elsner elektronik KNX I4-ERD Installation And Adjustment - Page 4

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1.

Description

The KNX I4-ERD evaluation unit monitors ground temperature and humidity.
You can control an automatic watering system objectively with the data. Up to
four TH-ERD sensors can be connected to the evaluation unit. The two KNX I4-ERD
threshold-value dependent switching outputs for humidity and temperature are avail-
able for each sensor channel.
KNX I4-ERD evaluation unit receives external readings via the bus and reconciles
these to composite values with proprietary data. In this way, you can work with an
overall temperature or an overall humidity reading for each channel.
Functions:
•
Reception of temperature and humidity information from up to four
external sensors
•
Composite readings for each sensor channel variable from proprietary
measured and external readings (percentage variable)
•
2 switched outputs per channel for temperature and humidity, with
adjustable thresholds (thresholds are set optionally by parameters or via
communication objects)
Configuration is made using the KNX software ETS. The product file can be down-
loaded from the Elsner Elektronik website on www.elsner-elektronik.de in the "Ser-
vice" menu.

1.1. Deliverables

•
Evaluation unit in series installation housing
You will additionally require (not included in scope of delivery):
•
TH-ERD sensors (no. 70312), 1-4 units

1.2. Technical data

Housing
Colour
Assembly
Protection category
Dimensions
Weight
Ambient temperature
Ambient humidity
Operating voltage
Power consumption
Power
KNX I4-ERD evaluation unit • Status: 15.03.2016 • Technical Changes and Errors reserved.
3
Plastic
White
Series installation on mounting rail
IP 20
approx. 107 x 88 x 60 (W x H x D, mm), 6 modules
approx. 300 g
Operation -20...+70°C, storage -55...+90°C
max. 95% RH, avoid condensation
230V AC, 50 Hz
approx. 1.6 W without sensors,
approx. 2.8 W with 4 sensors
on bus: 10 mA
Description