SAUTER flexotron®400 - RDT410
Installation and wiring
P100012103
11
4.2.2
Inputs and outputs
All ground terminals are interconnected and also connected to G0.
Analogue inputs AI
The analogue inputs must refer to an ground terminal. AI1 and AI2 are for Ni1000
temperature sensors only. AI1 has a temperature range of 0…84°C. AI2 has a
temperature range of
-
30…+54°C. SPI is only intended for a Ni1000 setpoint device, the range is
0...40°C.
Digital inputs DI
The digital inputs must refer to DI+ on terminal 2. The digital inputs may only be
wired to voltage-free contacts. Any external voltage applied to a digital input may
harm the unit.
Universal input UI
The universal input can, depending on the choice of application, be made to act
as either an analogue input or as a digital input.
When used as an analogue input it is for Ni1000 temperature sensors. The input
then has a range of 0…+84°C
UI must refer to UI+ on terminal 4.
Analogue outputs
Analogue outputs must refer to a ground terminal or directly to G0.
If the RDT410 (24V supply model only) and actuators connected to it share
transformer, it is essential that the same transformer-pole is used as reference
for all the equipment. Failure to do so will prevent the equipment from
functioning as intended and may also lead to damages.
Digital outputs
The two digital outputs DO1 (terminal 15) and DO2 (terminal 14) are triac
controlled. The triacs are internally connected to G0. Each triac can handle 24 V
AC, 500 mA. The outputs cannot be used to drive DC relays.
When DO1 and DO2 are used for 3-point control DO1 will always be increase
signal (open valve) and DO2 always decrease signal (close valve)
The outputs should normally refer to GDO on terminal 16. GDO is internally
connected to LS and supplies 24 V AC.
In RDT410 GDO can deliver the necessary 2 x 300 mA.
In RDT410F301 however, the internal transformer’s capacity restricts the current
on GDO to approx. 165 mA.
