Dwyer MPC Manuale Utente

Bulletin L-20MERCOIDA Division of Dwyer Instruments, Inc. P.O. BOX 258 • MICHIGAN CITY, INDIANA 46361, U.S.A. Phone: 219/879-8000 • Fax: 219/872-905

SECUThreechangdisplavalueENTEsecurTo s euppeThe pfor fubook.PassINDEX & DOWN ARROW: Pressing these keys simultaneouslywill allow backing up one me

SECURITY LEVEL SELECTIONThree levels of security are provided. The SECr menu item security level may be viewed orchanged at any time regardless of the

LEAD/LAG OPERATIONThe Mercoid®MPC pump controller is designed to easily operate a pair of pumps in themost efficient manner possible. The controller h

ep 2. Ifontrolmp 1ecure Setowme)henbothurnnotmp 2.leaailure.dWhenPCIn the Secure menu the value of PSFis programmed for the action of the MPC based on

ANALOG RETRANSMISSION OPERATIONThe analog retransmission allows the Process Variable to be sent as an analog signal toan external device. The signal m

l toDCeignalemA).nalemehehemenuholdrbyOPTION 232, 485 SERIAL COMMUNICATION OPERATIONThe serial communications options allow the control to be written

MENU SELECTIONSNotation Conventions for the MenusBecause of the number of features available in this control, information is included thatmay not appl

atuted:enuhisms. Ifs itsateofalueanceP1rn Pump 1 Run Time: Total ON Time for Pump 1 in HOURS since last reset (0000 - 9999 hours).P2rn Pump 2 Run Time

Secure MenuPress the INDEX key for 5 Seconds to start the menu. Press INDEX to advanceto the next menu item. Press UP ARROW or

nceD9to SCAL ed 180SUP Zero Suppression: Select 0n or 0FF. Factory default is 0n.0FF The input range will start at 0 (zero) Input.0n The input range w

SPECInputInputOutpContPowe132 tPoweAccuDispDispMemSeriaAmbF (40WeigFronLoopSeal OverAlarmSet PPoweTempComNormIsolaStoraAgenModbu1CONTENTSDimensions .

PrSt Pump Run Time Reset: Select 0n or 0FF. Selecting 0n will allow Pump Run Time to be reset in the Secondary menu while an 0FF selection will not al

set set SP2Ls wille lastly to theALARM TYPE AND ACTIONCaution: In any critical application where failure could cause expensive product loss orendange

Hi High Alarm Only. A1Hi appears in the Secondary Menu.HiLo High and Low Alarms. Both A1Lo and A1Hi appear in the Secondary Menu, and share the same A

y msand AL2 Alarm 2 function: Select 0FF, Lo, Hi, HiLo, SF, 0t, or SF0t. Factory default is Lo.0FF Alarm 2 is disabled. No Alarm 2 menu items appear i

FiLtDigital Filter: Select 0FFor1to 99. In some cases the time constant of the sensor, or noise could cause the display to jump enough to be unreadabl

f this.1.ee not ess e 0, d 24DisplayNodisplaylightedFA1LtEStCHECLorESP OutputsSet pointoutputs inactiveAlarms inactiveSet pointoutputs inactiveAlarms

PROGUse twant MenuPrimMenuSecoMenuSe25DisplayUFLor0FLCHEC CALArEA(Alternateswith PV)ArEASP OutputsSet pointoutputs activeAlarms activeSet pointoutpu

PROGRAMMING CHARTUse the charts on this and the next page to record the values in your application. You maywant to photocopy the pages if you plan to

Menu Item Default Set At DescriptionPSF AUtO Pump Seal Failure controller action (selectable automatic or manual reset)TESt On System Test (Selectable

etetr sfot)r sfot)28Menu Item Default Set At DescriptionPOL 0.0 Process Output Low (default is in feet)LorE rE Local/Remote for computer communication

SPECIFICATIONSInputs: 4 to 20 mA DC or 2.0 to 10.0 V DC selectable.Input Impedance: Current input: 10 ohms, Voltage input: 100K ohms.Output Ratings:Co

MenSecuExample:• Keep Empty, two pump (duplex)• Depth 25 feet• Pump 1: Start at 6 feetStop at 3 feetPump 2: Start at 12 feetStop at 9 feet• Low le

Menu Item Default Set At DescriptionSecurity SelectionScale High value (default is in feet)Low value (default is in feet)Decimal Point PositioningSet

Menu Item Default Set At DescriptionAL1 HiAlarm 1 Function (selectable off, lo, hi, hilo, sf, ot, or sfot)A1t Alarm Type 1 (selectable abs (absolute)

RS-232 Modus®-RTU Serial Communications. Allows remote computer to read and write all control parameters.232 3GETTING STARTED1. Install the control

4basictionalptionsrior topaces be aes areINSTALLATIONMount the instrument in a location that will not be subject to excessive temperature, shock,or vi

5Pump 1 Over TempPump 2 Over TempVoltageCurrentSealSensorInputsPump 1Alarm 1ContactsAlarm 2ContactsPump 1OutputPump 2Output24 VDC@ 50 mAIsolatedPump 2

6Connect Jumper between terminals 2 and 12Level TransmitterConnect Transmitter Plus (+) to terminal 11Connect Transmitter minus (-) to terminal 3WIRIN

7WIRING FOR 485 AND 232 SERIAL COMMUNICATION OPTIONSWire power and outputs as shown on page 5. Wiring for options is shown in Figure 4 below.All wirin

below.85.iring.FRONT PANEL FUNCTIONSKey functions are as follows:INDEX: Pressing the INDEX key for 2 seconds will bring up the Secondarymenu st