Connection Voltage Supply; Connection Of Sensor; Output Voltage 0; Input For Switch Over Setpoint 1 / Setpoint - Helios ETR Installation And Operating Specification

Installation and Operating Specification ETR

5.3 Connection Voltage supply

Connection Voltage supply at terminals: "+Ub" and "GND". Here, it
must be strictly observed that the mains voltage lies within the
allowable tolerance specifications ( Technical data and name-
plate affixed to the side).

5.4 Connection of sensor

Connection of temperature sensor for measuring actual value (not
in scope of delivery) to terminals "TF". It is possible to connect
Helios sensors of series "LT.." (KTY81-210) or PT1000 temper-
ature sensors. It must be paid attention to no polarity.
For a high interference immunity a capacitor must be connected
directly to the sensor (1 nF parallel). With Helios temperature
sensors type LT.. (KTY81-210) a capacitor is integrated.
Attention!
Never apply line voltage to analog inputs!
room-Thermistor
Type: LTR 40
Part.-No.: 1323
5.5 Output voltage 0 - 10 V
Connection to Terminals "A" - "GND" (I
It is not permissible to connect outputs of several devices to each
other!

5.6 Input for switch over Setpoint 1 / Setpoint 2

Via voltage at terminals "1" and "2" (10... 24 V DC) a switchover
between Setpoint 1 and Setpoint 2 is possible (note polarity
connection diagram).
L-BAL-E193-GB 1320
outside-thermistor
Type: LTA 40
Part.-No.: 1336
Part.-No.
9/20
Electrical installation
Air duct sensor
Type: LTK 40
Part.-No.: 1324
Technical data).
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