ECKELMANN VS 300 User manual

Doku-Version 2.05 - Firmware 2.10 - 15. September 2017
Operating instruction
VS 300 Compact Pack Controller
Controller for Compressor and Condenser Control - Version V2.10

Doku-Version 2.05 - Firmware 2.10 - 15. September 2017
Eckelmann Gruppe
Eckelmann AG
Business Unit Refrigeration and Building Automation
Berliner Straße 161
65205 Wiesbaden, Germany
Telephone [phone]
Fax [phone]
[email protected]
www.eckelmann.de
Board of Directors: Dipl.-Ing. Peter Frankenbach (Sprecher des Vorstands),
Dipl.-Wirtsch.-Ing. Philipp Eckelmann, Dr.-Ing. Marco Münchhof, Dr.-Ing. Frank Uhlemann
Chairman of the supervisory board: Hubertus G. Krossa
Vice-chairman of the supervisory board: Dr.-Ing. Gerd Eckelmann
Registration court / registration number
District court Wiesbaden, Germany
HRB 12636
Before commissioning and use, please check that this is the latest version of the document.
With the publication of a new version of the documentation, all previous versions lose their validity.
Errors and technical modifications are expressly reserved.
The current operating manual and information such as data sheets, more detailed documentation and FAQs are
available for you on-line in E°EDP (Eckelmann ° Electronic Documentation Platform) at
www.eckelmann.de/elds
You reach all relevant documents for this component directly using the QR code:
Information on safety and connection instructions
are described in detail in chapter 1 ”Industrial safety notes”.
All rights to any use whatever, utilisation, further development, forwarding and creation of copies remain with
the Eckelmann AG company.
In particular, neither the contract partners of Eckelmann AG nor other users have the right to distribute or mar
ket the IT programs/program parts or modified or edited versions without express written permission. To some
extent, names of products/goods or designations are protected for the respective manufacturer (registered
trademarks etc.); in any case, no guarantee is assumed for their free availability/permission to use them. The
information provided in the description is given independently of any existing patent protection or other third-
party rights.

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Conventions 1.....................................................................
Explanation of 'General Instructions' 1.................................................
Explanation of 'Safety Instructions and Hazard Warnings' 1..............................
Warning Signs and Symbols Employed 2..............................................
1 Safety instructions 3.....................................................
1.1 Disclaimer in the event of non-compliance 4.................................
1.2 Personnel requirements, requirements on staff 4.............................
1.3 Intended use 5...........................................................
1.4 BGV A3 - Five safety rules 5...............................................
1.5 Electrostatic sensitive devices (ESDs) 6.....................................
1.5.1 ESD - Rules for handling and working 6.....................................
1.6 Abbreviations used 6......................................................
2 System Design of VS 300 7...............................................
2.1 New features compared to earlier versions 9.................................
3 Application of VS 300 11..................................................
3.1 System expansion options 12...............................................
4 Function of VS 300 15.....................................................
4.1 System Configuration 15...................................................
4.1.1 System design – Allocation of relay/control stages 15..........................
4.1.2 Dispatching of the internal alarm outputs 16...................................
4.1.3 Example of VS 300 system configuration 17..................................
4.2 Configuration / monitoring of digital inputs 19..................................
4.3 Low-pressure control / compressor control 21.................................
4.3.1 Setting parameters for LP transducer characteristic 22.........................
4.3.2 Low-pressure control neutral zone 22........................................
4.3.3 Control algorithm with low-pressure control 23.................................
4.3.4 Control algorithm with step controller 23......................................
4.3.5 Control algorithm with speed controller 25....................................
4.3.6 Determining the setpoint with speed controller 27..............................
4.3.7 Control algorithm with combined controller 28.................................
4.3.8 Loading and unloading fixed-speed compressors 30...........................
4.3.9 Compressor actuating times 30..............................................
4.3.10 Determining the low-pressure setpoint 32.....................................
4.3.11 Second setpoint – Setpoint increase/decrease 33.............................

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4.3.12 Humidity shift 34...........................................................
4.3.12.1 Ambient data for setpoint shift 34............................................
4.3.13 Booster-/Satellite operation 35..............................................
4.3.14 Demand-dependent calculation of setpoint 37.................................
4.3.15 Processing load-level information 37.........................................
4.3.16 Response to fault conditions 38.............................................
4.3.17 Demand-dependent setpoint shift parameters 38..............................
4.3.18 Compressor control by refrigeration point 38..................................
4.3.19 Disabling refrigeration points 39.............................................
4.3.20 Forced shutdown of compressors / oil equalization 40..........................
4.3.21 Capacity-controlled compressors 40.........................................
4.3.22 Load shedding 42.........................................................
4.3.23 Base load rotation 42......................................................
4.4 Monitoring functions 42.....................................................
4.4.1 High pressure monitoring 43................................................
4.4.2 Low pressure monitoring 44.................................................
4.4.3 Monitoring of the tc/t0 difference 44..........................................
4.4.4 Compressor starts monitoring 45............................................
4.4.5 Monitoring the digital inputs 46..............................................
4.5 High-pressure control / Condenser control 46.................................
4.5.1 Setting HP transducer characteristic 47.......................................
4.5.2 High-pressure control neutral zone 47........................................
4.5.3 Control algorithm for high-pressure control 48.................................
4.5.4 Control algorithm with step controller 48......................................
4.5.5 Control algorithm with speed control 49.......................................
4.5.6 Determining the setpoint for speed control 50.................................
4.5.7 Control algorithm with combined controller 51.................................
4.5.8 Loading and unloading of fixed-speed fans 53.................................
4.5.9 Condenser fan actuating times with step action controller 53....................
4.5.10 Determining the high-pressure setpoint 54....................................
4.5.11 Second setpoint - setpoint increase / decrease 56.............................
4.5.12 Heat recovery mode (HRC) 56..............................................
4.5.13 Relay / control stage actuating mode 57......................................
4.5.14 Fan protection / HP base load rotation 57.....................................
4.6 Controller start 57..........................................................
4.6.1 First start 58..............................................................

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4.6.2 Restart 58................................................................
4.7 Archiving of operating data 58...............................................
4.7.1 Compressor/fan operating hours 58..........................................
4.7.2 Daily run times 59.........................................................
4.7.3 Compressor / condenser daily run times 59...................................
4.7.4 Compressor / condenser starts 59...........................................
4.7.5 Compressor pack activity / utilization 60......................................
5 Startup of VS 300 61......................................................
5.1 Connection and safety notes 61.............................................
5.2 Installation 62.............................................................
5.3 Startup 63................................................................
5.3.1 Basic parameter settings on hardware 63.....................................
5.3.2 Software settings 63.......................................................
5.3.2.1 First start – Loading default settings 64.......................................
5.3.2.2 Changing the access level 64...............................................
5.3.2.3 Setting the CAN Bus address 66............................................
5.3.2.4 Configuring the controller 66................................................
5.3.2.5 Setting the current date and time 67.........................................
5.3.2.6 Other parameters to be set 68...............................................
5.3.2.7 Parameter backup 68......................................................
5.4 Battery replacement 69.....................................................
5.5 Firmware update 69........................................................
5.5.1 Requirements 69..........................................................
5.5.2 Updating the firmware 70...................................................
6 Pin and Terminal Assignments of VS 300 75................................
6.1 View of connecting terminals 76.............................................
6.2 Pin assignments and their function 77........................................
7 Operation of VS 300 79....................................................
7.1 Integral display, indicators and controls 79....................................
7.1.1 Display and LEDs 79.......................................................
7.1.2 Controls 81...............................................................
7.2 First start – Loading default values 82........................................
7.3 Menu and operating structure of VS 300 82...................................
7.4 Parameter setting – general 83..............................................

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7.5 Basic display mode 83.....................................................
7.6 Selecting parameter lists 84.................................................
7.7 Changing the access level 85...............................................
7.8 Displaying actual values and setting parameters (Parameter Lists A and S1 - S4) .......
85
7.9 Setting the current date and time (Parameter List S2) 86.......................
7.10 Parameter groups 87.......................................................
7.11 Setting parameters for the week timer (Parameter List t) 88.....................
7.12 Manual control / Service mode (Parameter List C) 89...........................
7.13 Displaying reported faults (Parameter List F) 89...............................
7.14 Operation System Centre / Store Computer / Operator Terminal 91..............
7.15 Operation possibilities 91...................................................
7.16 Remote control via a terminal 92.............................................
7.16.1 Menus and operating screens 93............................................
7.16.2 Calling the controller menu via remote control 95..............................
7.16.2.1 System Centre CI 4x00 96..................................................
7.16.2.2 Store computer CI 3x00 / operator terminal AL 300 96..........................
7.16.3 Deactivating the input lock-down 97..........................................
7.16.3.1 System centre CI 4x00 97..................................................
7.16.3.2 Store computer CI 3x00 / operator terminal AL 300 97..........................
7.16.4 Activating service mode 98.................................................
7.16.4.1 System centre CI 4x00 98..................................................
7.16.4.2 Store computer CI 3x00 98.................................................
8 Parameter List and Menu Structure of VS 300 99............................
8.1 Parameter list 99..........................................................
8.1.1 Parameter List A: Actual Values System Data 100..............................
8.1.2 Parameter List A: Common Actual Values System Data 100.....................
8.1.3 Parameter List S1: Overview of Main Setpoints - Day/Night Operation 101.........
8.1.4 Parameter List S2: Setpoints Basic Parameters - Day Operation 101..............
8.1.5 Parameter List S2: Setpoints Basic Parameters - Night Operation 102.............
8.1.6 Parameter List S2: Setpoints Basic Parameters - Day/Night Operation 103.........
8.1.7 Parameter List S2: Common Setpoints 105....................................
8.1.8 Parameter List S3: Setpoints System Configuration 105.........................
8.1.9 Parameter List S3: Common Setpoints System Configuration 107.................
8.1.10 Parameter List S3: Basic Settings System Configuration 108.....................
8.1.11 Parameter List S4: Setpoints Alarm Priorities 109...............................

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8.1.12 Parameter List S5: Suction pressure shift / Additional Parameters 110.............
8.1.13 Parameter List t: Setpoints Timers 111........................................
8.1.14 Parameter List C: Service / Check Mode - Defaults Analog Outputs 111...........
8.1.15 Parameter List C: Service / Check Mode - Defaults Relay Outputs 112............
8.1.16 Parameter List F: Alarms - System and Process Fault Reports 113................
8.2 Overview of alarm types 115.................................................
8.3 Menu structure of AL 300 Operator Terminal and CI 3000 Store Computer 116.....
8.4 Menu structure 117.........................................................
8.4.1 Menu 0 Main menu 120.....................................................
8.4.2 Menu 1 Summary 120.......................................................
8.4.3 Menu 2 Actual values 120...................................................
8.4.4 Menu 3 Setpoints 122.......................................................
8.4.5 Menu 4 Clock 138..........................................................
8.4.6 Menu 5 Alarms 139.........................................................
8.4.7 Menu 6 Operating Data 139..................................................
8.4.8 Menu 7 Basic Settings 148...................................................
8.4.9 Menu 8 Service Mode 148...................................................
9 Decommissioning and disposal 151.........................................
9.1 Decommissioning / Demounting 151..........................................
9.2 Disposal 151...............................................................
10 Alarms and Messages of VS 300 153........................................
10.1 Reporting system 153.......................................................
10.2 Message / alarm structure 153...............................................
10.3 Messages / alarms in the VS 300 154.........................................
10.4 Messages / alarms AL 300 Operator Terminal or CI 3000 Store Computer 156.....
10.5 Message / alarm types 156..................................................
10.6 System fault reports 157.....................................................
10.7 Process fault reports 157....................................................
11 Specifications of VS 300 159...............................................
11.1 Electrical data 159..........................................................
11.2 Mechanical data 161........................................................
12 Order No.'s and accessories of VS 300 163..................................
12.1 VS 300 Compact pack controller 163..........................................
12.2 Components for VS 300 163.................................................

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Notice:

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Conventions
Explanation of 'General Instructions'
A general instruction is composed of two elements:
1. A pictogram of a hand at the side of the page as well as
2. The actual text:
For example:
Further information on the device's degree of protection is contained in the chapter ”Technical Data”.
Explanation of 'Safety Instructions and Hazard Warnings'
Safety instructions or hazard warnings are composed of four elements:
1. The pictogram (warning sign / symbol) at the edge of the page.
2. A short, concise description of the danger.
3. A description of the possible consequences.
4. A catalogue with prevention measures.
For example:
Warning - hazardous electrical voltage!
Danger of electric shock! BEFORE and AFTER connection it
must checked that the 230 V AC relay outputs are off load!
On the following pages the warning signs and symbols employed for
the safety instructions and hazard warnings in this documentation are described in more detail.

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Warning Signs and Symbols Employed
Explanation of the warning signs and symbols employed for the safety instructions and hazard warnings in this
documentation:
SAttention symbol - general hazard warning
1. Hazard warning
The attention symbol indicates all safety instructions in this operating and service manual, which, if not
observed, could result in danger to life and limb. Carefully comply with the work safety instructions and
proceed with special caution in these cases.
2. Attention
The attention symbol highlights guidelines and regulations, instructions and correct working procedures
that must be carefully observed in order to prevent damage to or destruction of E*LDS components or a
malfunctioning (for example to avoid damage to goods).
Failure to observe the attention symbol can result in personal injury (in extreme cases serious injuries or
death) and/or material damage!
SVoltage symbol - warns of hazardous electrical voltage
This work safety symbol warns of danger from a hazardous electrical voltage,
with potential consequences such as serious injury or death.
SESD symbol - warns of electrostatic sensitive components and assemblies
This symbol indicates electrostatic sensitive components and assemblies,
for details see chapter 1.5.
SNote symbol
The note symbol highlights practice tips and other useful information contained in this
operating and service manual.
SBattery disposal symbol
Never dispose of this product with other household waste. Please inform yourself of the local regula
tions for the separate disposal of electrical and electronic products. The correct disposal of your old
equipment will protect people and the environment from possible negative effects.
You will find further information in the chapter ”Decommissioning and Disposal”.

Safety instructions
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1 Safety instructions
The safety regulations, codes and notes contained in this section must definitely be observed and
complied with at all times. During repairs on the entire E*LDS system, the accident prevention regu
lations and general safety instructions must be observed. Important information (safety instructions
and hazard warnings) are indicated by corresponding symbols (see page 1 of the chapter ”Conven
tions”).
Follow these instructions in order to prevent accidents and danger to life and limb, as well as dam
age to the E*LDS system.
Warning - hazardous electrical voltage!
Danger of electric shock! Beware of external voltage at the digital inputs and outputs!
All device connections/plugs are only to be plugged in, unplugged and/or wired when off load.
SThis instruction manual is an integral part of the equipment. It must be kept in the proximity of the equipment
and must be stored for future use, so that it can be referred to when necessary. To avoid operating errors, the
operation instructions must always be kept available for operating and maintenance staff, see Chapter 1.2.
SFor safety reasons, the equipment must not be used for any application other than described in the manual
i.e. only for the intended use, see Chapter 1.3.
SBefore using the equipment, always check that its limits are suitable for the intended application.
SCheck that the electric power supply is correct for the equipment before connecting it to power.
SWhen using uncoded plug connectors, it is possible to connect them so that there is a danger to life and limb!
If this cannot be ruled out, coded plug connectors must be used.
SSpecified ambient conditions (e.g. humidity and temperature limits) must be observed and complied with in
order to avoid malfunctioning (see Section “Specifications”).
SCheck correct wiring of the connections before switching on power to the equipment.
SNever operate the equipment without its casing. Before opening the casing the equipment must be switched to
zero potential.
SNote and observe maximum load on relay contacts (see Section “Specifications”).
SContact the supplier in any malfunction.
SNote that all leads running to and from the controller- especially those of the CAN bus - must be shielded and
installed sufficiently clear of other leads carrying live power. Doing so will avoid faulty measurements and will
protect the equipment from external interference via the analog inputs.
Parallel connection of RC elements is recommended for applications in a critical environment.
1. According to experience, error message transmission is not yet fully functional during commis
sioning (no telephone line laid etc.) In such cases it is urgently recommended to monitor the con
troller via the CAN bus using a system centre, a store computer or an operator terminal, and enable
error message transmission e.g. using a GSM modem via a mobile telephone network. In stand
alone operation, or as an alternative to monitoring with the system centre / store computer / operator
terminal, an alarm contact on the controller must be used in order to realise error message transmis
sion via a telephone network.
2. In the interests of fire prevention, allowance should be made at the time of planning the system
for a suitable shutdown device designed to operate in the event of excessive temperature on the
defrost heater (high-temperature cutout).
For further information on the CAN bus, see the operation instructions
”Basic and General Safety and Connection Instructions”.

Safety instructions
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Work on electrical equipment may only be undertaken by authorized and duly trained personnel
(as defined by DIN/VDE 0105 and IEC364) with full observance of the currently valid regulations
contained in the following:
- VDE Regulations
- Local safety codes
- Intended use see chapter 1.3
- BGV A3 - Five Safety Rules see chapter 1.4
- ESD precautions and rules see chapter 1.5.
- Operating instructions
1.1 Disclaimer in the event of non-compliance
These operating instructions contain information on the commissioning, function, operation and maintenance of
the controls and of the associated components.
Observance of these operating instructions is a prerequisite for safe and trouble-free operation.
1.2 Personnel requirements, requirements on staff
Special skills are required for project planning, programming, assembly, commissioning and maintenance work.
This work may be performed by qualified and specially trained staff.
The staff involved in installation, commissioning and maintenance must have received the special training
needed for them to work on the unit and on the automation system.
The project planning and programming staff must be familiar with the safety concepts involved in automation
technology.
Expertise is a requirement for any work on electrical systems. Work on electrical installations may only be per
formed by trained electrical specialists (or may only be performed when directed or supervised by them). The
applicable regulations (e.g. DIN EN 60204, EN 50178, BGV A3, and DIN VDE 0100/0113) must be followed.
The operating staff who deal with the unit/machine and the controls must be correspondingly trained and familiar
with the operating instructions.

Safety instructions
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1.3 Intended use
This control system may only be used for the purpose for which it is intended:
The VS 300 has been designed for use as pack controller in commercial and industrial refrigeration systems
with the intended functional scope as described in these operating instructions, and it is to be used under the
environmental conditions in these instructions.
Follow the safety instructions, as well as the instructions on installation, commissioning, operation and mainte
nance. Only THEN should you start commissioning or operating the machine/system.
The safety and function of the machine/unit is only assured in the use for which it has been intended.
Never use the machine/unit, its components, assemblies or parts of it for a different purpose.
The installation may be only operated for the first time when the entire unit has been shown to conform
to the EC Directives.
1.4 BGV A3 - Five safety rules
The following rules must be strictly observed:
1. Disconnect electric power: Disconnect power at all connections of the entire installation on which
work is to be carried out.
Warning - hazardous electrical voltage!
Beware of possible external power supplies! BEFORE and AFTER connection it must be checked
that the controller is off load! All device connections/plugs are only to be plugged in, unplugged and/
or wired when off load.
2. Secure against reconnection of power: Tag the disconnected equipment with the following information:
‐ What has been disconnected from power
‐ Why it has been disconnected
‐ Name of person who disconnected power
‐ Use a suitable lock-out (e.g. padlock) to prevent reconnection of power.
3. Make sure that power is off (authorized and duly trained personnel only):
‐ Check with voltmeter immediately before use.
‐ Check that power is off on all connections at the disconnection point.
‐ Check that power is off on all connections at the place of work.
4. Ground and short circuit: Ground and then short circuit all electrical parts at the place of work.
5. Cover or bar off adjacent power-carrying parts: Any equipment carrying power adjacent to the work area
must be covered by suitable means (e.g. insulating cloths or panels).

Safety instructions
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1.5 Electrostatic sensitive devices (ESDs)
Electronic components and assemblies (e.g. printed circuit boards) are vulnerable to electrostatic
discharge. Regulations for handling and working with electrostatic sensitive devices must definitely
be observed and complied with, see also section 1.5.1!
All electrostatic sensitive devices (ESDs) are identified by the warning sign illustrated. Electrostatic discharge is
caused by friction of insulating materials (e.g. floor coverings, synthetic fiber clothing, etc.).
Even slight charges can cause components to be damaged or destroyed. Damage cannot always be ascer
tained directly and it may take time for the component to actually fail in operation.
1.5.1 ESD - Rules for handling and working
Transport and store ESDs only in the protective packaging provided.
Avoid materials that may produce electrostatic discharge, for example
‐ Plastic containers and table tops
‐ Synthetic fiber clothing
‐ Plastic-soled shoes
‐ Plastic file covers
‐ Styrofoam packaging
‐ Computer monitors, etc.
Preferably wear the following:
‐ Cotton work clothes
‐ ESD shoes with conductive soles or leather soles
Use the following:
‐ Conductive flooring
‐ ESD workstations equipped with suitable tools (grounded soldering guns, antistatic wrist straps, etc.)
‐ Conductive ESD bags, conductive plastic containers, IC tubes or cartons lined with conductive foam
‐ Containers and worktops made of wood, metal or conductive plastics or paper bags
1.6 Abbreviations used
DIN Deutsches Institut für Normung e. V.
EGB Elektrostatisch Gefährdete Bauelemente oder Baugruppen
ESD Electro-static discharge (Electro Sensitive Devices)
VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V.
IEC International Electric Committee
BGV A3 Employer’s Liability Association regulations for health and safety in the workplace

System Design of VS 300
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2 System Design of VS 300
The VS 300 Pack Controller is a modular-design unit.
Alarm
relay
module*
Relay
module 1
Relay
module 2*
2x relay output 230 V AC
Changeover contact bistablel
4x Relay output 230 V AC
Changeover contact
4x Relay output 230 V AC
Changeover contact
4x Relay output 230 V AC
Changeover contact
2x Analog output
Frequency converter 0-10 V
*: optionally
modules
TTY interface
Firmware update
Parameterisation
4x digital inputs 230 V AC
potential free
2x analog inputs
Drucktransmitter 4-20 mA
Relay
module 3*
CAN bus-
module*
Analog- / digital
IO module
1x universal
switching contact
CAN bus
UA 300
CAN bus
LDSWin
Remote maintenance
system
ZNR. 51203 50 030 E1
VS 3010
VS 3010 BS
FS 3010
Operator
terminal
AL 300
Store
computer
CI 3000
Service-PC
(only VS 300)
with LDSWin
Alarm
device
(e.g.
modem call)
Modem
Remote-PC
with LDSWin
Printer
Service PC
(e.g. market office
with LDSWin)
The integration of the VS 300
in the E LDS-System is only possible
with the optional CAN bus module!
Basic configuration
- Integral power supplyl 230 V AC
- Front operator panel with 4-digit 7-segment LED display, 12 status LEDs,
4 trend LEDs, 4 operating keys
- 1 universal switching contact
VS 300
See section 5 Pin and Terminal Assignments for detailed information on device and terminal assignment for the
VS 300 Pack Controller.
Interfaces
CAN bus: For communication in LDS System
TTY: For firmware update and parameter setting of VS 300

System Design of VS 300
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Basic configuration - Front
1x Front operator panel with 4-digit 7-segment LED display
12 x Status LEDs indicating operating status of the relay/control stages
4 x Trend LEDs showing temperature/pressure status
(high, low or within neutral zone)
4 x Operating keys and a universal switching contact.
Basic configuration - Rear
1 x Analog/digital IO module
S4 digital inputs 230 V AC
S2 analog inputs, pressure transducer 4-20 mA
S2 analog outputs, speed adjuster/FC 0-10 V
STTY port
1 x Universal contact to actuate external devices
1 x Power supply connection
Available expansion stages:
Number of
relay modules
1
(with 4 relay outputs)
2
(with 8 relay outputs)
3
(with 12 relay outputs)
CAN bus without CAN bus module
(stand alone operation)
with CAN bus module* with CAN bus module*
Order number EVS300A001 EVS300A003 EVS300A004
* CAN bus module
With the CAN bus module added, the VS 300 Pack Controller can be operated fully by a connected terminal
(AL 300 Alarm Terminal or CI 3000 Store Computer), messages/alarms can be retrieved and processed, or the
controller can be integrated in the LDSWin remote monitoring system.

System Design of VS 300
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2.1 New features compared to earlier versions
From Version 2.10:
SIncrease of the system stability
From Version 2.09:
SFollowing refrigerants are supported:
R22, R502, R134a, R404A, R402A, R717, R1270, R507, R407C, R410A, R290, R744 (transcritical operation
not available), R407F, R422A, R422D, R408A, R407D, R407A, R427A, R438A, R512a, R170, R600, R600a,
R449A, R450A, R448A, R455A, R447B, R1234ze, R1233zd, R41234yf
From Version 1.74:
SExtended range for pressure transmitter (up to 75 bar)
From Version 1.72:
SCentralized time synchronization (master clock):
Date and time can be set with the pack controller for the complete system, if no System Centre, Store Com
puter or Operating Terminal ar available. Also performs cyclic synchronization of internal clocks in all E*LDS
components via the CAN bus.
From Version 1.55:
SDemand dependent t0-shift
SMonitoring of the minimum t0-tcdifference
As of November 01, 2006, the pack controller is produced in a new unit version!
A point to note in wiring is that arrangement of the connections for digital and analog inputs has
been modified as part of advanced technical design (see illustration):
ADDRESS
CAN-BUS
DIGITAL 230 V AC
1
4
2
3
1
A41
A42
A51
A52
1
2
3
4
D31
D32
D41
D42
D12
D11
D21
D22
A12
A22
A32
A21
A11
A31
5
0
23
14
6
7
8
9
TTY
ANALOG IN | ANALOG OUT
ADDRESS
TTY ANALOG OUT
INPUTS
DIGITAL 230 V AC
ANALOG
1
A41
A42
A51
A52
1
2
3
4
D31
D32
D41
D42
D12
D11
D21
D22
A12
A22
A32
A21
A11
A31
CAN-BUS
4
2
3
1
5
0
23
14
6
7
8
9
NEW
ARRANGEMENTUNTIL
NOW
ZNR.51203 63830 E0
From Version 1.46:
SNTLT controller configuration introduced
SConsumer control with compressor speed control
SSupport for English and French languages

System Design of VS 300
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Notice:

Application of VS 300
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3 Application of VS 300
The VS 300 Pack Controller is designed for controlling small to medium refrigeration compressor packs and
condensers. It contains its own user interface with 4-digit 7-segment LED display and is suitable for stand-alone
use. When expanded by an optional CAN bus module, it can be fully integrated into the LDSWin remote moni
toring system. Additionally, it can be combined with an optional alarm module containing two alarm relays (Prior
ity 1 and Priority 2).
For the compressor pack and condenser the VS 300 provides the following functions:
SControl and regulation
SFault reporting
SFault archiving
SMonitoring
SArchiving
These functions are as follows:
Pressure control with two freely configurable control loops for one or two independent refrigerant circuits (tem
perature/pressure ranges: NT - low-pressure normal-temperature refrigeration, LT - low-pressure low-tempera
ture refrigeration and HP - high pressure) Depending on the expansion stage, the maximum number of relay/
control stages is as follows:
‐ 4 relay/control stages (basic configuration)
‐ 8 relay/control stages (first expansion stage)
‐ 12 relay/control stages (second expansion stage)
The relay/control stages can be allocated to one control loop or split between the two control loops. Capacity-
controlled compressors with up to three capacity stages are supported.
SThe following control types are supported:
- Step control
- Speed control
- Combined control
SBase load rotation (running sequence control)
SLoad shedding
SBooster operation
SData archiving
- Messages/alarms
- Starts
- Run times
- Activity/utilization
SMonitoring functions

Application of VS 300
12 Doku-Version 2.05 - Firmware 2.10 - 15. September 2017
Four freely configurable inputs are available and can be assigned the following functions:
‐ Fast unload
‐ Load shedding
‐ Second setpoint toggle
‐ External alarm
‐ Heat recovery (HR) mode
‐ Safety loop
3.1 System expansion options
Potential applications of the VS 300 are illustrated in the following diagrams. Depending on the expansion stage,
either 4, 8 or a maximum of 12 relay/control stages (see section 1 Design) can be divided among the compres
sor or condenser stages for control.
SLow-pressure and high-pressure control. Available operating modes are NT/HP or LT/HP
HP
ZNR.51203 52 030 E0
LP
NT/LT
0NT/LT
p
C
p
to NT/LTrefr.point
Regelkreis 2
VS 300
CL 2CL 1
Controlloop 2
Controlloop 1
from NT/LTrefr.point
SControl of two independent low-pressure loops. Available operating modes are NT/NT, NT/LT or LT/LT
ZNR.51203 52 130 E0
LP
NT/LT
LP
NT/LT
0NT/LT
p
0NT/LT
p
to NT/LTref.point to NT/LTref.point
Regelkreis 2
VS 300
CL 2CL 1
Controlloop 2Controlloop 1
from NT/LTref.point from NT/LTref.point