALVE BLK 120V BRN 240V BLK 120V BRN 240V WHT 120V BLU 240V BLK 120V BRN 240V...

Страница 13: ...pper left side tower B on the upper right side and current operating conditions The operating conditions that are displayed on the bottom line of this display are Temp Err A Temp Err B Cond Err A Cond...

Страница 14: ...see Section 5 11 for operation With the access code enabled any user can view parameter settings but not change them Note that this provides protection only against casual tampering Use a lock on the...

Страница 15: ...our WDT controller determines which menus are available as you scroll through the settings Certain menus are only available if you select certain options Main Menu Top Level Tower A Tower B Access Cod...

Страница 16: ...Holding A B Stops Conductivity Control These conditions trip the diagnostic alarm relay Operation Press Enter key to enter menu Press Exit key to exit menu Blinking fields may be edited with the adjus...

Страница 17: ...you change the units you will need to change your Bleed settings ppm C F This is the ppm Conversion Factor or multiplier This is typically 0 666 but can be changed to accommodate various requirements...

Страница 18: ...ond Samp 10 00 Cond Hold 59 Calibrate Cond 1333 ppm ENTER EXIT ENTER EXIT NEXT PREV ENTER EXIT ENTER EXIT Cond Xtend 10 00 1 1 1 1 2 ENTER EXIT 2 2 2000 Interval H 3 59 Cond 2000 S Cond S Duration 2 0...

Страница 19: ...ch that of the water Units You may choose to display temperature in C or F Press ENTER and the Up or Down Arrow keys to change the temperature units for display Mode Press ENTER and use the UP or DOWN...

Страница 20: ...1500 S cm and the Dead Band is 200 S cm The bleed output turns ON when the conductivity reading is greater than 1500 but does not turn OFF until the conductivity drops below 1300 Time Limit This menu...

Страница 21: ...ed output will be ON Feed A NO FLOW Indicates that Feed control has been suspended because there is presently no flow past the flow switch Feed A TIMEOUT Indicates that the feed lockout timer in the B...

Страница 22: ...on the output will not turn ON regardless of the feed mode selected Possible status screens Chem Feed Mode Bleed Feed Chem Feed Mode Feed of Time Chem Feed Mode Feed of Bleed Chem Feed Mode Water Cont...

Страница 23: ...er meter K Factor Only appears if the Feed relay is set to Feed on Paddlewheel Enter the number of pulses per unit volume that the paddlewheel sensor sends out This value is usually printed on the sen...

Страница 24: ...20 then the Low alarm will activate at 800 This is the above the bleed set point that the HIGH ALARM will activate If the set point is 1000 Set High and the Low setting is 20 then the High alarm will...

Страница 25: ...Time Mon 10 20 Set Time Press ENTER to set the Time Use the arrow keys to adjust the day and time and then press ENTER to store or EXIT to discard 2000 S 68 F Time Sat 12 15 Time Sat 12 15 Set Clock S...

Страница 26: ...rent output of the 4 20mA card is 9 20 mA Set 4mA Pt This conductivity setting will correspond to a 4 mA output from the controller Set 20mA Pt This conductivity setting will correspond to a 20mA outp...

Страница 27: ...dicates that the access code is disabled No access code is required to change any setting Access Code REQ Indicates that the access code is required to alter settings Access Code OK Indicates that the...

Страница 28: ...the front panel of the controller Press the Enter key to download the file from the controller to the disk The file name for the Current Datalog will be Datalog serial number date time csv using the d...

Страница 29: ...n the front panel of the controller Press the Enter key to import the configuration file from the stick to the controller The file name must have an ini extension in its name The controller will displ...

Страница 30: ...he file was successfully imported from the USB disk the controller will display Transfer Success The controller will automatically reboot and come up with the new software installed If the software up...

Страница 31: ...in step 1 above If the variance in readings is greater than 5 increase the frequency of electrode cleaning If there is less than 5 change in the reading the electrode was not dirty and can be cleaned...

Страница 32: ...nductivity alarm set point If your unit is wired for alarm output the alarm relay will trip The controller will continue to check the conductivity and the bleed and or feed outputs will be allowed to...

Страница 33: ...itions Increase Bleed Time Limit Bleed flow rate too low Check for clogged strainer Check for insufficient pressure differential Bleed valve not opening Check for faulty bleed valve Check bleed valve...

Страница 34: ...ection 7 3 If still at zero problem is with controller Consult the factory If the readout is stuck at another number Possible Cause Corrective Action Dirty or faulty electrode Evaluate electrode secti...

Страница 35: ...lock that has the black hot wires from all of the pigtails TB2 This simply pulls up off some metal pins Check these pins for corrosion If they seem coated with anything scrape off the coating by repla...

Страница 36: ...nline or submersion 20ft 6 1m cable 2 Two graphite electrodes flow switch manifolds 20 ft 6 1m cable 4 Two high pressure electrodes glands 10 ft 3m cable 5 Two high pressure electrodes flow switch man...

Страница 37: ...FIVE BOYNTON ROAD HOPPING BROOK PARK HOLLISTON MA 01746 USA TEL 508 429 1110 FAX 508 429 7433 Web www walchem com...

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