Inputs And Outputs; Analog And Digital Input; Digital Outputs - JUMO miroTRON Operating Manual

2 Description
In the case of minor control deviation (e.g. if the control loop is in a steady state during operation), oscil-
lation is forced around the setpoint value. In this respect, the setpoint value is definitely exceeded. The
controller automatically chooses between the two procedures depending on the extent of the control de-
viation:
Autotuning during the startup phase
x = actual value
S = switching line
NOTE!
The autotuning function is started and stopped using the keypad or by a digital signal.
It is not possible to start the autotuning function from manual mode.
Autotuning can be carried out as often as desired.
In the oscillation method, the output value limits Y1, Y2 are not active during the optimization for switched
outputs and solid state outputs. However, these are taken into account when determining the parame-
ters.
2.6

Inputs and outputs

2.6.1

Analog and digital input

The device is equipped with an analog input and maybe with a digital input.
The type of analog input has to be determined when ordering the device.
NOTE!
A device with an analog input for RTD temperature probes (Pt100, Pt1000) in three-wire circuit does not
have a digital input.
Analog input
The analog input provides the actual value for the thermostat or controller function.
NOTE!
A customer-specific linearization of the analog input can be configured in the setup program with a for-
mula or a table with max. 40 value pairs.
Digital input
The digital input is for the purpose of activating various different functions, such as setpoint changeover.
The digital input can be operated through closing and opening an external potential-free contact.
2.6.2

Digital outputs

The device is equipped with up to four digital outputs (relay outputs, logic output 0/14 V).
14
Autotuning during operation
w = setpoint value
T = start of autotuning