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46.102/1

 

flexotron

®

 300 

 Sauter 

Components 

RDT 300: Electronic controller for ventilation and air-conditioning 

How energy efficiency is improved 

Top quality algorithm for generation of c/o signal for changeover between heating and cooling mode, 
and therefore ensuring energy saving operation of the system. 

Areas of application 

Weather-compensated flow temperature control in 2- and 4-pipe systems for heating/cooling. Activa-
tion of intelligent unitary controllers. 

Features 

 

Clearly-laid-out operating unit with large LCD display and generously proportioned keypad 

 

6 controller models 

 

Plug-in memory for copying and documenting system parameters 

 

Fast commissioning thanks to preset parameters 

 

Room user panel with display available as accessory 

 

Weekly and annual switching program 

 

Automatic summertime/wintertime changeover 

 

Sealable sliding switch for selection of operating mode 

Technical description 

 

Housing 144 x 96 mm made of flame-retardant, pure white thermoplastic (RAL 9010)  

 

4 universal inputs and 2 analogue inputs 

 

2 independent PI controllers  

 

3 continuous outputs and 6 relay outputs 

 

Reset, sequencing and limiting functions, as well as alarm and time functions 

 

Suitable for fitting on walls, in panels and on top-hat rails 

 

Electrical connection in base with screw terminals for wires up to 2.5 mm² 

 

 

 
 

PI

Y06366

 

 

Type 

1)

 

Setting range 

°C 

Control modes 

Power supply 

Weight 

kg 

 

RDT 300 F001 

–30...150 

P, PI 

230 V~ 

0,67 

 

 

 

Ranges (depend-
ing on transmitter) 

Temperature

°C or K 

Percentage 

Rel. humidity 

%rh 

Abs. humidity

g/kg 

Enthalpy

kJ/kg 

No unit of 

measurement 

Setpoint Xs –30...150 

°C 

0...100 

0...100 0.0...20 0...100 –4999...4999 

P-band 0.1...180 

0.1...200 0.1...100  0.1...100 0.1...100 10...4999 

 

 

4 universal inputs 

3)

 

 

2 analogue inputs 

 

Temperature 

Ni1000 (DIN 43760) 

2

×

 temperature 

2) 3)

 

Ni1000 (DIN 43760) 

Voltage 

0(2)...10 V; R

i

 = 100 k

 

 

 

 

0...1 V, R

i

 = 500 k

 

Outputs 

3)

 

 

Current 

0(4)...20 mA, R

i

 = 50 

 

3 continuous 

0(2)...10 V, load > 5 k

 

Potentiometer 

2 k

 (min.1 k

4 relays 

5(2) A, 250 V~ 

 

 

2 relays 

5(2) A, 24/250 V~ 

 

 

Power supply  

230 V~  +10/–15%; 50...60 Hz 

Degree of protection 

IP 30 (EN 60529) 

Power consumption 

5 VA 

Protection class F001    230V  II (IEC 60730) 

P-band X

p

 0,1....180 

 

 

Integral action time T

n

 0....9990 s 

Wiring diagram 

A09432

 

  

Dimension 

drawing 

M368900

 

Cycle time 

1 s 

Fitting instructions 

MV 505711 

Permissible ambient temp.  0...45 °C 

Operating instructions 

 

Ambient humidity 

5...80 %rh 

For end users 

7000927 (Part 1) 

 

non-condensing 

Commissioning 

7000928 (Part 2) 

 

 

Accessories

 

 

RDB 300 

Remote-control unit see Section 46 

 

0313516 . . . 

Additional operating instructions (7000927 and 7000928) 
German 001, French 002, English 003, Italian 004. 

 

0369746 001 

Cover plate for the whole front; of transparent thermoplastic; sealable 

 

0226187 002

Plug-in dummy for memory slot 

 

0226187 003

Plug-in memory for 

flexotron

 

 

 

 

 

*) 

Dimension drawing or wiring diagram are available under the same number 

 

 

 

1) 

Since several languages are available, please order the operating instructions as an accessory. 

2) 

Can also be used as a binary input (gold contacts). 

3) 

Protected against short-circuiting and excess voltage up to 24 V a.c. Current input for max 70 mA. 

 

7146102003  04 

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