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INSTALLATION AND USER INSTRUCTIONS FOR THE:

Digital, 12 V, two-relay, panel mounted thermostat

for Pt 100 probes, up to 600ºC

AKO-14721

GENERAL DESCRIPTION:

Panel-mounted electronic thermostat, suitable for display, control and regulation of heat or cold genera-

tors.

VERSION:

MODEL

FUNCTION

MOUNTING

RELAYS

1: 8A cos ϕ =1 (SPDT)

AKO-14721 Thermostat

Panel-mounted

2: 8A cos ϕ =1 (SPDT)

TECHNICAL SPECIFICATIONS:

Temperature range: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50ºC to 600ºC

Pt 100 probe entry: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ref. AKO-15585, AKO-71726, AKO-71727

Controller accuracy: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ambient working temperature:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5ºC to 50ºC

Ambient storage temperature: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30ºC to 70ºC

-with independent mounting

-with characteristic of automatic operation action, Type 1.B

Control device classification:

-to be used in clean situation

INSTALLATION:

Thermostat:

The thermostat must be installed in a place away from vibrations, water and corrosive gas and where the

ambient temperature is within the range in the technical specifications.

For protection level IP65, the joint between the device and the surrounding of the panel space where it is

installed must be properly made.

Probe:

For correct readings, the probe must be installed in a place free of thermal

effects other than the temperature to be measured or controlled.

This diagram shows how the probe must be connected:

Connections:

Connect plugging terminals according to the rating plate diagram.

The probe and its corresponding cable should NEVER be installed in ducting along with mains, control

or power supply wiring, probe cables

max.

can be extended and no deviation

18 mm

will appear.

Fastening:

To fix the unit, place the fasteners 1

over the sliders 2 as shown in the figu-

re. Move the fasteners in the direction

of the arrow. By pressing tab 3, the

fasteners may be moved in the oppo-

site direction to the arrow.

61,5

FRONT PANELS FUNCTIONS:

LED PR

Functions:

UP key

LED 1

During programming, increases

LED 2

the figure being displayed.

DOWN key

During programming, lowers

the figure being displayed.

Holding it down for 5 seconds brings up the temperature adjustment menu.

Held down simultaneously for 10 seconds brings up the programming menu.

Held down simultaneously enters the new value.

Indicator LEDs:

LED 1

constant: Shows relay 1 is on.

flashing: Means relay 1 should be on according to the temperature detected by the probe,

but is not, owing to a programming condition.

LED 2

constant: Shows relay 2 is on.

flashing: Means relay 2 should be on according to the temperature detected by the probe,

but is not, owing to a programming condition.

LED PR

flashing: Programming set point or parameters.

TEMPERATURE SET POINT:

The default (factory) setting for

SET POINTS 1 and 2 are 0ºC

5 Sec.

SELECTION

TEMPERATURE

PRESENT

DISPLAY

SETTING

SP1= Set Point for R1

SP2= Set Point for R2

PRESENT

SETTING

- Hold the

key down for 5 seconds. This opens the SP1 or SP2 setting menu (the PR led will flash).

- Press the

PUBLICACIÓN

- Press the

the temperature again and the PR led stops flashing.

1472H100

NOTE: If no key is pressed for 30 seconds during any of these steps, the controller automatically returns

Edición 02

to temperature display, neither of the SET POINTS being changed.

RELAY CONTROL AND OPERATING MODES

P00=0 ON-OFF Switching

POWER SUPPLY

RELAY 1

12V ,

15%, 173 mA

OFF

SP1

Temp.

OFF

0,5ºC

RELAY 2

OFF

SP2

Temp.

OFF

P00=1 Neutral Zone

10 11 12

Pt100

PROGRAMMING:

Parameters should only be programmed or chenged by personnel familiar with the operation of the

apparatus and its possibilities where applied.

Programming parameters:

Level 1:

-Hold the

keys down simultaneously for 10 seconds. The PR led will flash and the first parame-

PANEL CUT-OUT

ter, "P00", will be shown on the display.

-Press the

-When the final parameter EP is on the display, press the

70,5

return to the temperature display and the PR led will stop flashing.

Level 2:

UP key

-To see the current value of any parameter, find the one you want and press the

ously. When it is on display, you can change it with the

-Press the

keys simultaneously to set the new value. When you do this, the programming will return

to level 1 (parameters).

PRG

ºC

NOTE: If no key is pressed for 30 seconds during any of these steps, the controller automatically returns

SET

to temperature display, none of the parameter values being changed.

DOWN key

TEMPERATURE

INDICATION

NEW

SETTING

NEW

SETTING

key to select SET POINT 1 or SET POINT 2.

keys simultaneously to show the setting you want to change.

keys to change the SET POINT to the figure you want.

keys simultaneously to enter the new figure. When you do this, the display shows

COLD operation P01=0

HEAT operation P01=1

C11>0

C11<0

OFF

SP1 + C11

SP1 - C11

SP1

SP1 + C11

SP1 - C11

Temp.

OFF

COLD operation P02=0

HEAT operation P02=1

C12>0

C12<0

C12>0

OFF

SP2 + C12

SP2 - C12

SP2

SP2 + C12

SP2 - C12

Temp.

OFF

RELAY 1

OFF

RELAY 2

OFF

SP1 - C15

SP1

SP1 + C15

key to change to the next parameter or previous parameter, respectively.

keys simultaneously, the controller will

keys.

LEVEL 1

LEVEL 2

PARAMETERS

VALUES

10 Sec.

CURRENT VALUE

NEW VALUE

PROGRAMMING

EXIT

DESCRIPTION OF PARAMETERS:

For Set Point programming, see TEMPERATURE SET POINT.

The figures in the DEF column are the factory settings.

PARAMETER

P00

Operating mode

Selection 0= ON-OFF Switching.

See operating modes.

Set points can be programmed separately for each relay.

Selection 1 = neutral zone.

See operating modes.

P01

Operation (cold/heat) of relay 1

Selection 0 = Cold

Selection 1 = Heat

C11<0

P02

Operation (cold/heat) of relay 2

Selection 0 = Cold

Selection 1 = Heat

P07

Resolution for temperature display.

SP1

0=0,1ºC between -50,0 and +99,9ºC rest of the range 1ºC

Temp.

1= 1ºC for the complete range.

OFF

Return to original parameters

1 sets all parameters in the device to the values in the DEF. VALUE column of

this table, then exits programming immediately.

C12<0

Probe calibration (offset)

Increases or decreases the correction to the temperature detected by the ther-

mostat in order to adjust the probe to real temperature.

C11

R1 Differential

SP2

Increases or decreases the temperature from that indicated by SET POINT 1 (SP1)

for R1 to be switched on.

Temp.

See relay 1 operating in ON-OFF switching mode.

OFF

C12

R2 Differential

Increase or decreases the temperature from that indicated by SET POINT 2 (SP2)

for R2 to be switched on.

See relay 2 operating in ON-OFF switching mode.

Neutral zone value

C15

Increases/decreases the temperature above or below SET POINT 1 for relays R1

and R2 to act.

See Neutral Zone operating.

C21

Maximum limit for R1 SET POINT

Relay 1's SET POINT cannot be established above this figure, the alarm AH being

produced if the temperature is above the value of C21 and C22.

C22

Maximum limit for R2 SET POINT

Relay 2's SET POINT cannot be established above this figure, the alarm AH being

produced if the temperature is above the value of C21 and C22.

C31

Minimum limit for R1 SET POINT

Relay 1's SET POINT cannot be established below this figure, the alarm AL being

produced if the temperature is less than the value of C21 and C22.

C32

Minimum limit for R2 SET POINT

Relay 2's SET POINT cannot be established below this figure, the alarm AL being

produced if the temperature is less than the value of C21 and C22.

C51

Relay R1 Triggering Delay

Delay for R1 being triggered after the temperature commands its activation.

C52

Relay R2 Triggering Delay

Delay for R2 being triggered after the temperature commands its activation.

C61

R1 status when the probe has failed

0=off

1=on

keys simultane-

C62

R2 status when the probe has failed

0=off

1=on

Exit Programming

OPERATING MESSAGES:

DISPLAY

STATE

Steady

Flashing with

temperature

Flashing with

temperature

Steady

MAINTENANCE:

Clean the surface of the controller with a smooth cloth, soap and water. Do not use abrasive detergents,

petrol, alcohol or solvents.

WARNINGS:

Using this unit without heeding the manufacturer's instructions may change its safety requirements.

AKO Electromecànica S.A.L. Apartado de Correos, 5. 08800 Vilanova i la Geltrú (Spain)

351472100 Rev. 01 2000

D.L.: B-33.685-00

DEF.

RANGE

DESCRIPTION

VALUE

MIN.

MAX.

-20ºC

20ºC

0ºC

-650ºC +650ºC

2ºC

-650ºC +650ºC

2ºC

0ºC

325ºC

2ºC

xxxºC

600ºC

xxxºC

600ºC

-50ºC

xxxºC

-50ºC

xxxºC

-50ºC

0 min. 99 min.

0 min.

0 min. 99 min. 0 min.

DESCRIPTION

Probe short circuited, circuit open >614ºC or <-60.6ºC

Temperature above the maximum limit values set in C21 and C22.

Temperature below the minimum limit values set in C31 and C32.

Memory failure