Danfoss 102 Bedienungsanleitung PDF herunterladen (Seite 9)

EKC 102 Manual RS8DY302 © Danfoss 07-2005 9

Defrost method

Here you set whether defrost is to be accomplished with

electricity, natural or "non".

During defrost the defrost relay will be cut in.

d01

Defrost stop temperature

The defrost is stopped at a given temperature which is

measured with a sensor (the sensor is deﬁned in d10).

The temperature value is set.

d02

Interval between defrost starts

The function is zeroset and will start the timer function at

each defrost start. When the time has expired the func

tion will start a defrost.

The function is used as a simple defrost start, or it may be

used as a safeguard if the normal signal fails to appear.

When there is defrost with clock function on the DI input

the interval time must be set for a somewhat longer

period of time than the planned one, as the interval time

will otherwise start a defrost which a little later will be

followed by the planned one.

The interval time is not active when set to 0.

d03

Max. defrost duration

This setting is a safety time so that the defrost will be

stopped if there has not already been a stop based on

temperature.

d04

Time staggering for defrost cutins during start-up

The function is only relevant if you have several refrigera

tion appliances or groups where you want the defrost

to be staggered in relation to one another. The function

is furthermore only relevant if you have chosen defrost

with interval start (d03).

The function delays the interval time d03 by the set num

ber of minutes, but it only does it once, and this at the

very ﬁrst defrost taking place when voltage is connected

to the controller.

The function will be active after each and every power

failure.

d05

Defrost sensor

Here you deﬁne the defrost sensor.

0: None, defrost is based on time

EKC 102A: 1=Sair

EKC 102B: 1=Sair.

EKC 102C: 1=S5. 2=Sair

d10

Defrost during start-up

Here you can set if the controller is to start with a defrost

if the power has been cut.

d13

Defrost on demand – aggregate refrigeration time

Set here is the refrigeration time allowed without de

frosts. If the time is passed, a defrost will be started.

With setting = 0 the function is cut out.

d18

Defrost on demand – S5 temperature

The controller will follow the eﬀectivity of the evaporator,

and via internal calculations and measurements of the

S5 temperature it will be able to start a defrost when

the variation of the S5 temperature becomes larger than

required.

Here you set how large a slide of the S5 temperature can

be allowed. When the value is passed, a defrost will start.

The function can only be used in 1:1 systems when the

evaporating temperature will become lower to ensure

that the air temperature will be maintained. In central

systems the function must be cut out.

With setting = 20 the function is cut out

d19

If you wish to see the temperature at the S5 sensor, push

the controller’s lowermost button.

If you wish to start an extra defrost, push the controller’s

lowermost button for four seconds.

You can stop an ongoing defrost in the same way

The LED on the controller’s front will indicate whether a

defrost is going on.

Miscellaneous

Delay of output signal after start-up

After start-up or a power failure the controller’s functions

can be delayed so that overloading of the electricity sup

ply network is avoided.

Here you can set the time delay.

o01

Digital input

signal - DI

The controller has a digital input which can be used for

one of the following functions:

Oﬀ: The input is not used

1) Door function. When the input is open it signals that

the door is open. When the time setting in “A04” is

passed, an alarm will be given

2) Defrost. The function is started with a pulse pressure

of at least two seconds’ duration. The controller will

then start a defrost cycle. If the signal is to be received

by several controllers it is important that ALL connec

tions are mounted the same way (DI to DI and GND to

GND).

3) Main switch. Regulation is carried out when the input

is short-circuited, and regulation is stopped when the

input is put in pos. OFF.

4) Night operation. When the input is short-circuited,

there will be regulation for night operation.

o02

Access code 1 (Access to all settings)

If the settings in the controller are to be protected with

an access code you can set a numerical value between 0

and 100. If not, you can cancel the function with setting

0. (99 will always give you access).

o05

Sensor type

Normally a Pt 1000 sensor with great signal accuracy is

used. But you can also use a sensor with another signal

accuracy. That may either be a PTC sensor (1000 ohm at

25°C) or an NTC sensor (5000 Ohm at 25°C).

All the mounted sensors must be of the same type.

o06

Function options

The thermostat’s function is deﬁned, as follows:

rE: Refrigeration. The relay cuts in when lower tempera

tures are required.

HE: Heating. The relay cuts in when higher temperatures

are required (remember to cancel defrost functions

and compressor functions). With this function the

thermostat’s diﬀerential will lie below the setpoint

(the relay will cut in at setpoint minus diﬀerential).

o07

Display step

Yes: Gives steps of 0.5°

No: Gives steps of 0.1°

o15

Access code 2 (Access to adjustments)

There is access to adjustments of values, but not to con

ﬁguration settings. If the settings in the controller are to

be protected with an access code you can set a numeri

cal value between 0 and 100. If not, you can cancel the

function with setting 0. If the function is used, access

code 1 (o05)

must also be used.

o64

Copy the controller’s present settings

With this function the controller’s settings can be trans

ferred to a programming key. The key can contain up to

25 diﬀerent sets. Select a number. All settings except for

Application (o61) and Address (o03) will be copied. When

copying has started the display returns to o65. After two

seconds you can move into the menu again and check

whether the copying was satisfactory.

Showing of a negative ﬁgure spells problems. See the

signiﬁcance in the Fault Message section.

o65

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