1
Controller for mixing group
Code: EK-HH1-TP
meric display and membrane keyboard
• Change of a subset of regulation parameters through
alphanumeric display and membrane keyboard
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-
REAEKHH1TP
Datasheet STEKHH1TP_EN
Operation
Regulation mode
Heating
- fixed point
- external compensation
- recalibration on the internal conditions
- recalibration on the return temperature
- external compensation and recalibration
Cooling
- fixed point
- external compensation
- recalibration on the thermohygrometric
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.
