Star Micronics MP111MP-24G-A Carriage Motor Protection Method Against Mechanical Errors

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TR1

2SD2041 (ROHM)

 

HRT Type

 

 

R1

1 kΩ

 

 

R2

330 Ω

 

 

VH

23 V+VCE (Sat.) of

 

TR1=24 V

 

 

Fig. 8-3 Circuit to control drive circuit (example)

8.2 Carriage Motor Protection Method (Against Mechanical Errors)

If the carriage motor gets locked as a result of trapping foreign matter, etc. in the printer mechanism, a risk of damaging the motor due to flow of excess current to it is generated. Therefore, it becomes necessary to monitor the excess load status of printer mechanism, by detecting the cycle of timing signal 1 with timer, etc. Once the cycle of timing signal 1 becomes as given below, stop power being supplied to the motor.

a.Print interval: 2.57 ms or more/450 ∝ ms or less

b.Outside print interval: 257 ms or more

8.3 Other Notes

1.Do not attempt to print when the paper or ribbon cartridge are not loaded in the printer mechanism as this could damage the print head.

2.Do not store or use the printer mechanism at places of substantial dust, iron content, etc., or in oily atmosphere.

3.Wipe off dust, dirt, etc. from the printer mechanism, using a soft brush. Or, wipe with a piece of cloth dampened in alcohol.

4.Never inflict strong force on the printer mechanism. Otherwise, the frame or other parts may be dis- torted, rendering normal functioning impossible.

5.Avoid sudden changes in the ambient conditions like temperature, humidity, etc. even while they are hold in prescribed limits. If sudden change occurs, allow about 30 minutes for acclimatizing, before using the printer mechanism.

6.Never use the printer mechanism with condensation deposited onto it.

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Contents MP111MP-24G-A MP115MP-24G-A Page Contents General Description Principle of Operation ConfigurationConstruction OtherMP111MP External view MP115MP External view General Specifications Printing SpecificationsDetails of Character Dimentions Paper spec. & Print area Paper SpecificationsMP111 Ink Ribbon SpecificationsMP115 CR Motor + CMN VH Connector SpecificationsConnector connections Half font Forward printing Print TimingPrinting Timing ChartRelease action Transistor’s turn off delay time td 2 ∝ s Print Head SpecificationsTR1 Number of character per line Dot/chara 13 Print duty specific wires 14 Current waveform of the motor CR Motor SpecificationsTR2 16 Drive circuit of paper feed motor example Paper Feed Motor SpecificationsMP115MP only Ribbon Shift Solenoid RS-SOL Specifications19 Circuit of timing signal 1 example Timing Signal Detector SpecificationsPaper-out Detector PE-sig Specifications Home Position Detector HP-sig SpecificationsDimension and Weight Ribbon Position Detector RS-sig Specifications MP115MP only24 MP111MP External dimension unit mm 25 MP115MP External dimension unit mm Reliability Specifications Setting the Ribbon Cartridge Setting the Paper Setting the PaperRemoving the Paper SP2 InstallationInstallation space example unit mm Printer installation example unit mm Page Printer installation Operational Notes Power ON/OFF NoteOther Notes Carriage Motor Protection Method Against Mechanical ErrorsPower Supply Capacity 24 V Line5 V Line Paper Guide Option OptionsDistributed by
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