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PD138 Minimux

®

 II Temp & Process Scanner 

Instruction Manual 

17 

ALARM-IN CONNECTIONS 

Each channel on the PD138 has its own Alarm-In line that provides 
independent alarm indication capability for each channel. The alarm 
input lines of the PD138 are normally high (pull-up to 5V). Relay contacts 
from a Precision Digital meter or a low level logic output from a PLC can 
be used to drive the PD138 alarm input lines.

 

 

Note: 

Under normal condition the NC contact of the PD6000 is opened 
(failsafe). When the PD6000 goes to alarm the corresponding relay 
transfers connecting the NC and C contacts together causing an alarm 
condition to be detected on the PD138. 

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Summary of Contents for Minimux II

Page 1: ...djustable Dwell Time for Each Channel Independent Alarm Input for Each Channel First Out Alarm Indication Alarms Indicated by LEDs Built in Horn and Relay Built In 85 dB Horn with Silence Pushbutton S...

Page 2: ...n personal injury or property loss Anyone using this product for such applications does so at his her own risk Precision Digital Corporation shall not be held liable for damages resulting from such im...

Page 3: ...TOP GO CONNECTIONS 19 PROGRAMMING OVERVIEW 19 Front Panel Pushbuttons and Status LED Indicators 19 Programming Dwell Time 21 Programming Dwell Time for Multiple PD138 System 22 Returning to Four Secon...

Page 4: ...Sequence F2A 30 Acknowledge 31 Stop On Alarm 32 MESSAGE LABELS 33 MOUNTING DIMENSIONS 34 Table of Contents Figure 1 Panel Cutout and Mounting 10 Figure 2 Connector Labeling for PD138 11 Figure 3 Case...

Page 5: ...s can be connected together to scan an unlimited number of points Front panel push buttons allow for easy programming of independent adjustable dwell times as well as rapid channel skipping The built...

Page 6: ...tainless Steel NEMA 4X Enclosure Through Door PDA2603 V 3 Stainless Steel NEMA 4X Enclosure Through Door PDA2604 V 4 Stainless Steel NEMA 4X Enclosure Through Door PDA2605 V 5 Stainless Steel NEMA 4X...

Page 7: ...nds The scan may be resumed by pressing and releasing the STOP GO button quickly less than 0 5 seconds Alarm Input Independent alarm input for each channel Input Impedance 25 Kohm typical pull up to 5...

Page 8: ...VDC 9 18 VAC 50 60 Hz 2 W LED Test All LEDs are tested on power up Enclosure 1 8 DIN high impact plastic UL94V 0 Front Panel NEMA 4X panel gasket provided Warranty 3 years parts and labor SETUP AND P...

Page 9: ...d be performed only by trained service personnel INSTALLATION There is no need to remove the instrument from its case to complete the installation wiring and setup Unpacking Remove the instrument from...

Page 10: ...so that there is 6 4 mm or less through the bracket Slide the bracket toward the front of the case and remove Insert the unit into the panel cutout Install mounting brackets and tighten the screws ag...

Page 11: ...ctions for the Minimux II are made to a 23 position removable screw terminal connector supplied with each unit The following table gives the input and output terminal assignments SCREW TERMINAL CHANNE...

Page 12: ...third wire of each sensor to the TP terminal and to the temperature meter Connect like color leads to terminals 1A 1B 2A 2B 3A 3B etc Connect odd color leads to terminal TP Connect outputs A B and TP...

Page 13: ...tup for 1 5 V input and the complete system should be calibrated together The PD6000 s internal transmitter power supply may be used to power the transmitters However only the transmitter that is curr...

Page 14: ...PD138 Minimux II Temp Process Scanner Instruction Manual 14 Voltage Inputs www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 15: ...re two or more Minimux II connected together No special cable is needed to connect multiple PD138s together There are three connections that must be made to connect multiple PD138s into a system 1 Mas...

Page 16: ...in the system or via external switches However each Minimux II s relay will operate independently so it may be necessary to wire them in parallel to drive a single alarm device Also each Minimux II s...

Page 17: ...p to 5V Relay contacts from a Precision Digital meter or a low level logic output from a PLC can be used to drive the PD138 alarm input lines Note Under normal condition the NC contact of the PD6000 i...

Page 18: ...nnections Refer to the diagram below to wire up the alarm relay When connecting two or more Minimux II together it may be necessary to wire the relays in parallel to drive a single alarm device For fa...

Page 19: ...ACK and STOP GO functions PROGRAMMING OVERVIEW The PD138 is programmed for scanning and alarm functions using the front panel buttons and a three position DIP switch The DIP switch is used to program...

Page 20: ...Indicators Button Description Silence Horn Acknowledge Alarm Stop Go LED Description Red Channel Alarm Status Indicators Green Current Channel Yellow Current Channel in Alarm Condition Power Indicate...

Page 21: ...but will turn red during the actual programming mode 4 Unit will beep and channel 1 will illuminate indicating PD138 is ready to be programmed 5 Dwell times are programmed with the STOP GO button Pre...

Page 22: ...power while holding the STOP GO button 3 Release the STOP GO button two seconds after power has been applied All dwell time programming is stored in non volatile memory for 10 years if power is lost P...

Page 23: ...to respond to alarm conditions either via Sequence A or Sequence F2A Refer to page 26 for a description of these sequences DIP Switch 2 Position Alarm Sequence OFF A Factory Default Setting ON F2A Re...

Page 24: ...ve been made to the PD138 and it has been programmed for the particular application it operates pretty much on its own The only intervention it might receive from an operator would be to stop the scan...

Page 25: ...n horn of the unit where the alarm condition occurred will activate Alarm Relay In a multiple unit system only the alarm relay of the unit where the alarm occurred will transfer The user can wire the...

Page 26: ...momentary and maintained alarms as well as which alarms occurred first on a complete scan cycle First Out Alarms F2A The main feature of Sequence F2A is its ability to indicate which alarms occurred f...

Page 27: ...nds 3 An alarm relay transfers The way red LEDs behave during an alarm depends on whether the PD138 was programmed to respond to alarms via Sequence A or Sequence F2A Both of these sequences handle bo...

Page 28: ...or the appropriate settling time it poles channel 3 s alarm in line and finds it to be in alarm The LED starts flashing yellow red and green the horn sounds and the alarm relay transfers The unit cont...

Page 29: ...one momentary and turn off the red LED Channel 3 s LED will appear green before the Minimux II moves on to channel 4 If Maintained Alarm When the Minimux II returns to channel 3 the LED will appear ye...

Page 30: ...ttling time it poles channel 3 s alarm in line and finds it to be in alarm The LED starts flashing yellow red and green the horn sounds and the alarm relay transfers Channel 5 is also found to be in a...

Page 31: ...channel it will check the alarm in line and find the alarm is still there and it will not turn the red LED off The Minimux II continues to scan and again returns to channel 3 the LED will appear yell...

Page 32: ...to silence and the relay to transfer 2 Remain on the alarmed channel and acknowledge the alarm by pressing and holding the STOP GO button for more than 0 5 seconds to freeze the scan and then pressing...

Page 33: ...the form below Horizontal mounting labels available see page 10 for sample Make copies of this page for additional message labels Please include label with my order I have the PD138 please send ASAP...

Page 34: ...Temp Process Scanner Instruction Manual 34 MOUNTING DIMENSIONS Figure 3 Case Dimensions Side View Figure 4 Case Dimensions Top View www GlobalTestSupply com Find Quality Products Online at sales Glob...

Page 35: ...PD138 Minimux II Temp Process Scanner Instruction Manual 35 NOTES www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

Page 36: ...PD138 Minimux II Temp Process Scanner Instruction Manual LIM138_C SFT053 Ver 1 0 up 10 15 www GlobalTestSupply com Find Quality Products Online at sales GlobalTestSupply com...

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