Despatch LND Series with Protocol Plus Manual do Utilizador

LND SERIES OVEN WITH PROTOCOL PLUS ™ INSTRUCTION MANUAL C-187 PN 143377 REVISION I 2/2009

2 Specifications Dimensions Model Chamber Size in (cm) Capacity feet3 (liters) Overall Size in (cm) Maximum Number of Shelf Positions W D H W D H

3 Temperature Model LND 1-42 LND 2-11 LND 2-24 Time to Temperature 25°C - 100°C (approximate minutes with 25°C - 200°C no load) 25°C - 343°C 6 25

4 Power Line voltages may vary in some geographical locations. If your line voltage is much lower than the oven voltage rating, warm up time will b

5 THEORY OF OPERATION This section details the function and operation of assemblies and subassemblies on the Despatch LND Series Ovens. These ovens

6 Inert Atmosphere Theory The goal of the inert atmosphere oven is to reduce oxygen concentration levels to an acceptable level. This is accomplish

7 OVEN INSTRUCTIONS The INSTRUCTIONS section provides directions for unpacking, installation, operation and maintenance of the LND Series oven. Un

8 Set-up 1. Select the location for installing your oven. The oven must have a minimum 2 inch clearance in the rear to provide proper ventilation.

9 Figure 2. Recommended Water Connection on Despatch LND Series Ovens a. Make drain connections at the check valve and 3-way valve. b. Connect

10 e. Adjust flowmeter for desired flow rate. Consult the following chart for cooldown rates. f. Close 3-way valve. Make sure check valve is wor

11 Operating Users and operators of this oven must comply with operating procedures and training of operating personnel as required by the Occupatio

Thank you for choosing Despatch Industries. We appreciate the opportunity to work with you and to meet your heat processing needs. We believe t

12 Pre-Startup Checklist • Know the system. Read this manual carefully. Make use of its instructions and explanations. Safe, continuous, satisfa

13 c. Turn the nitrogen valve switch to the PURGE position for the time to achieve oxygen level as determined in step 2b. Figure 4. Oxygen Level

14 Figure 5. Nitrogen Leakage Rate vs. Oven Pressure Figure 6. Oxygen Stabilization Level vs. Flow of Nitrogen

15 Automatic Nitrogen and Water Cooling Your oven may be fitted with optional automatic water cooling and/or nitrogen control features. These featur

16 CONTROL The special features of the Protocol PlusTM control include: PID tuning Ramp/Soak programming of up to 64 segments Segment looping

17 Protocol Plus Faceplate and Wiring Diagram

18 Operating Modes The Protocol Plus control has five modes of operation available: Stopped Mode: All control and relay outputs are off. Stopped M

19 High Limit The control has an integrated high limit function which will disable the heater output when tripped. If the high limit does trip, the

20 Displays The Protocol Plus control has two displays. A dedicated LED upper display shows the oven temperature. A two-line LCD lower display provi

21 Outputs The Protocol Plus control has seven different outputs available. Heating output: The control output is a DC voltage open-collector out

22 Relay (Continued) Use the Relay Card Optional Ay p/n 144562 to add relays to the standard controller. Each relay card contains two relays (maximum

23 INSTRUCTIONS Start-Up These instructions are provided as a quick reference for operating the Protocol Plus control. If the Profile Mode is to be

24 Operation Manual Mode Press the Select key until Manual is displayed (note you can press the Run key at any time to activate Manual Mode). 1.

25 Timer Mode 1. Press the Select key until Timer is displayed (note you can press the Run key at any time to activate Timer Mode). 2. Press the

26 Profile Mode 1. Press the Select key until Profile is displayed. “None” may be displayed if a profile has not been selected or no profiles ente

27 Note that once you activate Auto Start, you can continue to use all operating modes as normal. If an operating mode is running at the time of a p

28 Instructions for Setup Mode Pages Program Page Programming of the profiles is provided on the Program Page. Eight profiles are available with up

29 Menu Item Display Description Ramp Time Seg 1 Pro-1 Seg-1 Ramp Time Ramp time for segment 1 of profile Event 1 Set Value* Pro-1 Seg-1 Ramp Event

30 Profile # There are eight profiles available. Segment# Recipe segments 1 through 8 may be programmed, each with its own set of events, ramp and

31 Sample Profile Programming Table Profile Number____1______ Profile Name__________ Seg-ment Ramp Soak Time Events Temp-erature Time Events 1

32 Auto Start Page The Auto Start Page can be configured to automatically start Manual, Timer or Profile Mode at a specified time and day. Note that

33 Menu Item Display Description Range Enable Autostart Auto Start Enable Enable (yes) or disable (no) the Autostart function No, Yes Sunday mode Au

34 PID Page The PID Page contains parameters which control the response to the setpoint and process variable input. To access the PID Page, enter t

35 Control Page The Control Page contains various parameters which control miscellaneous functions. To access the Control Page, enter the Setup Mod

36 Communication Page (optional) The Communication Page contains parameters for the communications feature. To access the Communications Page, enter

37 Relay Outputs Page (optional) The Relay Outputs Page configures the four alarm/event outputs. Each output has a dedicated indicator light and can

38 Test Page The Test Page contains parameters which allow manual control of the heat control and optional relay outputs and should be used only for

39 Zone Calibration Page The Zone Calibration Page allows adjustment of the displayed temperature versus the actual temperature measured by the cont

40 As an example, the control is displaying 400°F with the setpoint being 400°F, but the center of the oven chamber is actually 395°F. This can occu

41 Sensor Calibration Page The Sensor Calibration Page has parameters which can change the internal calibration of the temperature sensor input sign

i PREFACE This manual is your guide to the Despatch oven. It is organized to give you the information you need quickly and easily. The INTRODUCTIO

42 19. Connect a calibration instrument with a type J thermocouple output to the control sensor input. 20. Connect a voltage measurement device to

43 Enable Page The Enable Page controls access to the other Setup Pages. The setpoint minimum and maximum values, and the security passwords are als

44 Digital Inputs (optional) The Protocol Plus control can be run by external inputs wired to the control from an external source such as a PLC or c

45 Error Messages and Alarms The Alarm Status Hi-limit LED is flashing. This indicates a problem with the thermocouple, or the Hi-limit setpoint ha

46 Quick Reference and Default Values Program Page Menu Item Display Default Range Setting Ramp Time Seg 1 Pro-1 Seg-1 Ramp Time 00:00 00m00s to 99h

47 Programming Table Profile Number__________ Profile Name__________ Seg-ment Ramp Soak Time Events Temp-erature Time Events 1 2 3 4 1 2 3 4 1

48 Autostart Menu Item Display Default Range Setting Enable Autostart Auto Start Enable No No, Yes Sunday mode Auto Start Sun Mode Off Off, Manual,

49 Control Menu Item Display Default Range Setting Cycle Time Control Cycle Time 1 1 to 60 seconds High limit setpoint Control Hi-Lim SP Max HiLimSP

50 Real Time Clock Menu Item Display Default Range Setting Day of the week Clock Day Mon Sun, Mon, Tue, Wed, Thu, Fri, Sat Time of day Clock HH:MM 0

51 Test Menu Item Display Default Range Setting Heater output Test HeatOut Off On High limit relay Test HiLimOut Off On Relay 1 output Test Rly1 Ou

ii Revision B: Corrected Sensor Calibration Page instruction, pages 38-39 Revision C: Modified per Rev C Protocol Plus software Revision D: Upda

52 Enable Page Menu Item Display Default Range Setting Profiles Enable Profile 1-8 Yes Yes or No Autostart Enable Auto Start No Yes or No ** PID En

53 Technical Specifications UL, cUL listed: UL file E136675 CE compliance to: EMC Directive 89-366/EEC European Standard EN55011/1991 European

54 MAINTENANCE Do not attempt any service on this oven before opening the main power disconnect switch. Checklist • Keep equipment clean. Gra

55 Tests Tests should be performed carefully and regularly. The safety of personnel as well as the condition of equipment may depend upon the prope

56 Replacement Parts To order or return parts, contact the Service Products Division at Despatch. The Service Products features our Response Cent

57 Protocol Plus™ Instrument (Tools needed: 1/4" socket driver with #1 bit, #2 Phillips screwdriver) 1. Disconnect the power. 2. Remove the

58 Fan Motor (Tools needed: Screwdriver, 5/32 inch Allen wrench, one quarter (¼) inch socket set) 1. Remove the chamber floor plate. a. Remove

59 c. Reattach the motor lead wires to the terminal strip. 11. Replace the oven bottom (LND1-42) or control panel front (LND2-11 or 2-24). 12. T

60 TROUBLESHOOTING Equipment which operates for long periods of time may develop problems. Below are possible problems and suggested solutions. If

61 Difficulty Probable Cause Suggested Remedy Erratic temp. or inaccurate temp. Protocol™ malfunction Improper tuning parameters Protocol™ mi

iii TABLE OF CONTENTS INTRODUCTION ...

62 APPENDIX Temperature Scale Conversion (C/F) The Protocol Plus controller can be operated in either C or F. The default setting for the controll

63 Optional MRC5000 Recorder Setup The temperature is retransmitted to the Recorder from the Controller. Set up the Recorder as follows: 1. Make

iv Test Page ....... 38 Zone Calibration Page ...

1 INTRODUCTION This section provides an overview of the Despatch LND Series forced air oven. The LND Series Ovens have the most effective heat dist