KELD KLT11 series, KLT11-D Specification And Operating Instructions

Specification and Operating Instructions

KLT11-D Temperature Digital Controller

Description

Installation

NOTE: Unit must be mounted away from vibration, impacts,
water and corrosive gases.

Cut hole in panel 2.80 x 1.14 inches)

Apply silicone (or rubber gasket) around the perimeter of

the hole to prevent leakage.

Insert unit into hole of panel.
Slide removable fitting clips onto unit from the back until

secure to panel.

Wiring diagram is displayed on the top of the unit

NOTE: DO NOT INSTALL PROBE CABLE NEAR POWER
CABLES.

The KLT11 is designed for many heating and cooling
applications. It has an input for temperature probe type PTC
or NTC The probe temperature is
displayed on the bright 3-digit display. The user is able to
program 16 different parameters including set point,
hysteresis, cycle time and ambient probe adjustment using
the silicone front keypad. The KLKey input allows an easy
programming of the parameters. The unit features error
warning and password protection. Select between red,
green or blue display color, temperature display in ºC or ºF
and 115Vac, 230Vac, 24Vac/dc or 12Vac/dc power supplies.

The model reference is given by: KLT11 - DWXYZ
Where each sufix can take the following values:

==
X Display Color R=Red, G=Green, B=Blue
Y Supply Voltage 110=115Vac, 230=230Vac

24=24Vac/dc, 12=12Vac/dc

Z Units C=ºC, F=ºF

•

•

•

•

•

(selectable by parameter).

Model references

W Output Null 16A(1HP), 2 20A(2HP)

71 x 29 mm (

Technical Data

Supply voltages

115Vac±10%, 230Vac±10%, 24Vac/dc±10%, 12Vac/dc±10%

Supply powers

4VA (230V/115V) 1,5VA(24V /12V)

1% of full scale

0,1º (3 digits)

Display

3-digit and sign (red, green or blue)

Output

1HP Model SPDT Relay Resistive load 16A

1HP 240Vac -- 10FLA, 60LRA 240Vac

2HP Model SPST Relay Resistive load 20A

2HP 240Vac -- 12FLA, 72LRA 240Vac

Dimensions

Front 77 x 36 mm Depth 62 mm (3.03 x 1.42 x 2.44 inch)

Front Protection IP64

Storage temperature

-20ºC to 80ºC (-4 to 176ºF)

Operating temperature

0ºC to 70ºC (32 to 158ºF)

Probe range

PTC -50ºC to 150ºC (-58 to 302ºF)
NTC -50ºC to 110ºC (-58 to 230ºF)

Accuracy

Better than

Resolution

Probe Input (Selectable by parameter)

PTC1000 probes (25ºC - 1000 Ohm) / NTC

KLKey Input

For an quick programming of all parameters

Wiring Diagram

1 2

7 8 9 1011

SUPPLY

POWER

Probe input

OUTPUT

tº

NC COM NO

1 2

7 8 9 10

SUPPLY

POWER

Probe input

OUTPUT

tº

NO COM

1HP Model

2HP Model

ELECTRONICAELECTRONICA

ETDT1700I_110207

Electrónica Keld, S.L. Phone: [phone]
Pol.Ind. Empresarium. C/Lentisco, 15 Fax:[phone]
50720 - La Cartuja Baja, ZARAGOZA E-mail: [e-mail]
Spain Web: http://www.keld.es

List of p

Degrees 1 to 20
r1 Degrees -58 to r2
r2 Higher value for SP Degrees r1 to 302
d0 Cooling or heating control Option Ht/Co
d2 Defrosting duration Minutes 0 to 59
d8 Defrosting interval time Hours 0 to 24
c0 Minimum stopping time Minutes 0 to 59
c1 Cool cycle duration Hours 0 to 24
c2 ON time of fault cycle Minutes 0 to 999
c3 OFF time of fault cycle Minutes 0 to 999
P1 Ambient probe adjustment Degrees -10 to 10
P4 Decimal point Option no/yes
H5 Access code to parameters Numeric 0 to 255
H6 Probe type Option Ptc/ntc
t0 Maximum displayed temp. Degrees -58 to 302

r1 =
r2 = Higher value for SP

Cooling or heating control

d2 = Defrosting duration (if d2=0 no defrosting is performed)
d8 = A defrosting cycle is performed every d8 hours (if d8=0

no periodic defrosting is performed)

c0 = Minimum stopping time of the load
c1 = Cool cycle duration
c2 = ON time of fault cycle, when ambient probe is broken
c3 = OFF time of fault cycle, when ambient probe is broken
P1= Ambient probe adjustment. If the probe is not placed in

the exact point to control use a standard thermometer to
offset the measured temperature.
P4= Decimal point only in visualization of the probe.
The parameters are always decimal.

H5 = Access code to parameters (it is set to 00 from factory)
H6 = Probe Model Ptc or Ntc
t0 = Maximum temperature displayed during defrosting and

during the next hour to defrosting.

Parameter programming

arameters

Description Units Range

SP Set Point Degrees r1 to r2
r0

Parameter descriptions

Differential or hysteresis
Lower value for SP

SP = Set point. Temperature we wish to regulate the machine
(variable from r1 to r2)
r0 = Differential or hysteresis

Lower value for SP

d0 =
If d0 = Ht and TS is the temperature of ambient probe:

If TS >= SP the load is disconnected
If TS <= SP-r0 the load is connected

if d0=Co then:

If TS <= SP the load is disconnected
If TS >= SP+r0 the load is connected

Set Point (SP) is the only parameter the user can
access without code protection.

•Press SET. SP text will appear on the display.

•Press SET again. The real value is shown on the display.

•The value can be modified with the UP and DOWN arrows.

•Press SET to enter any new values.

•Press SET and DOWN at the same time to quit
programming or wait one minute and the display will
automatically exit programming mode.

Access to all code protected parameters.

•Press SET for 8 seconds. The access code value 0 is shown
on the display (unit comes with code set at 0 from factory).

• With the UP and DOWN arrows, code can be set to user
needs.

•Press SET to enter the code. If code correct, the first
parameter label is shown on the display (SP).

• Move to the desired parameter with the UP and DOWN
Keys.

•Press SET to view the value on the display.

• The value can be modified with the UP and DOWN arrows.

•Press SET to enter the value and exit.

• Repeat until all necessary parameters are modified.

•Press SET and DOWN at the same time to quit
programming or wait one minute and the display will
automatically exit programming mode.

* The keyboard code can be reset to ZERO by turning off the
controller and turning it on again while keeping the SET
pressed.

Holding the UP arrow pressed for 8 seconds the defrosting is
activated. Repeating this operation the defrosting is
stopped. If a cool cycle is activated the defrosting is disabled.

Holding the DOWN arrow pressed for 8 seconds a
continuous cool cycle is activated. Repeating this operation
the cool cycle is stopped. If defrosting is activated cool cycle
is disabled.

The led OUT indicates if the load is connected or not. If a
continuos cool cycle is being performed the led flashes
(90% ON 10% OFF). If the control is waiting the stopping
time c0 to start a cool cycle the led flashes (10% ON 90%
OFF).
The led DEF indicates if the control is performing defrosting.
In normal operation, the probe temperature will be shown on
the display. In case of alarm or error, the following messages
can be shown:

• Er = Memory Error

• oo = Open Probe Error

• -- = Short Circuit Probe Error

Clean the surface of the display controller with a soft and
damp cloth. Never use abrasive detergents, petrol, alcohol
or solvents.
All repairs must be made by authorised personnel.

Activating/deactivating defrosting

Activating/deactivating cool cycle

Default working

In case of probe error, the control performs a continuous
regulation, c2 minutes load connected - c3 minutes load
disconnected.
In case of memory error, the control performs a continuous
regulation, 5 minutes load connected - 5 minutes load
disconnected.

Led indication and display messages

Maintenance, cleaning and repair

After final installation of the unit, no routine maintenance is
required.

ETDT1700I_110207

Electrónica Keld, S.L. Phone: [phone]
Pol.Ind. Empresarium. C/Lentisco, 15 Fax:[phone]
50720 - La Cartuja Baja, ZARAGOZA E-mail: [e-mail]
Spain Web: http://www.keld.es