Watlow Electric MINICHEF 2000 User Manual

MINICHEFTM2000

Registered Company

Winona, Minnesota USA

ISO 9001

TOTAL

CUSTOMER

SATISFACTION

Applications 7, 8 & 9

Convection Oven Applications Guide

Programming & Operating Steps

Watlow Controls

1241 Bundy Blvd. P.O. Box 5580 Winona, Minnesota U.S.A. 55987-5580 (507) 454-5300, Fax (507) 452-4507

WMC2-XAGN-0002-Rev A May 1997

Made in the U.S.A.

$5.00

Application 7

Automatic Convection Oven. . . . . . . . . . . . . . . . 1

Application 8

Automatic Convection Oven . . . . . . . . . . . . . . . 11

Application 9

Manual Convection Oven . . . . . . . . . . . . . . . . 21

Ordering Information . . . . . . . . . . . . . . . . . . . 33

Application 7

Automatic Convection Oven

One Heat Channel, Six Menus

Introduction to Application 7 . . . . . . . . . . . . . . . 1

Configuration Mode Quick Reference . . . . . . . . . 3

Program Mode Quick Reference . . . . . . . . . . . . 4

Step 7 Design a Faceplate Overlay. . . . . . . . . . . 5

Step 8 Operate the Controller . . . . . . . . . . . . . . 6

Application 7 allows you to program as many as six menu keys to control one temperature channel, a fan and cooking time for an automatic convection oven.

Overview of Key Steps

1. Install the MINICHEF 2000.

2. Wire the controller.

3. Configure the controller.

4. Program the menus.

5. Set the controller security.

6. Set the Real-time Clock. For instructions on Steps 1, 2, 3, 4, 5 and 6, see the Hardware & Software Setup Guide.

7. Design, manufacture and apply faceplate overlay for end-users. (For a suggested design to suit this application, see this section. For overlay dimensions and guidelines, see the Hardware & Software Setup Guide.)

8. Operate the controller. (See this application guide.)

Key Functions in Configuration Mode

→Output 1 Heat

→Output 2 not used

→Event Output 1 Fan Low →Event Output 2 Fan High →Output 5 Audible Alarm

Heat

Menu 1

Menu 4

Menu 3

Menu 6

Menu 2

Menu 5

Your Company Logo

Input 1 Oven Temperature→

Input 2 not used →

Event Input 1 Door Open →

Event Input 2 not used →

Heat

123

456

Your Company Logo

Menu Key Indicator Lights

Slow flash...Preheating Rapid flash...Ready Lit...Cooking Rapid flash...Done Slow flash...Idle and

regulating temp to previous set point

Not Lit...No menu selected

Heat Indicator Light Lit when heat output is on.

Menu Keys Activate and cancel menus, activate cook cycle when preheating,and acknowledge alarms.

Enter

EscapeHome

Edit

MINICHEF 2000

Display five-digit, sevensegment numeric LED display.

Indicator lights

(1 for each key, 2 for heat channels).

Edit key (A) Access the next level of parameters or values.

Enter key (B) Enter the value and return to previous level.

Home key (D) Move to Operation Mode with a two-second key press.

Up key (C) Move up the lists.

Escape key (E) Return to original value when editing a parameter value.

Down key (F) Move down the lists.

Key Functions in Operation Mode

Summary of Input/Output Functions

Note: For details, see wiring instructions in the

2 ■ Watlow MINIC HEF 2000 Application 7

Hardware & Software Setup Guide.

Configuration Mode Quick Reference

These are the functions, parameters and values included in the Configuration Mode for this application. You must select Application 7 to access them. For directions, see the Hardware & Software Setup Guide. The Appendix of that guide includes an explanation of all parameters and values.

Function Parameter Value Your Settings

{Etype} Equipment-Type [appl`] Application Number 1 - 28 7

[a_Loc] Application Number yes, no

Security Lock

[Sound] Audible Alarm 0 - 5 [FAn``] Fan Speed 1 spd, 2 spd [delay] Fan Delay Time 0 - 120

[SEtUP] Setup [`Ç_Ï`] Temperature Display Format °C or °F

[time] Time Display Format MMM:SS, HH:MM, H:MM:SS

(H=Hours, M=Minutes, S=Seconds)

[Chirp] Key Chirp On, Off [loc``] Menu Security Lock Yes, No [tc```] Thermocouple Type J, K (shown as [````H]), E [rtd``] RTD Curve DIN, JIS [tconp] WatCurveTMTemperature On, Off

Compensation

[Ofst1] Temperature Offset, Channel 1 -99° to 99°F (-55° to 55°C) [tr`lo] Temperature Range Low 0ºF (-18ºC) for RTD inputs

32ºF (0ºC) for tc inputs to [tr`Hi] [tr`Hi] Temperature Range High [tr`lo] to 1200°F (649°C) [ready] Preheat Ready Feature Yes, No [rband] Ready Band 1 to 1200°F (649°C) [Cloc`] Real Time Clock Display Yes, No [plOSS] Power Loss Menu Resume Yes, No [al``1] Alarms for channel 1 None, Dev, Proc, Both [aL`P1] Absolute Process Alarm 1 100 to 1200°F (38 to 649°C) [aLdL1] Low Deviation Alarm 1 -999 to 0°F (-555 to 0°C) [aLdH1] High Deviation Alarm 1 0 to 999°F (0 to 555°C)

[tHErl] Thermal [tyPE`] Temperature Control Type PID, On-Off

[HYSt1] Hysteresis 1 1 to 99°F (1 to 55°C) [Pid`U] PID Units SI, US [tune1] Auto-tuning 1 on, OFF [ProP1] Proportional Band 1 1 to 999°F (1 to 555°C) [rSEt1] Reset (integral) Gain 1 0.00 to 9.99 repeats/minute [int`1] Integral Gain 1 0.00 to 99.99 minutes/repeat [rAtE1] Rate (derivative) Gain 1 0.00 to 9.99 minutes [dEr`1] Derivative Gain 1 0.00 to 9.99 minutes [CYcL1] PID Cycle Time 1 1 to 60 seconds

[`diag] WatHelp Used for equipment troubleshooting and testing. Not used when programming. See the Hardware

Diagnostics & Software Setup Guide.

Application 7 Watlow MINICHEF 2000 ■ 3

Program Mode Quick Reference

These are the functions, parameters and values included in the Program Mode for this application. You must select Application 7 to access them. For menu programming directions, see the Hardware & Software Setup Guide. The Appendix of that guide includes a

Function Parameter Value Your Settings

[M`__] [Stpt1] Set point 1 Temperature range low Menu Numbers 1 - 6 Temperature of set point 1. to range high.

detailed explanation of all parameters and values.

[Tine1] Time 1 Setting Time 1, Time 2, Time 3 Run time of set point 1. and Time 4 all to zero

invalidates selected menu. Format varies based on configuration.

[fan`1] Fan 1 Speed Single Speed: On, Off Speed of fan during time 1. Two Speed: Off, Low, Hi

[Stpt2] Set point 2 Temperature range low Temperature of set point 2. to range high.

[Tine2] Time 2 Setting Time 1, Time 2, Time 3 Run time of set point 2. and Time 4 all to zero

invalidates selected menu. Format varies based

on configuration.

[fan`2] Fan 2 Single Speed: On, Off Speed of fan during time 2. Two Speed: Off, Low, Hi.

[Stpt3] Set point 3 Temperature range low Temperature of set point 3. to range high.

[Tine3] Time 3 Setting Time 1, Time 2, Time 3 Run time of set point 3. and Time 4 all to zero

invalidates selected menu. Format varies based

on configuration.

[fan`3] Fan 3 Single Speed: On, Off Speed of fan during time 3. Two Speed: Off, Low, Hi

[Stpt4] Set point 4 Temperature range low Temperature of set point 4. to range high.

[Tine4] Time 4 Setting Time 1, Time 2, Time 3 Run time of set point 4. and Time 4 all to zero

invalidates selected menu. Format varies based

on configuration.

[fan`4] Fan 4 Single Speed: On, Off Speed of fan during time 4. Two Speed: Off, Low, Hi

Auto-tuning Note:

Before auto-tuning Application 7, the Set Point 1 of Menu 1 must first be set to a value that is typical of your application. (See Hardware & Software Setup Guide for information on programming menus.) Then set [tHerl] / [tunE1] to [```on]. After you accept [```on], by pressing “Enter,” the controller will display [`tunE] while auto-tuning is taking place.

The controller will cancel the auto-tuning process if it cannot be completed in 80 minutes. You can cancel the auto-tuning process at any time by pressing either key C or key D and accepting [``Off], by pressing “Enter,” when it appears.

4 ■ Watlow MINIC HEF 2000 Application 7

Step 7 Design a Faceplate Overlay

Enter

EscapeHome

Edit

MINICHEF 2000

Heat

123

456

Your Company Logo

To complete the installation, you must apply a graphic membrane to the front panel of the controller. The following artwork will help you design and create a membrane for this application. For more dimensions and guidelines, see the Hardware & Software Setup Guide.

Suggested End-user Overlay:

This Prototyping and Training Membrane Overlay will help you with the configuration and programming steps. To order it, see the Ordering Information at the back of this guide.

Application 7 Watlow MINICHEF 2000 ■ 5

Step 8 Operate the Controller

DECF

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit

SLOW

FLASH

AT OPERATING TEMPERATURE

(PREHEAT CONDITION MET)

RAPID FLASH

DECF

MINICHEF 2000

[100f`]

Edit Accept

Back-UpExit

DECF

MINICHEF 2000

[ready]

Edit Accept

Back-UpExit

G H GH

A A

[pre-`] [`Heat]

Summary of Key Functions in Operation Mode

Key Function

A Menu 1 B Menu 2 C Menu 3 D Menu 4 E Menu 5 F Menu 6

Start-up

Apply power to the oven. [`idle] will appear on the display. If the Real Time Clock Display option is installed and [setUp] / [time] is pro-

grammed, the time of day will appear on the display.

Preheat

If the [Ready] parameter under the [SEtUP] function in the Configuration Mode is set to yes, the controller will detect temperatures and preheat to operating temperature (above the relative set point minus the ready band) as required.

• Press the key for the menu you want to run. Each key selects a different menu. You can select from up to six menus that control temperature and cooking time. Only one menu may be run at a time.

Note: The controller will not respond if you select an invalid menu (one for which the total of Time 1, Time 2, Time 3,

and Time 4 is set to 0).

The menu you have chosen becomes the current menu for controller operation. Until the menu is completed or canceled, the indicator light above the menu key will light up (flashing or steady) to indicate the active menu.

• If the oven is not at operating temperature, it will preheat. Meanwhile: The word [pre-`] [`Heat] will appear on the display for a few moments. The

menu key indicator light will flash slowly. The temperature of Channel 1 will be displayed until the operating temperature is reached.

6 ■ Watlow MINIC HEF 2000 Application 7

The heat output indicator light - G, just below the display- will light up whenever

DECF

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit

SLOW FLASH

AT OPERATING TEMPERATURE

(PREHEAT CONDITION MET)

RAPID FLASH

DECF

MINICHEF 2000

[100f`]

Edit Accept

Back-UpExit

DECF

MINICHEF 2000

[ready]

Edit Accept

Back-UpExit

G H GH

A A

[pre-`] [`Heat]

the controller is calling for heat. When the oven is at operating temperature (above the relative set point minus the

ready band) [ready] will appear on the display and the menu key indicator light will flash rapidly. You are now ready to cook with the active menu.

• If the oven is at operating temperature, the display goes directly to [ready] without indicating preheat or temperature.

Note: you can skip preheat and go directly to the cooking sequence by pressing the menu key a second time.

Run a Menu (when preheat feature is active)

This procedure describes how to run an active menu when the preheat feature is active

- that is, when the [ready] parameter in the [setUp] function of the Configuration

mode is set to [``yes].

1. With [`idle] or time of day on the display, press the key for the menu you want to run.

If the preheat condition has not been met, the oven will preheat until [ready] appears on the display.

Note: You can skip preheat and go directly to the cooking sequence by pressing the menu key a second time.

If the oven is already at operating temperature [ready] will appear on the display.

2. With [ready] on the display, place the food in the oven. Then press the active menu key (indicated by the rapidly flashing indicator light).

The menu key indicator will light up. Time will count down on the display. The unit will run the following four-step cooking sequence: Countdown time is displayed. It is the total of the programmed Time 1 plus Time 2

plus Time 3 plus Time 4. Set point 1 and Fan 1 will run until Time 1 expires. Set point 2 and Fan 2 will run until Time 2 expires. You will not see the switch-over

from Time 1 to Time 2. Set point 3 and Fan 3 will run until Time 3 expires. You will not see the switch-over

from Time 2 to Time 3. Set point 4 and Fan 4 will run until Time 4 expires. You will not see the switch-over

from Time 3 to Time 4.

3. When the cooking sequence is finished, one of the following will happen, depending on the way the controller was programmed at [Etype] / [sound]:

Application 7 Watlow MINICHEF 2000 ■ 7

With Sound set to 0, the controller automatically switches to idle in which the controller does not maintain temperature and does not run time. [`idle] or time of day will appear on the display. The menu key indicator light will be off.

With Sound set to 1, 2, or 3, [``end] will appear on the display and an audible tone will be emitted. The menu key indicator light will flash rapidly. You can acknowledge the tone by pressing the active menu key or it will time out in 1 to 20 seconds and go into idle. The menu key indicator light will flash slowly.

With Sound set to 4 or 5, end will appear on the display and the menu key indicator light will flash rapidly. You must acknowledge the audible signal by pressing the active menu key. Once acknowledged the audible signal is silenced and the controller goes into idle. The menu key indicator light will flash slowly.

4. Once the controller goes into idle, the menu key indicator light and the heat outputs will switch off. The controller will not regulate to any temperature.

5. To repeat cooking, repeat steps 1 through 2 or 3.

Run a Menu (when preheat feature is not active)

This procedure describes how to run an active menu when the preheat feature is inactive - in other words, when the [ready] parameter in the [setUp] function of the Configuration mode is set to [```no].

1. With idle on the display, place the food in the oven.

2. Press the key for the menu you want to run. The menu key indicator will light up. Time will count down on the display. The unit will run the following four-step cooking sequence: Countdown time is displayed. It is the total of the programmed Time 1 plus Time 2

plus Time 3 plus Time 4. Set point 1 and Fan 1 will run until Time 1 expires. Set point 2 and Fan 2 will run until Time 2 expires. You will not see the switch-over

from Time 1 to Time 2. Set point 3 and Fan 3 will run until Time 3 expires. You will not see the switch-over

from Time 2 to Time 3. Set point 4 and Fan 4 will run until Time 4 expires. You will not see the switch-over

from Time 3 to Time 4.

3. When the cooking sequence is finished, one of the following will happen, depending on the way the controller was programmed at [Etype] / [sound]:

8 ■ Watlow MINIC HEF 2000 Application 7

4. Once the controller goes into idle, the menu key indicator light and the heat outputs will switch off. The controller will not regulate to any temperature.

5. To repeat cooking, repeat steps 1 through 2 or 3.

Pause a Menu

While cooking, you can pause cooking time by pressing the active menu key once. The menu key indicator light will flash rapidly. [PAUSE] will appear on the display. Countdown time will resume when you press the active menu key again.

Cancel a menu

Canceling a menu stops the controller completely. The controller does not maintain set point temperatures or run time. You cancel a menu to run another menu, stop menu operation for any reason, or are preparing to shut off the oven.

• Press the active menu key for 2 seconds. Heat outputs will switch off. Heat output indicator lights will switch off. [`idLE] or time of day will be on the display.

Change Menus or Restart

With the controller in idle press the key for the menu you want to run.

Door Opening

When you open the oven door (when the oven door is open, the switch is closed and Event Input 1 is turned on) the unit will act as described below.

During the cooking sequence: time is paused - [`door] will appear on the display. The heat and fan output signals will shut off.

During the preheat sequence: [`door] will appear on the display. The heat and fan output signals will be shut off.

During idle, the fan output signals will be shut off. When you close the door the unit will operate normally.

Event Outputs

While running a menu when the Configuration Mode [EtYPE] / [FAn``] is set to [````2] :

When Low fan speed is on, Event Output 1 is on. When High fan speed is on, Event Output 2 is on.

While running a menu when the Configuration Mode [EtYPE] / [FAn``] is set to

[````1] :When the fan is on, Event Output 1 is on.

WARNING: Starting or initiating a menu can cause or initiate fan motion. Appropriate reasonable care should be

taken to prevent personal injury or machine damage as a result of operator initiated or unexpected fan motion.

Temperature Alarms

The controller will alert you to temperature alarm conditions if they occur. If an alarm occurs, take action as determined by your supervisor. See the Appendix in the Hardware & Software Setup Guide for a Troubleshooting Chart and a summary of temperature alarms.

Application 7 Watlow MINICHEF 2000 ■ 9

Errors

The controller will alert you to errors if they occur. Errors are critical problems that shut down the unit. If an error occurs, an error message will appear on the display. You should switch off the power and call for service.

See the Appendix in the Hardware & Software Setup Guide for a Troubleshooting Chart and a summary of errors.

10 ■ Watlow MINIC HEF 2000 Application 7

+ 28 hidden pages

Watlow Electric MINICHEF 2000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Convection Oven Applications Guide

Table of Contents

Automatic Convection Oven

Configuration Mode Quick Reference

Program Mode Quick Reference

Step 7 Design a Faceplate Overlay

Step 8 Operate the Controller