KELD KLTH43 Specification And Operating Instructions

• Dependent ON/OFF control
If rh8=ono and rh0=dEP, output 3 works as in Independent ON/OFF
control, but output 4 works as follows:
If ch3=dir, output 4 will connect when HS >= Sh1+Sh2+rh2 and will
disconnect when HS <= Sh1+Sh2.
Humidity
Sh1+Sh2+rh2
Sh1+Sh2
ch1
Output 4 ON
Time
If ch3=Inv, output 4 will connect when HS <= Sh1+Sh2-rh2 and will
disconnect when HS >= Sh1+Sh2.
ch1 is the minimum stop time.
Humidity
Sh1+Sh2
Sh1+Sh2-rh2
ch1
Output 4 ON
Time
• Neutral zone control
If rh8 = NEu output 3 connects when HS >= Sh1+rh3 and
disconnects when HS <= Sh1, while output 4 connects when Hs1
<= Sh1-rh3 and disconnects when HS >= Sh1.
Humidity
Sh1+rh3
Sh1
Sh1-rh3
Output 3 ON
Output 4 ON
Time
• Control with probe errors
If reading of humidity probe fails the output 3 works following 10
minutes cycles, with a percentage of connection time given by Ch4.
Output 4 is carried out in the same way with parameter Ch5.
• Humidity alarms
If HS >= Sh1+Ah1, the controller will indicate maximum humidity
alarm for (AHH) and the alarm will remain activated until HS <=
Sh1+Ah1-Ah0.
If HS <= Sh1-Ah2, the controller will activate minimum humidity
alarm for (ALH), and it will remain activated until HS >= Sh1-Ah2-
Ah0.
Program Ah3 to indicate the alarm check time between alarm
event and indication of an alarm event. The alarm is indicated by
a message on the display and activating the alarm output if
present (alarm can be silenced pressing UP+DOWN keys or
CLEAR in the IR remote control).
Humidity
Humidity
Sh1+Ah1 Sh1-Ah2
Sh1+Ah1-Ah0 Sh1-Ah2+Ah0
High Alarm ON Low Alarm ON
Electrónica Keld, S.L.
Pol.Ind. Empresarium. C/Lentisco 15
50720 - La Cartuja Baja, ZARAGOZA
Spain
• Probe options
If the probe is not placed in the exact point to control, use a
standard hygrometer to determine the offset and set it by Ph0.
Set Ph1 to select if the decimal point is shown or not in the
display.
Set Ph2 to set the probe type (0-1V, CRPH03 or 4-20mA).
If a 4-20mA probe is used, use Ph3 to set the humidity value
for 4mA and Ph4 to set the value for 20mA.

General parameters

H1,H2,H3 are general parameters that can be accessed from
both temperature and humidity parameters.
Setting H1 to yES the set points (St1,St2,Sh1,Sh2) cannot be
changed. To unblock this protection, press SET T or SET H for 8
seconds and introduce the code in the same way as is done when
entering parameters.
H2 sets the communication address for the controller.
H3 sets the access code to parameters.

Led indication and display messages

The four OUT leds indicate the of the four outputs (when the
correspondent led is ON the output is connected and when the
led is OFF the output is disconnected).
In normal operation, the left display will show the temperature
measured by probe 1 and the right display the relative
humidity. In order to display the temperature measured by
probe 2 press SET T + UP keys.
In case of alarm or error, the following messages can be
shown:
• Err = Memory reading error
• ErP = Error in the temperature probe 2
• AHt = High temperature alarm (probe 1)
• ALt = Low temperature alarm (probe 1)
• AHh = High humidity alarm
• ALh = Low humidity alarm
• ooo = Open Probe Error
• --- = Short Circuit Probe Error
Maintenance, cleaning and repair
After final installation of the unit, no routine maintenance is
required.
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.
Phone: +34 976 429 099
Fax:+34 976 593 532
E-mail: keld@keld.es
Web: http://www.keld.es
ETDT1076I_090319
E L E C T R Ó N I C A E L E C T R Ó N I C A
KLTH43 Temperature and Humidity Controller
Specification and Operating Instructions
Description
The KLTH43 is a temperature and humidity digital controller. The
temperature control can be ON-OFF, neutral zone and refrigeration
modes. It is possible to set a second temperature probe for
defrosting control. Humidity control can be ON-OFF and neutral
zone modes. The humidity probe can be 0-1V, 0-3V KLSH03 and 4-
20mA types.
Model references
The model reference is given by: KLTH43 - YZ
Each sufix can take the following values:
Y Supply Voltage 230=230VAC, 115=115VAC
Z Temp. Units C=ºC, F=ºF

Installation

NOTE: Unit must be mounted away from vibration, impacts, water
and corrosive gases.
• Cut hole in panel 131 x 101 mm (5.15 x 3.97 inches).
• Remove the rear cover to wire the unit.
• The wiring diagram is shown in the unit label.
• Apply silicone (or rubber gasket) around the perimeter of the hole
to prevent leakage.
• Insert the unit in the panel hole.
• Replace the rear cover.
• Place removable fitting clips from the back of the until it is secured
to the panel.
• Fit the clip in the panel and then press to fit the other side in the
unit.
Temperature Probe 1 (Sd1) in terminals 18 - 17
Temperature Probe 2 (Sd2) in terminals 19 - 17
Humidity Probe (SH) in terminals 20-21-17
• Note: DO NOT INSTALL PROBE CABLES NEAR POWER
CABLES.
Electrónica Keld, S.L.
Pol.Ind. Empresarium. C/Lentisco 15
50720 - La Cartuja Baja, ZARAGOZA
Spain
Wiring Diagram
OUT4 OUT3 OUT2 OUT1
RX TX GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
tº tº
SUPPLY
Sd1 Sd2

Technical Data

Supply voltages 115 VAC10%, 230 VAC10%
Supply powers 7VA (230V)
Storage temperature -20ºC to 80ºC (-4 to 176ºF)
Operating temperature 0ºC to 70ºC (32 to 158ºF)
Temperature probe PTC1000 (25ºC - 1000 Ohm)
Temperature probe range -50ºC to 150ºC (-58 to 302ºF)
Temperature accuracy Better than 0,5 % of full scale
Temperature resolution 0.1º (3 digits)
Humidity probe 0-1V, 0-3V KLSH03 4-20mA ,
Humidity probe range 0 to 100% RH
Humidity accuracy Better than 5 % of full scale
Humidity resolution 1% (3 digits)
Displays 3-digit and sign (x2)
Outputs SPDT relay 250Vac 8A RL
Dimensions 134x105x61mm (5.3x4.1x2.4 in)
Front Protection IP65
Phone: +34 976 429 099
Fax:+34 976 593 532
E-mail: keld@keld.es
Web: http://www.keld.es
ETDT1076I_090319
IN VCC
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