dixell XH50P, XH55P Installing And Operating Insructions

1592030000 xh50_55p r1.2 gb 2011.06.28.doc

XH50-55P 1/5

XH50P - XH55P

Temperature/relative humidity probe with RS485 serial line

1. GENERAL WARNINGS ........... ................. ............... ................ ................ ............. 1

2. DESCRIPTION.. ................ ................ ................ ............... ................. ............... .... 1

3. FIXING, DIM ENSION AND DRILLING ............... ................ ............... ................. ... 1

4. INSTALLATION ADVISE ...... ................. ............... ................ ................ ................ 1

5. WIRING DIAGR AM ... ................. ............... ................ ................ ................ ........... 2

6. DEVICE CONFIGU RATION .............. ................ ................ ................ ............... .... 2

7. CASE CLOSURE ........ ................ ................ ................ ............... ................ .......... 2

8. CASE OPENING ............ ................ ................ ................ ............... ................. ...... 2

9. HOTKEY ............... ................ ................ ................ ............... ................ ................ 3

10. ANTI-SWEAT HEAT ERS REGULATION (WITH RELAY OUTPU T) ... ................ .... 3

11. ANTI-SWEAT HEAT ERS REGULATION (WITH ANALOG OUTPU T) ... ................ . 3

12. CONFIGURATI ON AS THERMOSTAT ............... ................. ............... ................ .. 3

13. KNOB (ONLY XH55P) ......... ................ ................ ................ ............... ................. . 3

14. PARAMETER LIST. ................. ............... ................ ................ ................ .............. 3

15. RELAY CONFIGUR ATION .... ................ ............... ................. ............... ................ 4

16. TECHNICAL D ATA ................ ................ ................ ................ ................ .............. 5

1. GENERAL WARNINGS

1.1 PLEASE READ BEFORE USING THIS MA NUAL

 This manual is part of the product and should be kept near t he instrument for easy

and quick reference.

 The instrument shall not be used for purposes different from those described

hereunder. It cannot be us ed as a safety device.

 Check the application lim its before proceeding.

1.2 SAFET Y PRECAUTIONS

 Check the supply voltage is correct before connecting the ins trument.
 Do not expose to water or moisture: use the controller only within the operating

limits avoiding s udden t emperature changes with high atmospheric humidity to
prevent formation of condensation

 Warning: disconnect all elec trical connections before any kind of m aintenance.
 Fit t he probe where it is not accessible by the End User. The instrument must not

be opened.

 In case of failure or faulty operation send the inst rument back to the distributor or to

“Dixell S.r.l.” (see address) wit h a detailed description of the fault.

 Consider the maximum c urrent which can be applied to each relay (s ee Technical

Data).

 Ensure that the wires for probes, loads and the power supply are separated and far

enough from each other, w ithout crossing or intertwining.

 In case of applications in industrial environments, the use of m ains filters (our mod.

FT1) in parallel with induct ive loads could be useful.

2. DESCRIPTION

The XH50P and XH55P dev ices (version with knob) are temperature/relative humidity
probe, but their ability to calculate dew-point of the ambient where they are placed,

joined to t he available resources (relay and analog output depending on the models)
make them like a regulators.

Thanks to it s features, the device c an be used a anti-sweat heaters controller on
refrigeration f ield, as a zone therm ostat or as temperature/humidity probe on air
conditioning field. On this m anual, there are some instructions that c an be useful to
configure the device on it s main applications.

3. FIXING, DIMENSION AND DRILLING

During the fixing of the device please, pay attention for the procedure that is described
below.

In order to censure a correct functioning the device has to be placed horizontally (as
indicated by the f igure above) so that the dIXEL logo c an be read, only in this way
the drilling on the case allow the correct inflow of air into the case.

4. INSTALLATION ADVISE

In c ase of XH55P it’s necessary to mount t he knob before
closing the case. First of all, insert the pivot inside of the knob

. The ins ertion of the knob has to be done without effort. The

pivot has a small plastic toot h in order to guide y ou during the
insertion. Ended this operation, insert the other extremity of the
pivot into the trimmer that is mounted on the board as you can
see on the following figure.

Please pay attention during the fixing of the pivot on the trimmer because the small
tooth on the knob has to be on the position described by the f ollowing figure .

In case of box 503 installation, t he cables should be arrive into the devic es through the
central hole as you c an see as follow.

Otherwise, if y ou
need to use wireway
so that you cannot
use the c entral hole,
it’s advised to make
a small hole on the
bottom of t he case
after having
removed the cover
in order to avoid the
possibility to
damage the
electronic board.
Please follow the
figure nearby.

1592030000 xh50_55p r1.2 gb 2011.06.28.doc

XH50-55P 2/5

5. WIRING DIAGRAM

Here you can see the full wiring diagram. The presence/ absence of analog output and
the relay size depend on t he.

MEANING OF LEDs

RED LED  there is an alarm. It f lashes when an hotkey is detected and during the
copy of the paramet ers with HOTKEY;
GREEN LED  It is ON during normal functioning if the device is powered correctly. It
flashes when an hotkey is detected and during the copy of the parameters with
HOTKEY;
YELLOW LED  it f lashes quickly if there is serial activ ity and when an hotkey is
detected and during the copy of the parameters with HOTKEY;

6. DEVICE CONFIGURATION

The device can communicate with the serial line only if a serial address is selected. This
setting has to be done with DIP-SWITCH. The s erial address has to be arranged only in
case of using the serial line, if the programming procedure will be made by HOTKEY
this procedure can be skipped. There are 31 address available as ex plained by the
following table:

SELECTOR ADDRESS SELECTOR ADDRESS

ADR 1

ADR 1

ADR 2

ADR 3

ADR 4

ADR 5

ADR 6

ADR 7

ADR 8

ADR 9

ADR 10

ADR 11

ADR 12

ADR 13

ADR 14

ADR 15

ADR 16

ADR 17

ADR 18

ADR 19

ADR 20

ADR 21

ADR 22

ADR 23

ADR 24

ADR 25

ADR 26

ADR 27

ADR 28

ADR 29

ADR 30

ADR 31

With the selectors 6 and 7 it’s possible to configure the internal/external temperature
probe. Please see the follow ing table:

The probe used to

calculate the dew-point is

the internal probe

The probe used to
calculate the dew-point
is the external probe

The device read only t he humidity

Thanks t o the last selector (number 8) it’s possible to select the digital input polarity. If
the selector is in ON position, the digital input is considered as active when the electrical
contact is closed, with t he opposite configuration the digital input is active when the
electrical contact is opened.

7. CASE CLOSURE

After making the connections, please clos e the box following the procedure described
here below. As described as point insert the cover starting from the bottom and

perform a rotat ion as described by point The closing of the case is made when

you’ll hear a light click .

8. CASE OPENING

Please pay at tention in order to av oid the damaging of elect ronic parts. In order to open
the case, you s hould follow the figure below