9
5. Description of device function and setting
Information from regulator is available directly through LCD or you can read them with one of
next communication protocols ( Modbus RTU, Advantech-ADAM ).
5.1. Device setting from the manufacturer
If special setting was not required in the order, regulator is set from the manufacturer to the
following parameters:
communication protocol:
Modbus RTU
regulator address:
1
communication speed:
9600Bd, no parity, 2 stop bits
Value assigned to Relay1 and Relay2:
none
Password for setting through keys (PASS):
0000
LCD display:
on
value shown at first LCD line:
temperature, temperature / pressure
– by device type
value shown at second LCD line:
relative humidity / dew point temperature
temperature unit:
°C
pressure unit:
hPa
correction for altitude:
0 hPa
(absolute pressure)
computed value preset:
dew point
temperature
relay response for error:
stay unchanged at previous condition
signalization of binary inputs status:
LED diode lights if input contact is open
acoustic alarm:
off
5.2. Relay outputs
Regulator is equipped with two relay outputs. It is possible to assign any input or computed value
or “Far condition” (see chapter
at page 20) to each relay, to set comparing alarm limit, if the
relay may close if measured value is higher (Hi) or lower (Lo) than preset limit, delay for while must
be preset condition true before relay close its contact and hysteresis for return to open status. For
binary inputs: if it is preset to „HI“ then output relay is closed when input contact is opened, if it is
preset to „Lo“ then output relay is closed when input contact is closed. Each relay status is indicated
with LED diode and shown on LCD with corresponding symbols „
“ or „
“.
Terminal block for connecting the relays is equipped with terminals GND, which are connected
to the power supply of the device (see chapter “
Typical application wiring, connection of terminals
)
.
When you need to use relays to switching the voltage identical with the supply voltage of the device,
you can use jumpers J1 and J2 for interconnection the power supply of the device directly with the
common contacts of the relays.
This modification is used in devices with serial number higher
than 16981000
(the wiring diagram of the relay contacts for devices with serial number lower than
16981000 is given in the “
D”).
The devices are equipped with two relays that are not intended for direct switching power circuits
or mains voltage. If necessary, use suitable type of external relay (an example of wiring is given in
the “
).
5.3. Binary inputs
It is possible to read status of three galvanically not isolated binary inputs. It is possible to connect
“open contact” or external voltage. Auxiliary power U terminal can be used to supplying
of
external sensors and detectors.
Visualization of binary inputs is done by three LED diodes placed on
the left side from LCD. Green one represents input Binary 1, yellow input binary 2 and red input