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the Figure below. A two (2) position, straight through, terminal block 
is provided for AC power connection. The terminal block is located 
on the aluminum shelf at the edge of the circuit board. A fuse is 
located next to the terminal block (3 AMP Slow-Blow).

 

 

NOTE: Some newer devices may have a combination 
fuse/switch installed rather than the conventional fuse 
pictured above. If the fuse/switch is installed, remember to 
make sure that it is in the "on" position to operate the device.

 

I/O CONNECTIONS

 

All connections to the Rexcon Die Sentry are made through 
optically isolated I/O modules. The modules are available in several 
versions including DC input (WHITE), DC output (RED), AC input 
(YELLOW), and AC outputs (BLACK). Refer to Appendix A for 
detailed specifications about the various modules.

 

The DC modules are polarity sensitive. When wiring devices with 
two terminals per module, the leftmost of the two terminals is the 
positive terminal and the rightmost of 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 is "ON", the 
output is "ON" and current is allowed to flow between the module's 
two terminals. The DC output module's two terminals are polarity 
sensitive. The output modules also have a button type fuse on top. 
Refer to appendix A for replacement information.

 

DIE PROTECTION INPUTS

 

The Die Sentry allows for five probes which can be independently 
run in any of four modes - TIMED MODE, CAM MODE, 
NORMALLY OPEN, NORMALLY CLOSED. Unused probes can be 
turned off. Die protection requires one or two signals for each probe 
to be used. Each TIMED or CAM probe channel needs a probe 
connection and a limit switch connection. Limit switches may be 
optionally chained together to operate multiple probes from one 
signal. Probes that are to be used as NORMALLY OPEN or 

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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