Danfoss Microcool / AKC 114B Menu description LL01-303 (Issue C) vers. 1.2x Installation guide

Microcool

Menu Description

LL01-303 (Issue C) 12.08.98

RC.8A.X1.02 09-10-2001

Controller for controlling Electronic Expansion Valve type AKV on

evaporators in Display cases and Cold rooms.

Code Number : P84-053 With S1 temperature sensor.

Software version 1.20

RC.8A.X1.02 10-2001

RC.8A.X1.02

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Danfoss endeavours to ensure that this publication is correct and up to date. However, development of

systems and services is continuous and published information may not be up to date.

Danfoss accepts no liability for any error or omission.

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Reference number: LL01-303 (Issue C) 12.08.98 = RC.8A.X1.02 10-2001

Date of Issue: 08/98

At the end of 2001 the controller obtained the type designation: AKC 114B.

After this date this User Guide comprises both Microcool and AKC 114B.

After this date Danfoss undertakes all service on the controller.

OX12 9FA.

This document must not be reproduced or copied in whole or part without the prior written consent of

Danfoss.

Comments on this publication are welcome and should be sent to:

Danfoss A/S

RC-ET

Nordborgvej 81

DK-6430 Nordborg

Contents

LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001 Page iii

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Page

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1.1 System Overview 1

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2.1 Introduction 2

2.2 Access to all Functions 2

2.3 Select a Controller 2

2.4 Setting up a Controller 3

2.5 Access to a Controller 3

2.6 Help Text 4

2.7 How to Localise an Error 4

2.8 Functions of a Controller 4

2.9 F1 Key 5

2.10 F2 Key 6

2.11 F3 Key 7

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Error Log 22

Communications Messages from AKA 21 24

Software History

Page iv LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001

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Original software fitted to the first batch of controllers supplied

between March 1996 and July 1996 (approx. 800 off).

Problem when used in a Coldroom panel that uses the Rail Heat

output as a Gas Alarm output. Every time the unit goes into defrost

it initiated the Gas Alarm.

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Fitted to Coldroom panels to overcome the problem with the Gas

Alarm. Supplied in 2

nd

batch of controllers supplied August to

October 1996 (approx. 500 off).

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This version of software is to cater for the Marks and Spencer

requirement of 3 temperature bands and 2 slugged probes.

The Keyswitch fitted to the display is used to select Ambient (No

Coolin

g

), Yellow Band (Day Settin

g

s) and Red Band (Ni

g

ht Settin

g

s).

A second set of Alarm Set Points have been added that are also

selected by the Keyswitch.

To enable this mode the Display setting should be 5 and the Day /

Night option set to 3. In addition, the Day / Night Control

Temperatures have to be set along with the alarm settings.

This version is fitted to all controllers fitted on M & S sites from

September 1996 and to all controllers from October 1996 onwards.

Introduction

LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001 Page 1

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A refrigeration system fitted with Microcool controls will usually consist of several

controllers where each controller will regulate its own refrigeration Display case or

Coldroom.

The system has been designed in such a way that contact can be established with

each and every controller via a data communication system. One specific controller

is selected via the handset type AKA21. Once selected it is possible to display

readings or make changes to the control parameters providing the passcode is

entered.

Operation

Page 2 LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001

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The individual controllers can be accessed in two ways:

1. With the AKA 21 hand setting unit. This

Document describes this mode of operation.

2. Via the Woodley MK 5. See separate manual

for this mode of operation

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The access to the functions may be protected with a passcode ( code 2). If the

passcode is required key it in as follows:

• Push the “key” key

• Enter the passcode with the “+”, “-“ and “Digit” keys

• Push “ Enter “ key

• Push “ left “ key

Move to the required function by pressing the four arrow keys as required

If you wish to exit from the passcode function press “clear” then “left” keys.

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All controllers that are connected to the same network can be accessed with the

AKA21 Hand setting unit. There can be up to 125 controllers on any one network.

They are shown in groups of 16 on the display.

1 < 1 > 16

AEAAAAAAAAEEgg A

A system is shown here which consists of more than 16 controllers. The meaning of

the letters, is as follows:

A: AKC controller

E: Controller with active ERROR (on addresses 2, 11 & 12)

g: Gateway (to addresses13 and 14)

G: Gateway with connected printer

: A blank field indicates there is no unit with this address

Operation

LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001 Page 3

1 < 4 > 16

AEAAAAAAAAEEgg A

Select the unit that is to be operated by using the “+/On” or “-/Off” key, and push

“Enter”. In this example you select the controller with address 4.

17 < 17 > 32

AAA

If the system comprises more than 16 units or units with an address code higher

than 16, you may change to the next group by pushing “→”

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When a controller has been selected, you can make changes to the settings .

Changing the settings can be performed, as follows:

5 ON

-50 to +50 5 OFF/ON ON

Shown in the upper right corner of the display is the setting with which the controller

is operating. Below that value a new setting may be made. Use the three keys

“+/ON”, “-/OFF” and “Digit” for setting the new value. This new value will not govern

the regulation until you push the key “Enter”. The new value will then move to the

top line.

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The functions in the controller can be protected by means of an access code.

Depending on the settings to be made, you may gain access in one of the following

ways:

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1. Push F1 Display of alarms

2. Push F2 Reading of selected temperatures, change of

temperature in the refrigeration appliance, start

of defrost etc.

3. Code 1 and then F1 Acknowledgement of alarms

Code 1 and then F3 Setting of selected parameters

4. Code 2 operation of all settings of the entire menu

system(with system software type AKM or Mk 5

there is access to additional functions in the

controller).

Operation

Page 4 LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001

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Help text is attached to the individual displays. When a function is displayed in the

hand setting unit display, the help text can be obtained by pushing the “Help” key.

The help text is intended as a aid to users who no longer need to use these

operating instructions.

In the menu list attached, functions with help text available are identified with the

word “Help” next to the function.

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When an error appears in a system, it can be seen on the control panel’s display

which will show an “E”. If the hand setting unit shows text from a selected controller,

the LED on the hand set next to “Alarm” will flash.

1 < 2 > 16 MCOOL Adr: 2

AEAAAAAAAAAAgg A E Mon-11:27

High air temp

When an error has occurred, first select the controller on which the error is

registered. When the controller has been found, push “F1”, and the error message

will appear.

At the end of this document there is a list of the error messages and a description of

how to acknowledge an alarm.

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When one controller has been selected from the total system, the following display

will appear (the display is the first one shown when you have selected an address

from the total system):

e.g.

MCOOL Adr: 2

E Mon-11:27

From this position you can freely choose between several forms of operating levels:

1. Display of alarms - push “F1”

2. Display of the units measured values - push “F2”

3. Display and setting of several selected functions - push “F3”

The function may be protected with a code (code 1)

Operation

LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001 Page 5

4. Display and setting of all allowed functions in the controller. The function

may be protected with a code (code 2)

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When you push the “F1” key the alarm message from the controller in question will

appear. Only active alarms are shown.

With a push of the “ Down “ key you can see whether there are any more alarm

messages, and if so , the detail.

When an alarm has been localised and corrected, the alarm is acknowledged

(removed from the system). In large systems where a gateway is connected to the

bus the alarms will automatically be acknowledged and logged.

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Operation

Page 6 LL01-303 (Issue C) 12.08.98 / RC8AX102 10-2001

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When you press the “ F2” key a number of functions will appear where it is possible

to read the systems measured values.

You can move between individual measured values by pressing the “up” or “ down”

keys.

To °C Calculated evaporator temperature

6:01:01 when AKS 32R is “ON”

Po bar Evaporator pressure

6:01:02 when AKS 32R is “ON”

S1 °C Refrigerant temperature at evaporator

6:01:03 inlet.

S2 °C Refrigerant temperature at evaporator

6:01:04 outlet.

S2 - S1 °K Evaporator superheat.

3:01:02

S3 °C Air temperature on to the evaporator.

6:01:05

S4 °C Air temperature out of the evaporator 6:01:06

S5 °C Temperature at S5 sensor

6:01:07 location can vary.

S6 °C Temperature at S6 sensor

6:01:08 location can vary.

Ther.Air Actual air temperature used for control.