IE-SNC-T23(4)14-04
3
Device installation
Device is designed for wall mounting. There are two mounting holes at the sides of the case.
Don’t connect device while power supply voltage is on. Interconnection terminals for T2314
and T2414 devices are accessible after unscrewing four screws and removing the lid. Lace the cable
through a gland at the case wall. Connect the cable to terminals with respecting the signal polarity
(see figure). Terminals are self-clamping and can be opened by a suitable screwdriver.
For the opening, insert the screwdriver to smaller terminal hole and lever by him. Do not forget to
tighten glands and case lid with inserted packing after cables connecting. It is necessary
for warranting of protection IP54. Connect complementary female connector for T2314L
and T2414L transmitters in accordance with the table in Appendix B of this manual. Working
position is with communication cable entering from the top side.
Devices T2314 are supplied with connection cable equipped with connector for connection
to RS232 interface. For devices with RS485 output there is recommended to use shielded twisted
copper cable, maximal length 1200m. The cable must be located at indoor rooms. Nominal cable
impedance should be 100 Ω, loop resistance max. 240 Ω, cable capacity max. 65 pF/m. Outside
diameter of the cable for T2414 connection must be from 3 to 6.5 mm. Suitable cable is
e.g. SYKFY 2x2x0.5 mm
2
, where one wire pair serves for device powering and the other pair
for communication link. For devices T2314L and T2414L use cable with respect to female
connector parameters. Do NOT connect shielding at connector side.
The cable should be led in one line, i.e. NOT to „tree“ or „star“. Termination resistor should
be located at the end. For short distance other topology is allowed. Terminate the network by
a termination resistor. The value of the resistor is recommended about 120
. For short distance
termination resistor can be left out.
The cable should not be led in parallel along power cabling. Safety distance is up to 0.5 m,
otherwise undesirable induction of interference signals can appear.
Electrical system (wiring) may do only worker with required qualification by rules
in operation.
Info mode
If in doubt of setting of installed device, verification of its address is enabled even without
using computer. Power should be connected. Devices with RS232 interface have address always set
to one.
Unscrew device cover and shortly press button next to connection terminals (jumper should
be opened). Actual adjusted address of the device is displayed on LCD display at decimal base, for
HWg-Poseidon’s communication protocol there is shown number corresponding with ASCII
address code. Next press of button exits info mode and actual measured values are displayed.
Note: No measurement and communication is possible during info mode. If device stays in info
mode for longer than 15 s, device automatically returns to measuring cycle.
Setting of pressure correction for altitude
If there is necessary to read value of atmospheric pressure corrected with respect to altitude,
it is possible to set corresponding pressure offset for this altitude. It is possible to do it with Users
software. This value is then automatically added to measured pressure value. The resultant value
of pressure with added correction for altitude must be between 300 hPa and 1350 hPa (from 4.351
PSI to 19.580 PSI). Outside this range device sends value of Error 2!
