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MODES OF OPERATION

 

Die Sentry can be in two basic Modes of Operation - SETUP Mode 
and RUN Mode. Most of the time the key switch should be in the 
RUN position for complete process monitoring.

  

SETUP MODE

  

This mode is used when installing probes or changing dies and 
coils. In SETUP Mode, faults will be detected and displayed but will 
not stop the press. If the IN-CYCLE is being used, the Die Sentry 
keeps an internal count while in SETUP Mode and will not allow 
more than 50 cycles to be run in the SETUP Mode. After 50 parts 
have been run in SETUP Mode, the display will flash "RUN" and the 
fault output will be turned OFF. If it is desired to run more parts in 
SETUP Mode, move the key switch to the RUN position and then 
back to SET - This will allow 50 more cycles. During normal press 
operation, the Die Sentry should require little, if any, operator 
control. However, if probe faults occur, they MUST be reset using 
the RESET button.

 

To change the settings for a probe or view the current settings, put 
the Die Sentry into SETUP Mode using the key switch and select 
the desired probe using the SELECT button. Once the desired 
probe is selected, its current settings should be displayed in the 
probe TIME/MODE window. Use the UP & DOWN arrow buttons to 
change the current settings. The settings are arranged in the 
following order:

 

9.000 (Nine Seconds MAX)

 

0.003

 

0.002

 

0.001

 

"OFF"(Probe NOT in USE)

 

"LS"(Probe in CAM MODE)

 

"OP"(NORMALLY OPEN MODE)

 

"CL"(NORMALLY CLOSED MODE)

 

By pressing the DOWN arrow once from 0.001, the display will read 
"OFF." Pressing the DOWN arrow again will go to "LS" and so on. 
The maximum time setting is nine (9.000) seconds.

 

The Die Sentry stores the settings into "NON-VOLATILE" memory 
so they are not lost during power outages. The values are only 
stored when the key switch is moved from SET to RUN. However, 

Summary of Contents for Rexcon Die Sentry

Page 1: ... which can be independently programmed into any one of four modes of operation This manual contains instructions on installation and operation of the Die Sentry MOUNTING A DEVICE There are a few general things to be considered when mounting any of the machine monitoring devices in the Rexcon family The suggestions that follow should always be considered when a new installation is made DIRT All Rex...

Page 2: ...nd all wires act as antennas so keep them as short as possible Coils of unused wire even small ones can amplify noise to problem causing levels Finally the more wires there are the more chances that one of them is radiating a lot of noise DO NOT use the Rexcon device as a junction box Keeping the wires in the enclosure to a minimum both in length and number can greatly reduce the risk of radiated ...

Page 3: ...the two is the negative or ground terminal The input modules have an LED located on top of the modules to indicate when the module is ON The module will go ON when voltage is sensed across its two input terminals The DC input module s two input terminals are polarity sensitive The output modules act as switches and also have an LED on top to indicate they are ON or in this case closed When the LED...

Page 4: ...five probe inputs does not exceed 1 AMP To use the probe inputs make sure that the terminal labeled RET is connected to the machine s frame Whenever a probe input is touched to the machine the probe circuit will be completed and the probe input will go ON NOTE The probe inputs should never be wired in a way that will connect them to anything other than ground Severe damage will result Always use D...

Page 5: ...iring FAULT CONNECTIONS The Die Sentry main board has space for two 2 outputs but only one is actually used The output labeled as FAULT 1 is used to stop the press whenever a fault condition has been detected by the Die ...

Page 6: ... Detection Likewise if a Normally Closed mode is intended as an OUT of STOCK Detection but can be used anywhere a Normally Closed probe is needed TIMED and CAM modes are more complex in their operation and are the main subject of this section Both TIMED and CAM modes have a set Window in which the probe must be seen as ON The simpler of the two Modes of OPERATION is the CAM or Limit Switch Mode In...

Page 7: ...D MODE of OPERATION is basically the same as the CAM MODE with one exception the length of the examine period is determined by the user entered TIME In TIMED Mode the operator or supervisor sets a probe time from 0 001 seconds up to ...

Page 8: ...begins waiting for the specified probe TIME setting At the end of the SET TIME the examine period ends The probe must still be seen as ON during the examine period or a probe fault will occur just as in the CAM MODE The reported probe times are still the amount of time it took the probe to go ON after the examine period began A normal case is given below ...

Page 9: ...probe operation is that of a probe or limit switch stuck ON or OFF while in TIMED OR CAM modes In both modes if a probe has not changed states before the next examination period begins a fault will occur and a probe time of zero will be reported ...

Page 10: ...ights indicates that a given probe is ACTIVE The second column Yellow lights indicates that a limit switch for a given probe is ACTIVE The third column Red Lights indicates any probe faults For information on the operation of the probes refer to the section on PROBE THEORY B Probe Selector Lights These lights display which probe is currently being displayed or set C Probe TIME MODE Window The prob...

Page 11: ...entry should require little if any operator control However if probe faults occur they MUST be reset using the RESET button To change the settings for a probe or view the current settings put the Die Sentry into SETUP Mode using the key switch and select the desired probe using the SELECT button Once the desired probe is selected its current settings should be displayed in the probe TIME MODE wind...

Page 12: ... 4000 VRMS signals The part numbers and specifications for the previously mentioned modules are listed below MODULE STYLE OPTO PART NUMBER VOLTAGE RANGE MAX CURRENT RESIST IN LEAK OUT DC Input G4 IDC5D 2 5 28 V DC 25 mA 900 OHMS AC Input G4 IAC5 90 140 V AC 11 mA 14 KOhms DC Output G4 ODC5 5 60 V DC 3 A 1 mA AC Output G4 OAC5A 24 280 V AC 3 A 2 5 mA Output modules contain 250 Volt 3 AMP Fuses for ...

Page 13: ... False Sensing of probe during cycle Check to see NO other obstacle comes in contact with the probe Check probe light on unit to see if it comes on anytime other than when part is in place 5 Loss of Examine Light on unit for Check CAM switch contact closure for the a probe probe Check examine time for the probe PROBLEM PRESS DID NOT STOP WHEN IT SHOULD HAVE CAUSE REMEDY 1 False Sensing on probe be...

Page 14: ...ressure Adjust pressure 2 Feeder feeding too late in cycle Adjust feeder to advance material as soon as possible at low speed stroke per minute of press 3 Excess travel on Clutch Brake of press Adjust Clutch Brake air pressure to proper setting Adjust Clutch Brake braking pads Determine if Clutch Brake Assembly needs repair Slow press down ...

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