Heatcraft Refrigeration Products Masterlog 4 v2 User Handbook Manual

Masterlog4

User Handbook

Masterlog 4 “Version 2”

(from the 11st march 2008)

Code +050004036 Rel. 1.0 – 11/03/2008

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OPERATING INSTRUCTIONS

MASTERLOG 4 “Version 2”

The default parameter settings for the MASTERLOG 4 (bn1) are selected for operation with chilling evaporators

equipped with an air defrost system. For a different operating mode one of the following programs may be
selected:

‘bn1’= chilling with air defrost
‘bn2’= chilling with electrical defrost
‘bn3’= refrigeration with electrical defrost
‘bn4’= ambient chilling with air defrost
‘bn5’=‘bn2’ with 2 evaporators
‘bn6’=‘bn3’ with 2 evaporators

”DO NOT USE ‘bn0’”

Proceed as follows to select one of these programs:

1. Switch off the Masterlog4.

2. Switch the Masterlog4 back on again while simultaneously

pressing the “prg” button until the value ‘bn0’

appears.

3. Select the program required using the “up” and “down” keys

4. Press “set” to confirm the selection.

”Set” Key ”prg” Key “Up/Down” Keys

ATTENTION:

¾ The defrost parameters [‘dI’: interval between 2 defrosts, ‘dT’: temperature at end of defrost (electrical) and ‘dP’:

maximum defrost duration] are factory-set values. Depending on use of the cold storage room, these parameters
must be modified to ensure correct defrosting of the evaporator.

¾ To carry out a manual defrost cycle, press the “defrost” key

for more than 5 sec.

¾ The MASTERLOG 4 relays are “potential-free” contacts. To supply these contacts, it is essential to connect

terminals 1, 4, 7 and 10 as well as aux. terminals 13 and 16 if necessary (refer to the electrical wiring diagram

enclosed with the products).
¾ The MASTERLOG 4 possesses three configurable inputs (terminals 22/23, 24/25 et 26/27). Input n°1

(terminals 22 and 23) may be set as an external alarm coming from the unit (parameter A4=1, except
application 2 evaporators). Some units are equipped with a standard ‘fault contact’ (refer to wiring diagram).

We recommend you connect this alarm contact to the MASTERLOG 4.

¾ If the keypad is locked, modify the parameter H2 (H2=1).

IMPORTANT: Standard and modified parameters are saved in case of an electrical power failure. When

downloading a program, these values are reset in compliance with the basic parameter setting chart.

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1 - Wiring

Sensors:

18 - 19 Ambient pro be (PROBE 1)

20 - 21 End of defrost probe (PROBE 2)
Digital inputs:

22 - 23 Digital input 1 (DI 1) - Parameters A4
24 - 25 Digital input 2 (DI 2) - Parameters A5
26 - 27 Digital input 3 (DI 3) - Parameters A9

Auxiliary:

13 - 14 AUX 1 – Parameters H1

16 - 17 AUX 2 – Parameters H5
Wiring RS485:

28 GND
29 TX/RX+
30 TX/RX-

Relay characteristics:

Refer to chapter 8. Technical characteristics
R1 =30A
R2=16A
R3=8A
R4=8A
R5=16A

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2 - Display

Symbols Colour

Meaning with the symbol

illuminated

Meaning with the symbol

blinking

Amber

Compressor operational

Compressor in standby and ready

to start

Amber

Condenser fan operational

Condenser fan in standby and

ready to start

Amber

Defrost in progress

Condenser fan in standby and

ready to start

AUX

Amber Auxiliary output set as AUX output

Heating element blocking function

enabled at start up

(Option)

Yellow

At least 1 defrost is programmed in

real time

Red External alarm delayed

Alarm present or alarm on digital

input immediate or delayed

Red

Malfunction (e.g. probe

disconnected)

Amber Auxiliary output set as heater

Heating element blocking function

enabled at start up

Amber Activation of a continuous cycle

Continuous cycle cannot be

enabled

(Option)

Red HACCP function enabled New HACCP alarm memorised

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3 - Parameters:

3-1 . Access to parameters:

Modify the set point only

Press and hold SET for 1 second

Use the up and down keys to modify the set

point

Press SET to confirm the

value

Access to all parameters

Press and hold PRG and
SET at the same time for

5 seconds

"00" is displayed

Use the up and down keys to select

“22”

Press SET

Save parameters Do not save parameters Cancel an alarm Manual defrost

Press and hold PRG for 5

seconds

Do not press any other
keys for 60 seconds until
the display returns to the

temperature value

Press PRG

Press and hold DEF

for 5 seconds

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3-2 . Rotation of the parameters list menu

‘Set’= to access or quit a parameter
‘Set’= to access a block
‘Prg’= to quit a block

5s

Probe

Control

Compressor

Defrost

Alarm

Fan

Configuration

HACCP
(OPTION)

(OPTION)

Time range

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4- List of parameters:

The parameters may vary depending on the model of MD33

/: Probe parameters

Display

Parameter and description

Measurement

unit

Min Max

Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn

6

/2

Probe measurement delay

1=immediate response
15=delayed response

- 1 15 4 4 4 4 4 4

/3

Probe display speed

0=slow
15=fast

- 0 15 0 0 0 0 0 0

/4

Virtual probe (between probe 1 and probe 2)

0=Setting of probe 1
50=average between probe 1 and probe 2
100=Setting of probe 2

- 0 100 0 0 0 0 0 0

/5

Selection °C or °F

0=°C
1=°F

Select 0 1 0 0 0 0 0 0

/6

Display decimal point

0=Yes
1=No

Select 0 1 0 0 0 0 0 0

/tI

Selection of probe to be displayed on controller

1=virtual probe
2=probe 1
3=probe 2
4=probe 3
5=probe 4
6=probe 5
7=set point

- 1 7 2 2 2 2 2 2

tE

Selection of probe to be displayed on a remote
display

0=no remote display present
1=virtual probe
2=probe 1
3=probe 2
4=probe 3
5=probe 4
6=probe 5

- 0 6 0 0 0 0 0 0

/P

Selection of probe type

0=standard NTC (black probe)
1=high-temperature NTC (beige probe)
2=PTC

- 0 2 0 0 0 0 0 0

/A2

Configuration of probe 2

0=probe 2 absent or not used
1=product probe (used for display)
2=defrost probe
3=condensation probe
4=anti-frost probe

- 0 4 0 2 2 0 2 2

/A3

Configuration of probe 3 / digital input 1

Same as probe 2

- 0 4 0 0 0 0 2 2

/A4

Configuration of probe 4 / digital input 2

Same as probe 2

- 0 4 0 0 0 0 0 0

/A5

Configuration of probe 5 / digital input 3

Same as probe 2

- 0 4 0 0 0 0 0 0

/c1

Calibration of probe 1 °C/°F -20 20 0 0 0 0 0 0

/c2

Calibration of probe 2 °C/°F -20 20 0 0 0 0 0 0

/c3

Calibration of probe 3 °C/°F -20 20 0 0 0 0 0 0

/c4

Calibration of probe 4 °C/°F -20 20 0 0 0 0 0 0

/c5

Calibration of probe 5 °C/°F -20 20 0 0 0 0 0 0