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PM-23 PUMP MONITOR MANUAL

The  PM-23  Series  is  a  variety  of  pump  monitors 
designed  to  protect  single-phase  pumps  from  dry-
well,  dead-head,  jammed  impeller  ,waterlogged 
t a n k s ,   r a p i d   c y c l i n g ,   u n d e r   v o l t a g e   a n d 
over/underload. It includes an LCD display that shows 
the voltage, current, power consumption and faults. 
The trip point is user- adjustable and it also features 
automatic  calibration  allowing  adjustments  for 
speci c  pumping  applications,  reducing  the 
possibility  of    false  or  nuisance  tripping.  A  unique 
microcontroller-based  sensing  circuit  constantly 
monitors the power and line voltage for  uctuations. 

When  a  fault  is  detected  the  PM-23  after  the  trip 
delay—   will turn off the pump . The user can select 
automatic  or  manual  reset,  when  automatic  reset  is 
selected the PM will turn on the pump after the restart 
delay (delay is user -adjustable).  

The PM-23 is designed for  motors of up to 60Amp.

Description

Wiring

The  PM-23 is used only in 220 VAC single phase pumps 
with a current consumption in   the range of 16 to 60 
Amps. Connect the 220 V voltage supply to terminals 
TC and T1. Then connect the current transformer by 
plugging the black wire into terminal C2 and the blue 
wire  to  terminal  C1.  Insert  one  of  the  motor’s 
conductors  through  the  hole  on  the  current 
transformer  (CT ). 

The  current  transfomer  has 

polarity,  so  the  conductor  should  exit  the  side 
where the red mark is located and then connected 
to the pump as shown on the diagram below.

IF THE CURRENT TRANSFORMER IS NOT CONNECTED PROPERLY 

THE PM-23 WILL TAKE INCORRECT MEASUREMENTS.

L1

PUMP

CT

Ÿ

Protects pumps from dry-well, dead-
head, jammed impeller, waterlogged 
tanks, rapid cycling, under/over voltage, 
and over/underload.

Ÿ

Protects pump up to 60 Amp.   

Ÿ

Stores faults on memory.

Ÿ

LCD displays: Line voltages, current, 
power, failures, time delays, and a setup 
menu.

Ÿ

Auto calibration. 

Ÿ

Manual or automatic reset.

Features

C

 = Contactor

F

 =  8 Amp control fuse

CB

 = Circuit breaker

A1-A2

 = PM-23 normally open contact

L

 =  Operation indicator lamp

CT

 = Current transformer

T1

C1     

TC

A2     

A1   

C2   

PUMP

C

C

L1

L2

PUMP-MONITOR     

C  

C

 A1

A2

START    

STOP

L1

220 VAC

L

L2  

CB

CT

Typical Wiring Example

Blue

Black

Содержание PM-23

Страница 1: ...SINCE 1973 PUMP MONITOR MODEL PM 23 www nassarelectronics com The best solutions for automation and protection User Manual...

Страница 2: ...ephasepumps with a current consumption in the range of 16 to 60 Amps Connect the 220 V voltage supply to terminals TC and T1 Then connect the current transformer by plugging the black wire into termin...

Страница 3: ...i e the system is pumping water and the motor current is normal Try to achieve the maximum water flow rate Calibrationonafullyrecoveredwellisrecommended The calibration may be repeated to assure that...

Страница 4: ...UP button and the under voltage setup will be displayed if the voltage is under this value the pumpwillshutdown SET UNDER VOLTAGE 200 V SET OVER VOLTAGE 245 V Usethearrowbuttonstoadjustthedesiredvolta...

Страница 5: ...iggeringoftheunderloadprotection In this case underload should be adjusted manually to alowervalueinthesetupmenu The overload trip point is set to 125 of the power consumption during automatic calibra...

Страница 6: ...lizetheLEDindicators italsomakessetupadjustmentseasier Ifthisunit ispanelmounted thepanelneedstobeinstalledindoors Din rail mounting Mounting hole Mounting hole Mounting options Dimensions This unit c...

Страница 7: ...IN CONTRACT INFRINGEMENT NEGLIGENCE STRICT LIABILITY OTHER TORT OR OTHERWISE SHALL NASSAR ELECTRONIC S LIABILITY TO THE BUYER AND OR ITS CUSTOMERS EXCEED THE PRICE TO THE BUYER OF THE SPECIFIC GOODS...

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