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Note:
If an input is used for 0/4 to 20 mA measurement, reconfigure the corresponding input with
SMARTCONTROL Manager software. The default setting is the voltage measurement mode in this
case as well [see details in section on SMARTCONTROL Manager, AD converter].
7.3.
Temperature Inputs
The 8 temperature inputs, T0 through T7 (terminals 17 through 32) are used to record temperatures. Only Pt1000
sensors with 2-wire connection may be used. The measuring range is -50 to +170 °C.
Tip:
If greater accuracy is required, class 1/3 B sensors can be used.
The connector plugs are designated, and must be connected, as shown below (polarity is arbitrary):
Note:
Cable length and wire cross-section have a significant influence on measuring accuracy. Connect
each sensor separately with two wires each. Ground the sensor cable shield at one end to the
SMARTCONTROL housing.
►
An offset can be additionally entered to compensate for deviations by means of software
[see temperature inputs in SMARTCONTROL Manager manual].
►
Avoid cable lengths of greater than 20 meters, because the temperature coefficient of the
laid copper cable is otherwise no longer negligible.
7.4.
Digital Inputs (pulse / status / tariff / time synchronization)
The 8 digital inputs, IS0 through IS7 (terminals 33 through 48) are intended for use as meter or status inputs
(current, gas and water meters, door and window contacts etc.). Input S7 can also be used for time
synchronization.
7.4.1.
Setting the Operating Mode (passive/active) of the Digital Input
Pulse generators / status signals with their own power supply (active, with electrical isolation) or pulse generators /
status signals with open collector / floating contact output (passive, no electrical isolation, e.g. reed) can be
connected.
The signal type or operating mode is set with jumper series JP2, which determines electrical configuration. These
jumpers (red jumpers included in scope of delivery) are assigned to the respective digital inputs (from left to right:
IS0 to IS7), and are set to the passive operating mode at the factory.
