Friedhelm loh Rittal 3359 series User manual

Enclosure cooling unit

Assembly and operating instructions

3359.xxx

3273.xxx

3382.xxx

3383.xxx

3384.xxx

3385.xxx

3386.xxx

3387.xxx

Contents

2Rittal enclosure cooling unit

Contents

1 Notes on documentation .................. 3

1.1 CE labelling.................................................. 3

1.2 Storing the documents................................. 3

1.3 Symbols used in these operating instructions 3

1.4 Other applicable documents ........................ 3

2 Safety notes ..................................... 3

3 Device description ............................ 3

3.1 TÜV-tested output measurement to

DIN EN 14511 .............................................. 4

3.2 Functional description .................................. 4

3.2.1 How it works ......................................................... 4

3.2.2 Control .................................................................. 4

3.2.3 Bus mode (e-Comfort controller only) .................... 4

3.2.4 Safety devices ....................................................... 5

3.2.5 Condensation ....................................................... 5

3.2.6 Filter mats ............................................................. 5

3.2.7 Door limit switch ................................................... 5

3.2.8 Additional interface X3 .......................................... 5

3.3 Proper use, foreseeable misuse ................... 5

3.4 Scope of supply........................................... 6

4 Assembly and connection ................ 6

4.1 Choosing the installation site........................ 6

4.2 Notes on assembly ...................................... 6

4.2.1 General ................................................................. 6

4.2.2 Layout of the electronic components in the

enclosure .............................................................. 6

4.3 Fitting the cooling unit .................................. 7

4.3.1 Making the cut-outs .............................................. 7

4.3.2 Top mounting of the cooling unit ........................... 7

4.4 Connecting the condensate discharge ......... 8

4.5 Notes on electrical installation ...................... 9

4.5.1 Connection data ................................................... 9

4.5.2 Overvoltage protection and supply line load .......... 9

4.5.3 Three-phase devices ............................................. 9

4.5.4 Door limit switch ................................................... 9

4.5.5 Notes on the flicker standard ................................ 9

4.5.6 Potential equalisation ............................................ 9

4.6 Making the electrical connection ................ 10

4.6.1 Bus connection (only when interconnecting several

units with a Comfort controller) ............................ 10

4.6.2 Connection X3 for serial interface ........................ 10

4.6.3 Installing the power supply .................................. 11

4.7 Finalising assembly .................................... 12

4.7.1 Installing the filter media ...................................... 12

4.7.2 Fitting the cooling unit ......................................... 12

4.7.3 Setting the filter mat monitor ............................... 12

5 Start-up .......................................... 13

6 Operation ....................................... 13

6.1 Control using the e-Comfort controller ....... 13

6.1.1 Properties ........................................................... 13

6.1.2 Eco mode ........................................................... 13

6.1.3 Launching test mode .......................................... 14

6.1.4 General information about programming ............. 14

6.1.5 Editable parameters ............................................ 15

6.1.6 Programming overview ....................................... 16

6.1.7 Defining system messages for evaluation ............ 17

6.1.8 Setting the master/slave identifier ........................ 18

6.1.9 Evaluating system messages .............................. 18

6.1.10 Resetting the e-Comfort controller ...................... 20

7 Inspection and maintenance .......... 20

7.1 Compressed air cleaning............................ 20

8 Storage and disposal ..................... 22

9 Technical details ............................ 22

9.1 Technical specifications.............................. 22

9.2 Performance diagrams............................... 25

10 List of spare parts .......................... 26

11 Appendix ....................................... 28

11.1 Cut-out and hole sizes ............................... 28

11.1.1 Dimensions for assembly .................................... 28

11.2 Electrical wiring plan................................... 29

Rittal enclosure cooling unit 3

1 Notes on documentation

1.1 CE labelling

Rittal GmbH & Co. KG confirms the conformity of the

cooling unit with the European Union's Machinery Di-

rective 2006/42/EC and EMC Directive 2014/30/EC. A

corresponding declaration of conformity has been is-

sued. This can be found at the end of this document, or

on the Rittal homepage.

1.2 Storing the documents

The assembly and operating instructions as well as all

other applicable documents are an integral part of the

product. They must be issued to everyone who works

with the unit and must always be available and on hand

for operating and maintenance personnel.

1.3 Symbols used in these operating in-

structions

The following symbols are used in this documentation:

This symbol indicates an "action point" and shows that

you should perform an operation or procedure.

1.4 Other applicable documents

Assembly and operating instructions in paper and digital

format are available for the unit types described here.

We cannot accept any liability for damage associated

with failure to observe these instructions. Where applica-

ble, the instructions for any accessories used also apply.

2 Safety notes

Please observe the following general safety notes when

assembling and operating the unit:

– Assembly, installation and servicing may only be per-

formed by properly trained specialists.

– Do not obstruct the air inlet and air outlet of the cooling

unit inside and outside the enclosure (see sec-

tion4.2.2 "Layout of the electronic components in the

enclosure").

– The heat loss of the components installed in the enclo-

sure must not exceed the specific useful cooling pow-

er of the cooling unit.

– The cooling unit must always be transported in a hori-

zontal position.

– Use only original spare parts and accessories.

– Do not make any changes to the cooling unit other

than those described in these instructions or associat-

ed instructions.

– Risk of burns! On cooling units with automatic con-

densate evaporation, the surface of the thermal ele-

ment will get very hot during operation, and will remain

so for some time afterwards.

– The mains connector of the cooling unit must only be

connected and disconnected with the system de-en-

ergised. Connect the protective device specified on

the rating plate.

3 Device description

Depending on the model chosen, your cooling unit may

vary in appearance from the illustrations contained in

these instructions. However, the functions are identical

in principle.

Danger!

A dangerous situation in which failure to

comply with the instructions will result in

death or severe injury.

Warning!

A dangerous situation which may cause

death or serious injury if the instructions

are not followed.

Caution!

A dangerous situation which may lead to

(minor) injuries if the instructions are not

followed.

Note:

Important notices and indication of situations

which may result in material damage.

3 Device description

4Rittal enclosure cooling unit

Fig. 1: Device description

Key

1Enclosure

2 Air outlet holes

3 Rating plate

4 Louvred grille for air inlet

5Display

6 X2 master-slave connection (underside of the unit)

7 X1 terminal strip (underside of the unit)

8 X3 optional serial interface (underside of the unit)

9 Dispatch bag

10 Twin-threaded bolt

11 Condenser

12 Condensate discharge

3.1 TÜV-tested output measurement to

DIN EN 14511

All TopTherm cooling units in the output range from 300

to 4000 W are tested to the latest EN 14511-1-4:2013-

12 standard by independent test institute TÜV Nord.

This means you have peace of mind about the design of

the climate control solution and you can be sure you are

getting the performance you are paying for.

3.2 Functional description

Enclosure cooling units are designed to dissipate heat

from enclosures by cooling the air inside the enclosure

and so protect the temperature-sensitive components.

It is mounted on the roof of an enclosure.

3.2.1 How it works

The cooling unit (compression refrigeration system)

comprises four main components (see fig. 2): the evap-

orator (1), the refrigerant compressor (2), the condenser

(3), and the control or expansion valve (4), which are

connected by suitable pipework.

This circuit is filled with a readily boiling substance, the

refrigerant. The refrigerant R134a (CH2FCF3) is chlorine-

free. Its Ozone Depletion Potential (ODP) is 0, making it

very eco-friendly. A filter dryer (5) which is integrated into

the hermetically sealed cooling circuit provides effective

protection against moisture, acid, dirt particles, and for-

eign bodies within the cooling circuit.

Fig. 2: Cooling circuit

In the evaporator coil (1), the liquid refrigerant is convert-

ed to a gaseous state. The energy needed for this pur-

pose is taken from the enclosure air in the form of heat,

which has the effect of cooling the enclosure air. In the

compressor (2), the refrigerant is heavily compressed,

so that it achieves a higher temperature inside the con-

denser (3) than the ambient air. This means that excess

heat may be emitted to the ambient air via the surface of

the condenser, as a result of which the temperature of

the refrigerant drops and it is converted back into liquid.

It is re-injected into the evaporator coil via a thermostatic

expansion valve (4), which causes it to cool down fur-

ther, and is then once again able to absorb the energy

from the enclosure air in the evaporator coil. The whole

cycle begins again.

3.2.2 Control

Rittal enclosure cooling units are fitted with a controller

for setting the functions of the cooling unit (display plus

extended functions, see section6 "Operation").

3.2.3 Bus mode (e-Comfort controller only)

The serial unit interface X2 allows you to create a bus

connection with up to ten cooling units using the master-

slave cable (shielded, four-wire cable, Model No.

3124.100). This allows you to implement the following

functions:

– Parallel unit control (the cooling units in the network

can be switched on and off simultaneously)

– Parallel door status message ("door open")

– Parallel collective fault message

Data is exchanged via the master-slave connection.

During commissioning, assign an address to each unit

that also includes the identifier "master" or "slave".

6, 7, 8

PSAH

pressure

switch

Condenser fan

Expansion valve (4)

Temperature

control

Filter dryer (5)

Internal circuit

Compressor (2)

External circuit

Evaporator fan

Evaporator coil (1)

Condenser (3)

Rittal enclosure cooling unit 5

3 Device description

3.2.4 Safety devices

– In the cooling cycle, the cooling unit has a tested pres-

sure switch to EN 12 263 which is set to maximum PS

(permissible pressure); this operates via an automatic

reset device whenever the pressure drops again.

– Temperature monitoring prevents the evaporator coil

from icing over. If there is a risk of icing, the compres-

sor switches itself off and automatically switches itself

back on again at higher temperatures.

– The refrigerant compressor and the fans are equipped

with thermal winding shields to protect against excess

current and excess temperatures.

– In order to allow a reduction of pressure inside the

compressor and hence a safe restart, once it has been

switched off (e.g. upon reaching the set temperature

via the door limit switch function or via de-energising),

the device will switch back on with a delay of 180 sec-

onds.

– The device has floating contacts on the connection

pins (terminals 3 – 5), via which system messages

from the device may be polled, e.g. using a PLC (2x

normally open contacts, e-Comfort controller).

3.2.5 Condensation

At high levels of humidity and low temperatures inside

the enclosure, condensation may form on the evapora-

tor coil.

The cooling units have an automatic electrical conden-

sate evaporator. The thermal component used for this

purpose is based on self-regulating PTC technology.

Condensate arising on the evaporator coil is collected in

a tank in the internal circuit of the cooling unit. When the

water level rises, the water enters the PTC thermal com-

ponent and is evaporated (through-flow heater princi-

ple). The water vapour streams out of the cooling unit

with the airflow from the external fan.

The PTC thermal component is permanently connected

and has no switchpoint. It is protected against short-cir-

cuits with miniature fuses (F1.1, F1.2). If the fuse has

tripped, any condensation is drained off via the safety

overflow.

In the case of a malfunction or a failure in the thermal

component, the condensation water is routed out of the

unit via a drain pipe at the side or rear for safety reasons.

For this purpose, a hose must be connected to the con-

densate nozzle (see section4.4 "Connecting the con-

densate discharge"). Condensate hoses are available as

accessories (refer also to the accessories section in the

Rittal Catalogue).

3.2.6 Filter mats

The entire cooling unit condenser is covered with a dirt-

repelling, easy-to-clean RiNano coating. In many appli-

cations, therefore, the use of filter media is unnecessary,

particularly with dry dusts.

For dry, coarse dust and lint in the ambient air, we rec-

ommend installing an additional PU foam filter mat (avail-

able as an accessory) in the cooling unit. Depending on

the incidence of dust, you will need to replace the filter

mat from time to time.

For air containing oil condensate, we recommend the

use of metal filters (also available as an accessory).

These may be cleaned with suitable detergents and re-

used.

Function of the filter mat monitor (with e-Comfort

controller only):

Dirt on the filter mat is automatically determined by

measuring the temperature difference in the external cir-

cuit of the cooling unit. As the level of filter mat soiling in-

creases, the temperature difference will increase. The

setpoint value of the temperature difference in the exter-

nal circuit adapts automatically to the relevant operating

points in the performance diagrams. Hence there is no

need to readjust the setpoint value for different unit op-

erating points.

3.2.7 Door limit switch

The cooling unit may be operated with a floating door

limit switch connected. The door limit switch is not in-

cluded with the supply (available as an accessory, Model

No. 4127.010).

The door limit switch function causes the fans and the

compressor in the cooling unit to be switched off after

approximately 15 seconds when the enclosure door is

opened (contacts 1 and 2 closed). This prevents the for-

mation of condensation inside the enclosure while the

enclosure door is open. In order to prevent damage to

the unit, it is equipped with an ON delay: The evaporator

fan cuts back in with a delay of approximately 15 sec-

onds after the door has been closed, while the condens-

er fan and compressor switch on after approximately

3minutes.

3.2.8 Additional interface X3

An additional interface card may be connected to the 9-

pole SUB-D connector X3 in order to incorporate the

cooling unit into higher-level monitoring systems (availa-

ble as an accessory, interface card Model No.

3124.200).

3.3 Proper use, foreseeable misuse

The cooling unit is only intended for cooling connected

enclosures. Any other use is not permitted.

– The unit must not be installed and operated in loca-

tions which are accessible to the general public (see

DIN EN 60335-2-40, paragraph 3.119).

Note:

No external voltage may be applied to the

door contacts (terminals 1 and 2).

Note:

The electrical signals at the interface are of

an extra-low voltage (not extra-low safety

voltages to EN 60 335).

4 Assembly and connection

6Rittal enclosure cooling unit

– The unit is designed solely for stationary use.

The cooling unit is state of the art and built according to

recognised safety regulations. Nevertheless, improper

use can pose a threat to the life and limb of the user or

third parties, or result in possible damage to the system

and other property.

Consequently, the cooling unit must only be used prop-

erly and in a technically sound condition! Any malfunc-

tions which impair safety should be rectified immediate-

ly.

Proper use also includes the observance of the docu-

mentation provided, and compliance with the inspection

and maintenance conditions.

Rittal GmbH & Co. KG is not liable for any damage which

may result from failure to comply with the documenta-

tion provided. The same applies to failure to comply with

the valid documentation for any accessories used.

Inappropriate use may be dangerous. Examples of inap-

propriate include:

– Use of the cooling unit over long periods with the en-

closure open.

– Use of impermissible tools.

– Improper operation.

– Improper rectification of malfunctions.

– Use of accessories not approved by Rittal GmbH &

Co. KG.

3.4 Scope of supply

The unit is supplied in a packaging unit in a fully assem-

bled state.

Please check the scope of supply for completeness.

4 Assembly and connection

4.1 Choosing the installation site

When choosing the installation site for the enclosure,

please observe the following:

– The site for the enclosure and the positioning of the

cooling unit must be carefully selected so as to ensure

good ventilation. Depending on the siting of the unit, if

several units are installed directly adjacent to one an-

other, the distance from the wall must be at least

200 mm.

– The cooling unit must be installed and operated in a

horizontal position (maximum deviation: 2°).

– The site must be free from excessive dirt, aggressive

ambient conditions and moisture.

– The ambient temperature must be within the limits

specified on the rating plate.

– It must be possible to fit a condensate discharge (see

section4.4 "Connecting the condensate discharge").

– The mains connection data as stated on the rating

plate of the unit must be guaranteed.

4.2 Notes on assembly

4.2.1 General

– Check the packaging carefully for signs of damage.

Traces of oil on damaged packaging are an indication

of refrigerant loss and leakages. Any packaging dam-

age may be the cause of a subsequent functional fail-

ure.

– The enclosure must be sealed on all sides (IP 54). In-

creased condensation will occur if the enclosure is not

airtight.

– In order to avoid excessive condensation inside the

enclosure, we recommend installing a door limit

switch (e.g. 4127.010) which deactivates the cooling

unit when the enclosure door is opened (see sec-

tion3.2.7 "Door limit switch").

4.2.2 Layout of the electronic components in the

enclosure

Qty. Description

1 Enclosure cooling unit

Dispatch bag:

– Sealing plate (3273.xxx, 3383.xxx, 3384.xxx,

3385.xxx)

– Sealing frame

– Plug-in terminal strip

– Assembly and operating instructions

– Angular connector

– Screw-in nozzle

3 Blind rivet (3386.xxx, 3387.xxx)

1 Drilling template

Tab. 1: Scope of supply

Note:

Risk of condensation!

When arranging the components inside the

enclosure, please ensure that the cold air-

flow from the cooling unit is not directed at

active components. Please also ensure that

the cold airflow is not directed at the warm

exhaust airflow from active

components such as converters. This may

lead to an air short-circuit and therefore pre-

vent adequate climate control, or may even

cause the cooling unit’s internal safety de-

vices to cease cooling operation.

Rittal enclosure cooling unit 7

4 Assembly and connection

Fig. 3: Never direct the cold airflow at active components

Exercise particular caution with the airflow from the

blowers of built-in electronic components (see fig. 3).

Components for targeted air routing are available as ac-

cessories – please refer to the Rittal Catalogue.

Fig. 4: Targeted air routing inside the enclosure

Fig. 5: Cover bungs

4.3 Fitting the cooling unit

The enclosure cooling unit is mounted on top of the en-

closure roof:

To this end, cut-outs must be made in the roof plate as

per the drilling template included with the supply.

4.3.1 Making the cut-outs

Affix the supplied drilling template to the roof of the en-

closure using adhesive tape.

There are dimensioning lines on the drilling template to

suit the installation type for your cooling unit.

Make the cut-outs including the line width as per the

drilling template.

Deburr the cut-outs.

4.3.2 Top mounting of the cooling unit

Affix the supplied sealing frame onto the cut out roof

plate.

Note:

When using an air duct system, care must

be taken to ensure that it is laid straight and

without kinks wherever possible. This mini-

mises the resistance to the cold airflow.

It is important to ensure even air circulation

inside the enclosure. Under no circum-

stances should air inlet and outlet openings

be obstructed, otherwise the cooling perfor-

mance of the unit will be reduced. Ensure a

suitable distance from electronic compo-

nents and other installed enclosures so that

the required air circulation is not obstructed

and prevented.

One cold air outlet from the cooling unit

must be kept open at all times when operat-

ing with the air duct, to prevent the accumu-

lation of cold air inside the unit.

Note:

When using the cover bungs, only a maxi-

mum of 1 or 2 cold air outlet openings may

be sealed, depending on the unit type.

Note:

Pre-configured, reinforced roof plates with

cut-outs to match your enclosure are avail-

able as accessories; refer to the Rittal Cata-

logue.

Caution!

Carefully deburr all cut-outs to prevent

injuries caused by sharp edges.

3273.xxx

3383.xxx

3384.xxx

3385.xxx

3359.xxx

3382.xxx

3386.xxx

3387.xxx

max. 2x max. 1x

4 Assembly and connection

8Rittal enclosure cooling unit

Fig. 6: Sealing frame on roof plate

Affix the supplied sealing plate to the bottom of the

plastic base of the cooling unit (3273.xxx, 3383.xxx,

3384.xxx, 3385.xxx).

Fig. 7: Sealing plate underneath the plastic base of the cooling

unit

Mount the cooling unit on the enclosure roof.

Screw the supplied twin-threaded bolts into the core

holes in the plastic base on the underside of the cool-

ing unit with a maximum of 5 Nm.

Secure the unit using the supplied washers and nuts.

Fig. 8: Roof plate reinforcement for the TS 8 enclosure

Accessories for roof plate reinforcement with TS:

TS roof plates

Quick-change frame

Punched rail

U nut

Fastening bracket

Threaded block

(refer also to Accessories in the Rittal Catalogue)

4.4 Connecting the condensate discharge

A condensate discharge hose (Ø 1/2˝) may be fitted to

the cooling unit.

The condensate discharge

– must be laid with a suitable and constant gradient (no

siphoning)

– must be laid without kinks

– must not have a reduced cross-section if extended

The condensate hose is available as an accessory (refer

also to Accessories in the Rittal Catalogue).

Fig. 9: Connecting the condensate discharge

Connect a suitable hose to one of the two condensate

nozzles and secure using a hose clip.

The condensate nozzle that is not required should be

sealed.

Lay the condensate hose, e.g. into a drain.

Fig. 10: Laying the condensate discharge

Note:

In order to achieve a permanent seal be-

tween the cooling unit and the enclosure,

the mounting surface should be reinforced

or supported if necessary. This is particular-

ly applicable with large roof areas.

½"

Rittal enclosure cooling unit 9

4 Assembly and connection

4.5 Notes on electrical installation

When performing the electrical installation, it is important

to observe all valid national and regional regulations as

well as the provisions of the responsible power supply

company. The electrical installation may only be carried

out by a qualified electrician who is responsible for com-

pliance with the applicable standards and regulations.

4.5.1 Connection data

– The connected voltage and frequency must corre-

spond to the values stated on the rating plate.

– The cooling unit must be connected to the mains via

an all-pin isolating device, which ensures at least

3 mm contact opening when switched off.

– No additional temperature control may be connected

upstream of the unit at the supply end.

– Install the protective device specified on the rating

plate to protect the line and equipment from short-cir-

cuits.

– The mains connection must ensure low-noise poten-

tial equalisation.

4.5.2 Overvoltage protection and supply line load

– The unit does not have its own overvoltage protection.

Measures must be taken by the operator at the supply

end to ensure effective lightning and overvoltage pro-

tection. The mains voltage must not exceed a toler-

ance of ±10%.

– In accordance with IEC 61 000-3-11, the unit is in-

tended solely for use at sites with a continuous cur-

rent-carrying capacity (incoming mains power supply)

of more than 100 A per phase and with a supply volt-

age of 400/230 V. If necessary, the power supply

company must be consulted to ensure that the contin-

uous current-carrying capacity at the point of connec-

tion to the public grid is sufficient for connection of

such a unit.

– The fans and compressors in single- and three-phase

units are intrinsically safe (thermal winding protection).

The same also applies to all transformer versions and

to special-voltage units which are likewise equipped

with a transformer.

– Install the protective device specified on the rating

plate to protect the line and equipment from short-cir-

cuits (miniature circuit-breaker with appropriate char-

acteristic – e.g. "K" characteristic – or gG standard

type slow fuse, circuit-breaker for plant or transformer

protection). Select a suitable circuit-breaker in accord-

ance with the information specified on the rating plate:

Set it to the minimum specified value. This will achieve

the best short-circuit protection for cables and equip-

ment.

Example: Specified setting range 6.3 – 10 A; set to

6.3 A.

4.5.3 Three-phase devices

– The electrical connection for devices in the three-

phase version MUST be made with a clockwise rotat-

ing field.

– The three-phase version must be connected to a TN

network with star earthing via a circuit-breaker for

plant protection (current setting as per the rating

plate). Three-phase units with special voltages must

be protected with a circuit-breaker for transformer

protection (category AC-3) as per the rating plate.

– Units designed for three phase 400/460 V feature ad-

ditional monitoring of the rotary field or the absence of

a phase. If the rotary field is incorrect or a phase is ab-

sent, the unit will not run.

4.5.4 Door limit switch

– Each door limit switch must only be assigned to one

cooling unit.

– Several door limit switches may be connected in par-

allel to one cooling unit.

– The minimum cross-section for the connection cable

is 0.3 mm2for a cable length of 2 m.

We recommend the use of a shielded cable.

– The line resistance to the door limit switch must not

exceed a maximum of 50 .

– The door limit switch only supports a floating connec-

tion; no external voltages.

– The contact of the door limit switch must be closed

when the door is open.

The safety extra-low voltage for the door limit switch is

provided by the internal power pack: Current approx.

30 mA DC.

Connect the door limit switch to terminals 1 and 2 of

the connector.

4.5.5 Notes on the flicker standard

The flicker limits specified in standard EN 61 000-3-3 or

-3-11 are adhered to, provided the supply impedance is

less than approx. 1.5 .

Where necessary, the unit operator should measure the

connected impedance or consult the responsible power

supply company. If there is no way of influencing the

supply impedance and sensitive installed components

(e.g. BUS) are subjected to interference, a line reactor or

starting-current limiting device should be connected up-

stream of the cooling unit to restrict the startup current

of the cooling unit.

4.5.6 Potential equalisation

If, for EMC reasons, the unit is to be integrated into the

customer’s existing potential equalisation system, a

conductor with a larger nominal cross-section can be

connected to the potential equalisation connection point

(attachment points) on the roof-mounted cooling units.

According to the standard, the PE conductor in the

mains connection cable is not classified as an equipo-

tential bonding conductor.

4 Assembly and connection

10 Rittal enclosure cooling unit

Fig. 11: Connection point, potential equalisation

4.6 Making the electrical connection

4.6.1 Bus connection

(only when interconnecting several units

with a Comfort controller)

When using several cooling units, the serial device inter-

face X2 can be used to connect up to ten cooling units

with the bus cable (Model No. 3124.100).

When interconnecting, please note the following:

– De-energise the cooling units to be connected

– Ensure proper electrical insulation

– Make sure the cables are not laid in parallel to power

lines

– Make sure that the lines are short

4.6.2 Connection X3 for serial interface

The interface card (Model No. 3124.200) may be con-

nected to X3. This is used to evaluate system messages

in a PLC, for remotely setting parameters and monitor-

ing, or for integration into the facility management sys-

tem.

Fig. 12: Connection example: Master-slave operation

Key

1 Serial interface (Model No. 3124.200)

2 Serial interface cable

3 Master-slave bus cable (Model No. 3124.100)

RTT Rittal TopTherm cooling units

X1 Supply connection/door limit switch/alarms

X2 Master/slave connection Sub-D, 9-pole

X3 Serial interface Sub-D, 9-pole

St. Sub-D connector, 9-pole

Bu. Sub-D jack, 9-pole

Adr. Address

Note:

The electrical signals at the X2 interface are

of an extra-low voltage (not extra-low safety

voltages in accordance with EN 60 335-1).

Note:

With the last slave unit in the group, do not,

under any circumstances, connect the re-

maining socket of the Y cable 3124.100 into

interface X3 of the cooling unit!

CMC

I/O unit

RTT

Master

Adr.: 09

X2 X3

X2 X3 X2

X2 X2

St. St. St.

Bu.

St.

Bu.

Adr.: 11 Adr.: 12RTT

Slave

RTT

Slave

Adr.: 19RTT

Slave

St.

Bu.

St.

Bu.

Rittal enclosure cooling unit 11

4 Assembly and connection

Fig. 13: Connection example: Door limit switch and master-slave operation

Key

1 Master cooling unit

2 Slave cooling units

3 2-door enclosure with two door limit switches

4 Enclosure with door limit switch

4.6.3 Installing the power supply

Complete the electrical installation as per the wiring

plan inside the cooling unit underneath the cable shaft

cover (see fig. 29 on page 22, marked with an arrow).

If you would like the system messages from the cool-

ing unit to be evaluated via the system message relay,

you should also connect a suitable low-voltage cable

to connection pins 3 – 5.

Fig. 14: Electrical wiring plan no. 1

X10

12345

X10

X10 X10 X10 X10

X2 X2 X2 X2 X2 X2

12345

L2 L3 L1

12345

L2 L3 L1

12345

L2 L3 L1

12345

L2 L3

12345

X10

23456

Adr.: 06 Adr.: 11 Adr.: 12 Adr.: 13 Adr.: 14 Adr.: 15

22 2 2 2

34432

Adr.: 16

3359.5xx/.6xx, 3382.5xx/.6xx, 3383.5xx/.6xx, 3384.5xx/.6xx, 3385.5xx/.6xx

4 Assembly and connection

12 Rittal enclosure cooling unit

Fig. 15: Electrical wiring plan no. 3

Key

X1 Main terminal strip

X2 Master/slave connection

X3 Optional interface

K1 Relay collective fault 1

K2 Relay collective fault 2

Door Door limit switch (without door limit switch: terminal 1, 2

open)

4.7 Finalising assembly

4.7.1 Installing the filter media

The entire cooling unit condenser is covered with a dirt-

repelling, easy-to-clean RiNano coating. In many appli-

cations, therefore, the use of filter media is unnecessary,

particularly with dry dusts.

For dry, coarse dust and lint in the ambient air, we rec-

ommend installing an additional PU foam filter mat (avail-

able as an accessory) in the cooling unit. For air contain-

ing oil condensate, we recommend the use of metal fil-

ters (also available as an accessory). When used in

textile plants with heavy lint contamination, lint screens

should be used (available as an optional extra).

Pull the louvred air inlet grille off the enclosure.

Secure the filter mat in front of the condenser using the

supplied blind rivets.

Then push the louvred grille back onto the enclosure.

4.7.2 Fitting the cooling unit

Connect the connector to the rear of the display.

Place the louvred grille onto the unit at the front, and

press it down until you hear it snap into place.

Fig. 16: Connect the display and attach the louvred grille

4.7.3 Setting the filter mat monitor

Function of the filter mat monitor:

Dirt on the filter mat is automatically detected by meas-

uring the temperature difference in the external circuit of

the cooling unit (see section 6.1.6 "Programming over-

view"). As the level of filter mat soiling increases, the

temperature difference will increase. The setpoint value

3386.54x/.64x, 3387.54x/.64x

Note:

For technical data, refer to the rating plate.

cos φ = 1

Res. Load

I max. = 2 A

U max. = 250 V

I min. = 100 mA

U max. = 30 V

I max. = 2 A

Tab. 2: Relay contact data

Rittal enclosure cooling unit 13

5 Start-up

of the temperature difference in the external circuit

adapts automatically to the relevant operating points in

the performance diagrams. Hence there is no need to

readjust the setpoint value for different unit operating

points.

5 Start-up

Once all the assembly and installation work is com-

plete, switch on the power supply to the cooling unit.

The cooling unit starts running:

– The software version of the controller first appears for

approx. 2 seconds, then "ECO" to show Eco mode is

enabled. The internal enclosure temperature will then

appear in the 7-segment display.

You can now make your individual settings on the unit

e.g. set the temperature or assign the network identifier

etc. (refer to section 6 "Operation").

6 Operation

You can operate the cooling unit using the controller on

the front of the device (fig. 1, item 5).

6.1 Control using the e-Comfort controller

For unit types xxxx.500/.510/.540 and xxxx.600/.610/

.640.

Fig. 17: e-Comfort controller

Key

1 Programming button, also display of the set temperature

unit (degrees Celsius)

2Setbutton

3 Programming button, also display of the set temperature

unit (degrees Fahrenheit)

47-segmentdisplay

6.1.1 Properties

– Rated operating voltage:

–115Vor

–230Vor

– 400 V, 2-phase or

– 400/460 V, 3-phase

– Integral start-up delay and door limit switch function.

– Protective function to prevent icing.

– Monitoring of all motors (compressor, condenser fan,

evaporator fan).

– Phase monitoring for three-phase units.

– Master-slave function with a maximum of ten units.

One device functions as a master unit. Once the set

temperature is reached by one of the connected slave

devices or in the event of the door limit switch function,

the affected slave unit will report to the master unit that

switches all the other cooling units on or off as re-

quired.

– Switching hysteresis: adjustable within the range 2 –

10 K, preset to 5 K.

– Visualisation of the current internal enclosure temper-

ature and all error messages in the 7-segment display.

– Using an interface card (Model No. 3124.200), the unit

may be incorporated into higher-level remote monitor-

ing systems.

The cooling unit operates automatically, i.e. after switch-

ing on the power supply, the evaporator fan (see fig. 2)

will run and circulate the internal enclosure air.

The compressor and condenser fan are regulated by the

e-Comfort controller.

The e-Comfort controller has a 7-segment display

(fig. 17, item 4). After switching on the power supply, the

current software version initially appears on this display

for approx. 2 seconds together with the symbol to show

Eco mode is enabled, followed by a preset option (e.g.

t10) or the temperature.

In regular operation, the display shows both the temper-

ature (in degrees Celsius or Fahrenheit – users may

switch between the two) and any error messages.

The current internal enclosure temperature is usually dis-

played permanently. In the event of an error message,

this alternates with the temperature display.

The unit is programmed using buttons 1 – 3 (fig. 17). The

relevant parameters also appear in the display.

6.1.2 Eco mode

All Rittal TopTherm cooling units with e-Comfort control-

ler from firmware 3.2 have the energy-saving eco mode,

which is enabled in the delivered state.

The eco mode is used to save energy in the heat ex-

changer if there is no thermal load, or there is a low ther-

mal load in the enclosure (e.g. standby operation, no

production or weekend).

During this process the evaporator fan in the internal cir-

cuit is switched off as appropriate if the actual internal

enclosure temperature drops to 10 K below the speci-

fied setpoint temperature. To ensure the internal tem-

perature is reliably measured during this process, the fan

starts cyclically for 30 sec. every 10 minutes (see fig. 18).

If the internal temperature drops to a range 5 K below

the setpoint set again, the fan switches back to contin-

uous operation.

Note:

The oil must be collected in the compressor

in order to ensure effective lubrication and

cooling.

Do not operate the cooling unit for at least

30 minutes after assembling the equipment.

6 Operation

14 Rittal enclosure cooling unit

If required, eco mode can be disabled on the control dis-

play. For this purpose switch the parameter from 1 to 0

in the programming level (see tab. 3). The fan then runs

continuously.

Fig. 18: Eco mode

6.1.3 Launching test mode

The e-Comfort controller is equipped with a test function

whereby the cooling unit commences cooling operation

independently of the set temperature or door limit switch

function.

Simultaneously press buttons 1 and 2 (fig. 17) for at

least five seconds.

The cooling unit will commence operation.

Test mode is completed after approximately 5 minutes.

The unit switches off and changes to normal operation.

6.1.4 General information about programming

Using buttons 1, 2 and 3 (fig. 17) you can change

24 parameters within the preset ranges (min. value –

max. value).

Tables 3 and 4 show the parameters which can be al-

tered. Fig. 20 on page 16 shows which buttons must be

pressed.

In principle, the programming is identical for all editable

parameters.

To enter programming mode:

Press button 2 ("Set") for approx. 5 seconds.

The controller is now in programming mode. While in

programming mode, if you do not press any buttons for

approx. 30 seconds, the display will first flash, then the

controller will switch back to normal display mode. "Esc"

in the display indicates that any changes made have not

been saved.

Press the programming buttons (°C) or (°F) to

switch between the editable parameters (see tables 3

and 4).

Press button 2 ("Set") to select the displayed parame-

ter for editing.

The current value of this parameter is displayed.

Press one of the programming buttons (°C) or 

(°F).

"Cod" will appear in the display. In order to be able to

change a value, you must enter the authorisation code

"22".

Keep the programming button (°C) held down until

"22" appears.

Press button 2 ("Set") to confirm the code.

You can now alter the parameter within the preset limits.

Press one of the programming buttons (°C) or 

(°F) until the required value appears.

Press button 2 ("Set") to confirm the change.

You can now alter other parameters in the same way.

There is no need to re-enter the authorisation code "22".

To exit programming mode, press button 2 ("Set")

again for approximately five seconds.

"Acc" will appear in the display to indicate that

the changes have been saved. The display then switch-

es back to regular operation (internal enclosure temper-

ature).

You can also program the e-Comfort controller using a

diagnosis software package (Model No. 3159.100),

which is supplied with a connection cable to the PC. The

cable connector on the rear of the e-Comfort controller

display serves as an interface.

Note on switching hysteresis:

With a low hysteresis and short switching

cycles, there is a risk that cooling may not

be adequate or that only partial sections of

the enclosure are cooled. If the cooling unit

is oversized and compressor run times are

too long < 1 minute, the switching hystere-

sis to protect the cooling unit is automatical-

ly increased (see message "LH" in

section6.1.9 "Evaluating system messa-

ges").

Note on temperature settings:

With the e-Comfort controller, the tempera-

ture is preset at the factory to +35°C.

In order to save energy, and due to the risk

of increased condensation, do not set the

temperature lower than that actually neces-

sary.

Note on useful cooling power:

Interactive performance diagrams for calcu-

lating the useful cooling power may be

found at www.rittal.com.

Status

internal fan

Internal

temperature

Time

Setpoint

-5°C

Setpoint

-10°C

OFF

10 min.

30 sec.

10 min.

Rittal enclosure cooling unit 15

6 Operation

6.1.5 Editable parameters

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