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Large Display Temperature Meters

Instruction Manual

57

Figure 24. PD755 Options PCB Installation

Instructions:

1.  Disconnect power to the meter prior to removing the front cover.
2.  Remove Display PCB and detach PCB from ribbon cable connector.
3.  Remove Main PCB from the base by removing four mounting screws.
4.  Install Options PCB standoffs, using provided hex nuts.
5.  Connect flexible cable connector J2 to J3 connector on Main PCB.
6.  Install 4 mounting screws to secure Options PCB to standoffs.
7.  Reassemble meter prior to applying power. Front cover may remain off until

programming is completed to allow installation of lockout jumper (see Figure
31, page 61).

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Содержание PD755

Страница 1: ...2 3 1 0 and 0 8 High Display Resolution Thermocouples 1 Type T T C Displayed to 1 or 0 1 RTDs Resolution 1 or 0 1 Field Selectable Displays F or C Field Selectable No Calibration Necessary Factory Ca...

Страница 2: ...Large Display Temperature Meters Instruction Manual 2 Visit our website http www predig com...

Страница 3: ...17 Reassembling the Meter 18 Reassembling the PD755 18 Reassembling the PD756 18 Reassembling the PD757 18 Jumper Configuration 19 Input Selection and Lockout Jumpers Main PCB 19 Relay Acknowledge Ena...

Страница 4: ...g Relays SetuP 35 Alarm Set and Reset Points Programming 36 Programming Alarm Points Using Set Points setpts Menu 37 Alarm Set and Reset Programming Confirmation 37 Isolated 4 20 mA Output Transmitter...

Страница 5: ...s for PD755 and PD756 53 Explosion Proof Control Stations 55 OPTION CARD REMOVAL INSTALLATION 56 Option Card Installation in PD755 56 Option Card Installation in PD756 58 Option Card Installation in P...

Страница 6: ...emoving the PD755 Display PCB 56 Figure 23 PD755 Options PCB Standoffs Location 56 Figure 24 PD755 Options PCB Installation 57 Figure 25 PD756 Option PCB Installation 58 Figure 26 PD756 Option PCB Ins...

Страница 7: ...models to power the transmitter output Ordering Information Model PD755 115 230 VAC MODEL 24 VDC MODEL DESCRIPTION Option Card PD755 N PD755 2 N No Options PD755 44 PD755 2 44 2 Relays PD474 PD755 45...

Страница 8: ...D757 2 38 4 Relays 4 20 mA Output PD378 Option Cards When Ordered Separately Accessories Control Stations Model Switches Labels PDA2451 E 1 ENTER PDA2451 A 1 ACK PDA2451 R 1 RESET PDA2452 EA 2 ENTER a...

Страница 9: ...the possibility of meter failure or power failure WARNING Hazardous voltages exist within enclosure Installation and service should be performed only by trained service personnel AVERTISSEMENT Les pi...

Страница 10: ...o 750 C 2 F 1 C Type K T C 328 to 2498 F 200 to 1330 C 2 F 1 C Type T T C 330 0 to 760 0 F 200 0 to 404 0 C 2 F 1 C Type E T C 328 to 1832 F 200 to 1000 C 2 F 1 C Type R T C 32 to 3213 F 0 to 1767 C 5...

Страница 11: ...t NEMA 3 4 7 9 For use in hazardous locations Class I Groups C D Class II Groups E F G suitable for Division 1 and Division 2 Two NPT holes provided at opposite sides Up to four holes can be provided...

Страница 12: ...ton Manual reset resets all manually resetable relays BUILT IN SUPPRESSION A built in suppressor snubber to prolong the life of the relays protects each relay contact The suppressor provides a degree...

Страница 13: ...A displays The output will be linear example 4 mA 0 20 mA 1000 output is 6 mA at 125 ACCURACY 0 1 F S 004 mA 25 C NO EQUIPMENT NEEDED The 4 20 mA output from the Temperature Meter is calibrated via th...

Страница 14: ...temperature reached by the process since last cleared reset InPt 1 Input 1 Sets low input calibration low input signal must be applied to the meter InPt 2 Input 2 Sets high input calibration high inpu...

Страница 15: ...ory default on AC powered models b Labeling meter for power input 115 VAC or 230 VAC 24 VDC powered models are labeled as such at the factory 3 Connections Page 21 a Power connections b Signal connect...

Страница 16: ...meter prior to installing enclosure s cover 7 Install lockout jumper to prevent accidental changes to programmed settings Disassembling the PD756 When servicing the PD756 in a hazardous area all appr...

Страница 17: ...three screws Ribbon cable to Display PCB may be removed during meter installation Do not remove standoffs from Main PCB Main PCB is secured to enclosure s base with four mounting screws 5 Change volt...

Страница 18: ...B see Figure 29 on page 60 2 Replace the two mounting screws on the left side of the Display PCB 3 Tighten the two mounting screws on the right side of the Display PCB 4 To program the meter using the...

Страница 19: ...62 for PD757 Jumper JP1 Position Function RTD RTD Input TC Thermocouple Input Jumper JP2 Position Function LOCK Sets a lock on programming functions Relay Acknowledge Enable Display PCB Figure 34 on p...

Страница 20: ...electable for either 115 VAC or 230 VAC power Changing the voltage selection involves the removal of the front cover and the Display PCB then selecting 115V or 230V on switch S1 located on the Main PC...

Страница 21: ...ons 12 22 J2 Main PCB Power connections 12 18 J3 Main PCB Connections to Options PCB J4 Main PCB Connections to Display PCB J1 Options PCB 4 20 mA output 12 22 J2 Options PCB Connections to Main PCB J...

Страница 22: ...150 volt 60 C If using AWG 20 or smaller wire up to two wires may be connected to each terminal If using AWG 18 or larger wire only one wire may be connected to each terminal 4 Install conduit hubs t...

Страница 23: ...onnel Connecting AC power when meter is set up for DC power will result in damage to the instrument as well as endanger personnel Connect power to terminals L2 V and L1 V on screw terminal connector J...

Страница 24: ...ion connector J1 on the Main PCB This connector also includes connections for Enter Acknowledgement Hold Reading and Common For location of J1 refer to Figure 31 on page 61 for PD755 Figure 32 on page...

Страница 25: ...Large Display Temperature Meters Instruction Manual 25 Figure 5 Two Wire RTD Connections Figure 6 Thermocouple Connections...

Страница 26: ...old terminals on J1 Main PCB provide a convenient method to remotely access the following functions Terminal Function EN Programs meter via the front panel menu AK Acknowledges or resets relays exit m...

Страница 27: ...ions are made to removable screw terminal connectors located at J3 and J4 on the Option PCB Connections for the isolated 4 20 mA output option are made to J1 on the Options PCB For location of connect...

Страница 28: ...pan is recommended between the 4 and 20 mA outputs Ex 0 0 C 4 mA 50 0 C 20 mA The following diagrams illustrate the 4 20 mA output signal being powered from the Digital Temperature Meter s internal po...

Страница 29: ...n PCB Relay ACK enable JP5 Display PCB Fail safe J5 Options PCB For jumper array location see Figure 31 and Figure 34 on pages 61 63 for PD755 Figure 32 and Figure 35 on pages 62 63 for PD756 Figure 3...

Страница 30: ...not acknowledge relays during menu scroll Magnetic Reed Switch Functionality The PD756 has two magnetic reed switches located above the ENTER and ACK buttons The reed switches allow the user to progr...

Страница 31: ...cale Fahrenheit or Celsius SetuP Sets alarm set points for latching or non latching operation SetPtS Sets alarm set and reset points output Sets 4 and 20 mA output points if this option is installed d...

Страница 32: ...RTD input required and the display resolution The following table is used to define the types Type Number Type of Input Range Accuracy 0 Type J T C 328 to 1382 F 200 to 750 C 2 F 1 C 1 Type K T C 328...

Страница 33: ...ill then display F or C Press ENTER to select scale F or C Press the ACK button to quit menu scroll and return to indication mode The meter is now displaying the process temperature accurately 72f Sel...

Страница 34: ...jumper J5 located on the Options PCB 3 Setting the alarm set points for latching or non latching relay operation using SETuP menu 4 Setting set and reset points using SEtPtS menu a Setting set points...

Страница 35: ...TER to begin scrolling through the functions 72f When setup SEtuP appears press ENTER setup The display scrolls through set 1 Set 2 set 3 and set 4 for set point 1 through set point 4 setup Press ENTE...

Страница 36: ...eing programmed Each alarm will have a set point programmed first and then the reset point is programmed Each alarm set point may be programmed for either a high alarm or a low alarm with 0 100 deadba...

Страница 37: ...point 1 through alarm set point 4 Press ENTER when desired set point appears After Set 4 is displayed or programmed the meter will exit the SetptS set points menu and move to the next programming men...

Страница 38: ...gramming output Press ENTER then press ENTER again when the output output menu appears output Set the display for the value at which 4 mA is produced The green LED labeled 4 will be on indicating the...

Страница 39: ...ER again to program input offset value Example If display reads 85 F when the actual temperature is 80 F program an offset value equal to 5 F Then the display will indicate the actual temperature 85F...

Страница 40: ...mA output indicator None Refer to Figure 37 on page 65 for PD755 Refer to Figure 38 on page 65 for PD756 Refer to Figure 39 on page 65 for PD757 The four alarm status LEDs indicate alarm condition onl...

Страница 41: ...ed setting relative to temperature display is changed Display maximum and minimum temperatures Maximum temperature Press ENTER the first function displayed is HI t press ENTER again to display the max...

Страница 42: ...r the front panel LEDs and alarm relays will reflect the state of the input to the meter For instance if the meter is powered up and reads 500 the following table indicates how the alarm LEDs and rela...

Страница 43: ...rm s reset point the LED will go off if alarm point was set up for non latching operation Alarm status LEDs respond differently for latching and non latching relays For non latching relays LEDs are al...

Страница 44: ...normal condition Automatic manual reset at any time JP5 1 4 on Condition LED Relay Normal Off Off Alarm On On Ack On Off Normal Off Off In this application the meter is also set up for automatic manua...

Страница 45: ...et only after signal passes reset point JP5 1 4 off Condition LED Relay Normal Off Off Alarm On On Normal On On Ack Off Off In this application the meter is set up for manual reset only after the sign...

Страница 46: ...r each 1 A through closed contacts Notes 1 Use capacitors rated for 240 VAC 2 Snubbers may affect load release time of solenoid loads check to confirm proper operation 3 Install the RC network at the...

Страница 47: ...calibrate CalIb function appears CalIb Input 1 Inpt 1 will flash Apply the input corresponding to the low calibration point Here in this example calibration points will be 32 F and 1000 F It is recom...

Страница 48: ...100 RTD 0 00385 0 1 32 0 F 100 1148 0 F 320 12 590 0 F 215 61 8 100 RTD 0 00392 0 1 32 0 F 100 1127 0 F 320 89 580 0 F 215 87 9 100 RTD 0 00385 1 32 F 100 1148 F 320 12 590 F 215 61 10 100 RTD 0 00392...

Страница 49: ...ghten the fasteners see the screw mounting in Figure 44 on page 67 PD756 Mounting There are four mounting holes on the base of the enclosure They are used to mount the instrument to a wall The dimensi...

Страница 50: ...Figure 15 PD755 Panel Mounting Instructions 1 Insert the meter through the mounting plate 2 Mount assembly on panel 3 Secure with 4 brackets and 4 screws at corners of the meter 4 Use washers as neede...

Страница 51: ...struction Manual 51 PD757 Panel Mounting Instructions DECORATIVE BEZEL METER COVER PANEL METER BASE BRACKET Figure 16 PD757 Panel Mounting 14 30 363 4 97 126 15 32 389 3 23 82 0 250 6 4 Figure 17 PD75...

Страница 52: ...e meter base using the supplied hardware 3 Mount this assembly to the rear of the panel using supplied hardware 4 Secure the meter cover to the base 5 Attach decorative bezel to the panel Notes 1 Allo...

Страница 53: ...Large Display Temperature Meters Instruction Manual 53 Pipe Mounting Instructions for PD755 and PD756 Figure 18 755 Pipe Mounting Assembly Figure 19 756 Pipe Mounting Assembly...

Страница 54: ...plate 2 Two 2 U bolt kits 3 Four 5 16 18 x 1 screws 4 Four 5 16 18 hex nuts 5 Four 5 16 flat washers 6 Four 5 16 split washers 7 Four 6 32 x screws 8 Four 6 32 hex nuts 9 Four 6 32 split washers HARD...

Страница 55: ...an be labeled ENTER ACK and RESET External connections are available at J1 connector on the main PCB Figure 21 Explosion proof Control Station Dimensions in Inches and mm Number of Switches A B C D E...

Страница 56: ...To disable relays fail safe operation it is necessary to remove the Display PCB to gain access to the Options PCB Option cards may be ordered separately Refer to the following instructions and illust...

Страница 57: ...le connector 3 Remove Main PCB from the base by removing four mounting screws 4 Install Options PCB standoffs using provided hex nuts 5 Connect flexible cable connector J2 to J3 connector on Main PCB...

Страница 58: ...isplay PCB and detach PCB from ribbon cable connector Display PCB may be removed without removing the faceplate 3 Remove Main PCB from the base by removing four mounting screws 4 Install Options PCB s...

Страница 59: ...ont cover 2 Remove Display PCB and detach PCB from ribbon cable connector 3 Remove two right side standoffs and plastic washers discard plastic washers 4 Install Options PCB using the two standoffs re...

Страница 60: ...Large Display Temperature Meters Instruction Manual 60 MODEL SENSITIVE ILLUSTRATIONS Removing the Display PCB Figure 28 Removing the Display PCB on PD755 Figure 29 Removing the Display PCB on PD756...

Страница 61: ...Large Display Temperature Meters Instruction Manual 61 Figure 30 Removing the Display PCB on PD757 Locations of Connections and Jumpers Figure 31 PD755 Connectors and Jumper Location...

Страница 62: ...Large Display Temperature Meters Instruction Manual 62 Figure 32 PD756 Connectors and Jumper Location OPTIONS PCB MAIN PCB Figure 33 PD757 Connectors and Jumper Location...

Страница 63: ...rge Display Temperature Meters Instruction Manual 63 Jumper Arrays and Status LEDs Figure 34 PD755 Jumper Arrays and Status LED Identification Figure 35 PD756 Jumper Arrays and Status LED Identificati...

Страница 64: ...Large Display Temperature Meters Instruction Manual 64 On the bottom PCB Figure 36 PD757 Jumper Arrays and Status LED Identification...

Страница 65: ...Large Display Temperature Meters Instruction Manual 65 Front Panel Displays Figure 37 PD755 Front Panel Display Figure 38 PD756 Front Panel Display Figure 39 PD757 Front Panel Display...

Страница 66: ...Large Display Temperature Meters Instruction Manual 66 Overall Dimensions 3 7 95 Figure 40 PD755 Overall Dimensions Figure 41 PD756 Overall Dimensions...

Страница 67: ...rge Display Temperature Meters Instruction Manual 67 Figure 42 PD757 Overall Dimensions Wall Mounting Dimensions Figure 43 PD755 Wall Mounting Dimensions Figure 44 PD755 Wall Mounting Screw Installati...

Страница 68: ...Large Display Temperature Meters Instruction Manual 68 Figure 45 PD756 Wall Mounting Dimensions 13 49 342 6 13 54 344 0 0 25 6 2 dia typ 3 2 82 Figure 46 PD757 Wall Mounting Dimensions...

Страница 69: ..._ S N _______________ Date _________ Parameter Display Factory Setting User Setting Input type type J T C type 0 Input Offset Offset 00000F Temperature Scale F or C Fahrenheit f Alarm Points Setup set...

Страница 70: ...N Meter PD675 676 4 Digit Loop Powered NEMA 4X Meter FM CSA PD677 678 4 Digit Loop Powered Exp Proof Meter PD680 3 Digit Loop Powered 1 8 DIN Meter PD682 3 Digit Loop Powered 1 8 DIN Meter FM Approved...

Страница 71: ...Large Display Temperature Meters Instruction Manual 71 NOTES...

Страница 72: ...cal Support please call 800 610 5239 fax 508 655 8990 e mail support predig com For Sales Support or to place an order please call 800 343 1001 fax 508 655 8990 e mail sales predig com For Warranty Re...

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