MC7004531J

Timing Mode: **MULTIFUNCTION** Category: **TIMER WITH RELAY** Series: **MC453** 

PELCO COMPONENT TECHNOLOGIES • 855 227 3526 

## **CUBE RELAY, MULTIFUNCTION** 

## **MC453 Timers** 

MC453 series are multifunction timers with dipswitch adjustments and relay output. 

Offering five timing modes in a single unit and time delay settings from 0.1 second to 1023 minutes, the MC453 series is a cost-effective solution for myriad applications. 

Set to select Delay on Make, Delay on Break, Single Shot, Interval, or Percentage timing. 

Provides timed sequencing of functions such as liquid dispensing, moisture purging, stirring, controlled lighting, feed distribution, water and air circulation, and many more. 

## **Timing Modes** 

**1 Delay on Make** Application of input voltage to the timer starts the time delay. At the end of the time delay the load is energized. To reset, remove the input voltage from the timer. 

**2 Delay on Break** Input voltage is applied continuously. Upon closure of the initiate switch the load is energized and remains energized as long as the switch is closed. When the initiate switch opens, the load INPUT ON VOLTAGE OFF J | remains energized and the time delay is started. At the end of the time delay the load is de-energized and the timer INITIATESWITCH OFFON rT |! is ready for another cycle. 

**3.1 Single Shot** Input voltage is applied continuously. Upon closure of the initiate switch the load is energized and the time delay is started. At the end of the time delay the load is de-energized and the timer is ready for another cycle. Maintained closure of the initiate switch will not affect the time delay period. 

**3.2 Interval** Replace the initiate switch with a permanent electrical connection between terminals marked SW and (–). Application of input voltage to the timer energizes the load and starts the time delay. At the VOLTAGEINPUT OFFONTL end of the time delay the load LOAD OFEON | | is de-energized. ! Time Delay i To reset, remove the input voltage from the timer. 

**4 Percentage** Input voltage is applied continuously. Upon closure of the initiate switch the load is energized and the ON time delay is started. When ON time delay expires, the load is de-energized and the OFF time delay is started. Load cycles ON / OFF until initiate switch opens or input voltage is removed. Opening the initiate switch turns 

the load off and resets the timer. 

## **SPECIFICATIONSFEATURES** 

n **Multifunction, accurate timing** 

n **Totally encapsulated for protection from harsh environments** 

n **Binary dipswitch adjustable** 

n **100% operational testing** 

n **Wide selection of timing ranges** 

n 

n **Wide selection of AC and DC input voltages** 

n **RoHS compliant** 

120414 

**BASIC WIRING AND DIMENSIONS** 

120414 

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## **SPECIFICATIONS** 

**Input Voltage:** 24, 120 or 230VAC, 50 / 60Hz, ±10%; 12 or 24VDC ±10% 

**Output current:** 25A resistive, 1.5HP, max. 

**Time delay:** Adjustable from 0.1 second to 1023 minutes, _select Range via Function dipswitches C and D; set Delay via cumulative Time Delay dipswitches_ 

**Timing function:** Multiple timing modes available _select via Function dipswitches A and B_ 

**Repeatability:** 0.1% or 20mS, whichever is greater 

**Time delay accuracy:** 2.5% or 50mS, whichever is greater 

**Recycle / Start-up time delay:** 250mS, typ. 

**Temperature Ranges:** _Storage:_ -40°C to +85°C 

_Operating:_ -25°C to +60°C 

## **VOLTAGE SELECTION** 

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Mode of  Series Part Input<br>Operation Number  Voltage<br>Multi- MC1004531J 120VAC<br>function  MC453  MC2004531J 230VAC<br>and<br>MC3004531J 24VAC<br>Resettable<br>MC7004531J 12VDC<br>MC4004531J 24VDC<br>**----- End of picture text -----**<br>


**Mechanical:** 2.5” x 2.5” case, Surface mount with one #8 or #10 screw 

0.25” QC terminals for input and output 

**Protection:** Encapsulated circuitry, MOV transient protection 

## **SETTINGS** 

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 Dipswitch  Function<br>1.  Configure Timing Mode  A    B  Timing Mode<br>settings via Function<br>0    0  Delay on Make<br>dipswitches A and B<br>0    1  Delay on Break<br>1    0  Single Shot / Interval<br>2.  Configure Time Range  1    1  Percentage<br>settings via Function  C    D  Time Range<br>dipswitches C and D<br>0    0  0.1s–102.3s<br> a.  Time range selection   0    1  1s–1023s<br>for DOM, DOB, SS/I 1    0  10s–10230s<br>1    1  1m–1023m<br> OR<br>C    D  ON Time / Cycle Time<br> b.  Time range selection   0    0  0.1s–99.9s/100s<br>for Percentage 0    1  1s–999s/1000s<br>1    0  10s–9990s/10000s<br>1    1  1m–999m/1000m<br>**----- End of picture text -----**<br>


3.  Combine Time Delay dipswitches to achieve desired time delay 

For Percentage function, ON time selection higher than max ON time is limited to max ON time. 

2747 Rte 20E • Cazenovia, NY • 855 227 3526 • airotronics.com 

A DIVISION OF PELCO COMPONENT TECHNOLOGIES