Ekinex EK-HH1-TP Manuel

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Controller for mixing group

Code: EK-HH1-TP

KNX device operating as a controller for mixing group.

Impiego in impianti di automazione di case ed edifici a

standard KNX.

Description

ekinex

EK-HH1-TP allows to control a mixing group for

conveying fluid in heating and/or cooling applications for

building. The device controls the opening / closing of a

servomotor for mixing valve and starts / stops the circu-

lating pump of the hydraulic circuit. The device allows the

acquisition of the delivery and return temperatures of the

conveying fluid and the external air temperature, depen-

ding on the choosen regulation mode. It can be used

a 3-point floating servomotor points or one with 0...10V

input signal. The seasonal changeover (heating / cooling)

may happen from the bus, through a binary input (con-

figured for the purpose) or manually on the membrane

keyboard. The device integrates a KNX bus communica-

tion module and is realized for mounting on a standard

35 mm rail. The device is supplied by the KNX bus and

requires an additional 230 Vac power supply to operate.

Functional characteristics

• Control of a servomotor for mixing valve (3-point floa-

ting actuator or actuator with 0...10 V control signal)

• Start / stop of a circulating pump

• Regulation mode can be set separately for heating

and cooling

• 2 relay outputs for switching / controlling addtional

functions

• 3 inputs for passive temperature sensors (NTC 10 kΩ

at 25°C) for acquisition of conveying fluid delivery and

• return temperatures and external air temperature

• 2 configurable inputs as analogic for passive tempera-

ture sensor (NTC sensor 10 kΩ at 25°C) or digital (e.g.

for condensation sensor or flow request contact)

• Connection of 230 Vac or 24 Vac external power sup-

ply for 3 point floating servomotor

• Two logical functions with 16 objects each

• Overtemperature (heating) and undertemperature

(cooling) alarm management

• Condensation sensor alarm management

• Monitoring of operating parameters through alphanu-

Datasheet STEKHH1TP_EN

meric display and membrane keyboard

• Change of a subset of regulation parameters through

alphanumeric display and membrane keyboard

Operation

Regulation mode

- fixed point

- external compensation

Heating

- recalibration on the internal conditions

- recalibration on the return temperature

- external compensation and recalibration

- fixed point

- external compensation

- recalibration on the thermohygrometric

Cooling

internal conditions

- external compensation and recalibration on

the thermohygrometric internal conditions

Other characteristics

• Housing in plastic material

• Mounting on 35 mm rail (according to EN 60715)

• Protection degree IP20 (installed device)

• Safety class II

• Weight 380 g

• Modular device 8 MU (1 MU = 18 mm)

• Dimensions 144 x 90 x 70 mm (WxHxD)

Technical data

Power supply

• 30 Vdc by KNX bus (electronics) and 230 Vac 50/60

Hz auxiliary (loads)

• Current consumption from bus < 11 mA

• Power consumption from bus 300 mW

Outputs

• Control of a 3 point floating servomotor (CLOSE /

COM / OPEN): 1 A, 250 Vac

• Control of a servomotor with 0...10 V signal (AO1):

connection of high impedance input

• Load control for additional functions (DO1, DO2,

DO3): 10(5) A, 250 Vac

Inputs

• Analogic (IN1, IN2, IN3): exclusively for connection of

NTC temperature sensors 10 kΩ at 25°C

• Configurable (IN4, IN5) as analogic (exclusively for

NTC temperature sensors 10 kΩ at 25°C) or digital

(potential free)

Environmental conditions

• Operating temperature: 0 ... + 55°C

• Storage temperature: - 25 ... + 55°C

• Transport temperature: - 25 ... + 70°C

• Relative humidity: 95% not condensing)

Control, display and connection elements

The device is provided with a programming pushbutton

and LED, a terminal for connecting the KNX bus line, a

backlighted display, 4 pushbuttons for menu scrolling,

and screw terminals for connecting inputs, outputs and

230 Vac power supply.