Watlow MINICHEF 2000 User guide

MINICHEFTM 2000

Applications 1 - 6

Cook-&-Hold Oven

Applications Guide

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-0001-Rev A

May 1997

$5.00

Made in the U.S.A.

Programming & Operating Steps

Registered Company

Winona, Minnesota USA

ISO 9001

TOTAL

CUSTOMER

SATISFACTION

Table of Contents

Application 1

Automatic Cook-&-Hold Oven with Meat Probe Option . . . 1

Application 2

Automatic Cook-&-Hold Oven with Meat Probe Optiion . . 11

Application 3

Automatic Cook-&-Hold Oven . . . . . . . . . . . . . . . . . . . 23

Application 4

Automatic Cook-&-Hold Oven . . . . . . . . . . . . . . . . . . . 33

Application 5

Manual Cook-&-Hold Oven with Meat Probe Option . . . . 43

Application 6

Manual Cook-&-Hold Oven. . . . . . . . . . . . . . . . . . . . . 55

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 67

Application 1

Automatic Cook-&-Hold

Oven with Meat Probe

Option

One Heat Channel, Six Menus

Introduction to Application 1 . . . . . . . . . . . . . . . 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 1 allows you to program as many as six menu keys to control one tempera-

ture channel, a fan and cooking time for an automatic cook-&-hold oven with or without

a meat probe.

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 guide-

lines, see the Hardware & Software Setup Guide.)

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

2■ Watlow MINICHEF 2000 Application 1

Key Functions in Configuration Mode

Key Functions in Operation Mode

Summary of Input/Output Functions

Note: For details, see wiring instructions in the

Hardware & Software Setup Guide.

Heat

Menu 1

Menu 4

Menu 3

Menu 6

1Menu 2

4Menu 5

Your Company Logo →Output 1 Heat

→Output 2 not used

→Event Output 1 Fan Low

→Event Output 2 Fan High

→Output 5 Audible Alarm

Input 1 Oven Temperature →

Input 2 Probe Temperature→

Event Input 1 Door →

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, seven-

segment 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.

Application 1 Watlow MINICHEF 2000 ■ 3

Configuration Mode Quick Reference

These are the functions, parameters and values included in the Configuration Mode for

this application. You must select Application 1 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 1

[a_Loc] Application Number Yes, No

Security Lock

[Sound] Audible Alarm Sound 0 - 5

[FAn``] Fan Speed 1 spd, 2 spd

[delay] Fan Delay Time 0 - 120 minutes

[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] WatCurveTM Temperature On, Off

Compensation

[Ofst1] Temp. Offset, Channel 1 -99 to 99°F (-55 to 55°C)

[Ofst2] Temp. Offset, Channel 2 -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)

[aLdHi] High Deviation Alarm 1 0 to 999°F (0 to 555°C)

[AL``2] Alarm for Channel 2 None, Dev, Proc, Both

[AL`P2] Absolute Process Alarm 2 100 to 1200°F (38 to 649°C)

[aLdL2] Low Deviation Alarm 2 -999 to 0°F (-555 to 0°C)

[aLdH2] High Deviation Alarm 2 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.

4■ Watlow MINICHEF 2000 Application 1

Program Mode Quick Reference

These are the functions, parameters and values included in the Program Mode for this

application. You must select Application 1 to access them. For menu programming direc-

tions, see the Hardware & Software Setup Guide. The Appendix of that guide includes a

detailed explanation of all parameters and values.

Function Parameter Value Your Settings

[M`__] Menu Numbers 1 - 6 [Stpt1] Set point 1 Temp range low

Temperature of set point 1. to temp range high

[TiNe1] Time 1 Format varies based

Run time of set point 1. on configuration.

[fan`1] Fan 1 Speed Single Speed: On, Off

Speed of fan 1 during time 1. Two Speed: Off, Low, High

[Stpt2] Set point 2 Temp range low

Temperature of set point 2. to temp range high

[TiNe2] Time 2 Format varies based

Run time of set point 2. on configuration.

[fan`2] Fan 2 Single Speed: On, Off

Speed of fan during time 2 Two Speed: Off, Low, High

[Probe] Probe On, Off

Activates probe function.

[ptenp] Probe Temperature Temp range low

Temperature at which probe to temp range high

will switch controller to

hold condition.

[Hstpt] Hold Set point Temp range low

Temperature at which the to temp range high

oven will operate during

hold sequence.

[Htine] Hold Time 0 = infinite. A setting >0

Run time of hold sequence. = hold time.

Format varies based

on configuration.

[H`fan] Hold Fan Single Speed: On, Off

Speed of fan during hold time. Two speed: Off, Low, High

Auto-tuning Note:

Before auto-tuning Application 1, Set Point 1 of Menu 1 must first be set to a value that

is typical of your application. (See the 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 min-

utes. 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.

Application 1 Watlow MINICHEF 2000 ■ 5

Step 7 Design a Faceplate Overlay

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 con-

figuration and programming steps. To order it, see the Ordering Information

at the back of this guide.

Enter

EscapeHome

Edit

MINICHEF 2000

Heat

123

456

Your Company Logo

6■ Watlow MINICHEF 2000 Application 1

Step 8 Operate the Controller

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

Startup

Apply power to the oven.

[`iDle] will appear on the display.

If the Real Time Clock Display option is installed and [SetUp] / [Cloc`] = [``yes],

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 tempera-

ture (set point minus the ready band).

• 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 sum of Time 1 and Time 2 is 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.

(The Heat output indicator light — G, just below the display — will light up whenever

the controller is calling for heat.)

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit

SLOW

FLASH

AT OPERATING TEMPERATURE

(PREHEAT CONDITION MET)

RAPID

FLASH

MINICHEF 2000

[100f`]

Edit Accept

Back-UpExit

MINICHEF 2000

[ready]

Edit Accept

Back-UpExit

G H GH

A A

[pre-`] [`Heat]

Application 1 Watlow MINICHEF 2000 ■ 7

When the oven is at operating temperature (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] with-

out 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 (with preheat feature)

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

(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 and insert the meat probe

(if necessary). Then press the active menu key (indicated by the rapidly flashing

LED).

The menu key indicator light will light up. Time will count down on the display.

The unit will run the following two-step cooking sequence:

Countdown time is displayed. It is the total of the programmed Time 1 plus Time 2.

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.

3. If the probe parameter has been selected [```on], the oven will run the probe

sequence when the cooking sequence is complete.

[Probe] will appear on the display.

The unit will continue to cook until the food reaches the programmed probe temper-

ature.

4. Once the cooking sequence (and the probe sequence, if run) is complete, the unit will

MINICHEF 2000

[ready]

Edit Accept

Back-UpExit

MINICHEF 2000

[`1459]

Edit Accept

Back-UpExit

STEADY

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit

SLOW

FLASH

AT OPERATING TEMPERATURE

(PREHEAT CONDITION MET)

RAPID

FLASH

MINICHEF 2000

[100f`]

Edit Accept

Back-UpExit

MINICHEF 2000

[ready]

Edit Accept

Back-UpExit

G H GH

A A

[pre-`] [`Heat]

8■ Watlow MINICHEF 2000 Application 1

switch to the Hold sequence.The display will alternate slowly between Hold and

count up time.

If the Hold time [HtinE] parameter has been set to 0, the unit will count up time

indefinitely. The hold sequence will end and the controller will go into idle when you

cancel the current menu by pressing the active menu key.

If [HtinE] is greater than 0, the unit will run the hold sequence until the hold time

expires. It will then switch to the sequence described in 5.

5. When the cooking cycle is finished, one of the following will happen, depending on

the way the controller was programmed at [Etype] /[sound].:

With Sound set to 0: The controller automatically switches to idle, in which the con-

troller does not maintain temperature and does not run time. [`idle] or current

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 acknowl-

edge and silence the tone by pressing the active menu key or it will automatically

time out within 20 seconds and go into idle.

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 tone by pressing

the active menu key. Once acknowledged the audible tone is silenced and the con-

troller goes into idle.

6. 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.

7. To repeat cooking, repeat steps 1 through 4 or 5.

Run a Menu (without preheat feature)

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

tive — in other words, when the [ready] parameter in the [SetUp] function of the

Configuration Mode is set to [```no].

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit



G H

SLOW

FLASH

MINICHEF 2000

[``EnD]

Edit Accept

Back-UpExit

MINICHEF 2000

[`idle]

Edit Accept

Back-UpExit

G H

AAB

SLOW

FLASH

MINICHEF 2000

[`Ho1d]] [``!¢4] [`Ho1d] [``!¢9]

Edit Accept

Back-UpExit

G...

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