GUILCOR AR006684 User manual

Temperature, humidity and pressure regulator
with RS232 serial output
AR006684
AR006683
Instruction Manual

2
Table of content
1. GENERAL DESCRIPTION ......................................................................................................4
2. REGULATOR MOUNTING AND CONNECTION...............................................................4
3. DIMENSIONS.............................................................................................................................6
4. TYPICAL APPLICATION WIRING, CONNECTION OF TERMINALS .........................7
5. DESCRIPTION OF DEVICE FUNCTION AND SETTING.................................................7
5.1. DEVICE SETTING FROM THE MANUFACTURER ...................................................................................... 7
5.2. RELAY OUTPUTS ................................................................................................................................... 8
5.3. BINARY INPUTS ..................................................................................................................................... 8
5.4. ACTUAL REGULATOR PRESET ............................................................................................................... 8
5.4.1. Value assigned to output relay........................................................................................................................ 9
5.4.2. When close output relay.................................................................................................................................. 9
5.5. REGULATOR SETTING CHANGE ........................................................................................................... 10
5.5.1. Setting with PC and TSensor software.......................................................................................................... 10
5.5.2. Setting with using regulator keys .................................................................................................................. 10
5.5.3. Setting with using of Modbus communication protocol ................................................................................ 11
5.6. EXTENDED SETTING MODE.................................................................................................................. 11
5.7. RESTORE TO „FACTORY DEFAULT“.................................................................................................... 16
6. DESCRIPTION OF COMMUNICATION PROTOCOLS ..................................................16
6.1. MODBUS RTU..................................................................................................................................... 17
6.1.1. Supported functions ...................................................................................................................................... 17
6.1.2. Jumper .......................................................................................................................................................... 17
6.1.3. Modbus registers of the regulator................................................................................................................. 17
6.1.4. Far controlling of output relays status ......................................................................................................... 18
6.1.5. Output relay alarm condition configuration with using of Modbus communication protocol 2.................... 19
6.2. PROTOCOL COMPATIBLE WITH ADVANTECH-ADAM STANDARD ...................................................... 20
6.2.1. Jumper .......................................................................................................................................................... 21
7. ERROR STATES OF THE DEVICE .....................................................................................22
8. READINGS ON LCD DISPLAY ............................................................................................23
9. PREVENTIVE MAINTENANCE AND CALIBRATION ...................................................23
10. TECHNICAL SPECIFICATION............................................................................................23
10.1. TECHNICAL PARAMETERS ................................................................................................................... 23
10.1.1. Common parameters..................................................................................................................................... 23
10.1.2. AR006684 - temperature and humidity regulator......................................................................................... 24
10.1.3. AR006683 - temperature regulator, external probe...................................................................................... 24
10.1.5. Value computed from measured relative humidity and temperature ............................................................ 25
10.1.6. Relative humidity and temperature restriction.............................................................................................. 26
10.2. OPERATING CONDITIONS .................................................................................................................... 26
10.3. END OF OPERATION............................................................................................................................. 27
10.4. TECHNICAL SUPPORT AND SERVICE.................................................................................................... 27
11. APPENDIX A ............................................................................................................................28
12. APPENDIX B ............................................................................................................................28
13. APPENDIX C ............................................................................................................................29
14. APPENDIX D ............................................................................................................................30

3
General safety rules
The following summary is designed to prevent injury hazards or device damage. Operate the
instrument in accordance with this manual to prevent electric trauma.
Service should be performed by a qualified person only.
Connect and disconnect correctly. Do not connect and disconnect a lead-in cables if the device is
under electric voltage.
Do not use the instrument without the cover.
Do not use the instrument, if it does not work correctly. If the instrument seems not to work
correctly, have it checked by a qualified service person.
Do not use the instrument in an explosive environment.
Read instruction manual before the first device connection, please.
Copyright: It is prohibited to copy and edit this instruction manual and make any changes at all
without explicit agreement of Guilcor. All rights reserved.

4
1. General description
Regulators of Hx3xx line are designed for online monitoring of temperature in °C or °F, relative
humidity of air without aggressive ingredients, barometric pressure and three binary inputs for
detection of binary signals. Measured temperature and relative humidity are recomputed to following
humidity expression: dew point temperature, absolute humidity, specific humidity, mixing ratio and
specific enthalpy. It is possible to set correction for altitude (pressure offset) and to choose one of the
following pressure units: hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in2.
The device is equipped with two relay outputs for alarming or controlling of external devices. It is
possible to assign any input value to each relay, to set comparing limit, delay, hysteresis, acoustic
alarm or change its status by far control with using of Modbus communication protocol. The device
communicates via link RS232.
Type
Temperature
Humidity
Pressure
Computed value
Binary inputs
AR006684


-

3x

-
3x
AR006683 **/ - -
*/ The removable probe for compressed air measurement is noninterchangeable part of the device.
The protection of connector is IP67
**/ The type AR006683 is designed for two wires connection of external Pt1000 temperature
sensor.
Supported communication protocols are Modbus RTU and protocol compatible with standard
Advantech-ADAM. Devices are preset from manufacturer to Modbus RTU communication protocol.
If you would like to use different communication protocol then Modbus RTU, it is necessary preset
them – see latter. Temperature, relative humidity and pressure sensors are non-removable instrument
parts except H4431 device, that is designed for two wires connection of external Pt1000 temperature
sensor. Measured and computed values are displayed on dual line LCD. It is also possible to display
both readings with cyclic overwriting in 4 seconds interval. Display can be also switched OFF totally.
2. Regulator mounting and connection
Regulators are designed for wall mounting. Device must be mounted on the plane surface to
prevent its deformation. Mounting holes and connection terminals are accessible after demounting of
four screws in the corners of the box and removing the lid. There is recommended to use screws with
half round head with cross-recessed screw ST 3.9 (DIN 7981).
Devices are supplied with cable (1,5 m) equipped with CANNON 9 connector for connection to
RS232 interface.
Lace the lead-in cables (inputs, outputs, external temperature probe connectable to AR006683)
with outer diameter of 3 to 6.5 mm through the glands at the case wall and connect them
according schematic below. 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. Insert
attached plug into unused cable glands too. Do NOT connect the regulator under voltage.

5
It is NOT recommended to use the device for long time under condensation conditions. It could
be the cause of water steam condensation inside the sensor’s cover into water phase. This liquid phase
stays inside sensor’s cover and can’t escape from the cover easily. It can dramatically increase
response time to relative humidity change. If water condensation occurs for longer time it can cause
sensor damage. Similar effect can occur under water aerosol conditions.
External temperature probe connectable to
AR006683 must be type of “two wires
with shielding”. The probe cable length and
size of conductor affects measurement
accuracy. If connected probe is equipped
with metal stem, we recommend using
probes with metal stem not connected to
cable shielding. Or else it is necessary to
arrange metal stem is not connected to
any other circuitry.
The cables for binary inputs and external
sensor for regulator AR006683 must be
placed as far as possible from potential
interference sources. The cables 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. Maximum cable length
is 10 m. Connect cable shielding to proper
terminal and do not connect it to any other
circuitry and do not ground it.

6
3. Dimensions
AR006683
AR006684
Probe for compressed
air measurement

7
4. Typical application wiring, connection of terminals
DTR and RTS signals are specified for regulator supply. In case of insufficient performance of the
PC communication port it is necessary to use an external power source.
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
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
on
temperature (temperature/pressure) – by device type
relative humidity / dew point temperature
°C
hPa
0 hPa (absolute pressure)
dew point temperature
stay unchanged at previous condition
LED diode lights if input contact is open
LCD display:
value shown at first LCD line:
value shown at second LCD line:
temperature unit:
pressure unit:
correction for altitude:
computed value preset:
relay response for error:
signalization of binary inputs status:
acoustic alarm: off

8
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 6.1.4 at page 18) 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 “Appendix 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 “Appendix A”).
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 supply +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
binary 3. If binary input is not connected or is without any signal, then binary input is interpreted as
„1“, when input contact is closed (connected input), then binary input is interpreted as „0“. For each
binary input there is possible to set indication LED function – if is lighting when binary input is closed
or opened. Binary input status can be assigned to any of output relays. It is possible to choice if output
relay is closed or opened when binary input is closed/opened.
5.4. Actual regulator preset
It is possible to display actual regulator preset on its LCD display by
pressing of „“ key. If „Output relay alarm condition configuration with
using of Modbus communication protocol“ is active (Remote Control), then
device’s LCD display shows text „bloc“. It means, device’s keyboard is
disabled for time of remote control (setting change), see chapter 6.1.5 at page
19. LCD shows information about Relay1 and then Relay2 setting step by
step. Information about Relay1 are indicated with symbol „ “, for Relay2 with symbol „
“ (at right top corner of LCD). It is possible to edit parameters after pressing „SET“
key and entering of correct password „PASS“ – see chapter „Change of “Password for setting
through keys” (PASS)” at page 12. Following examples are for Relay1 setting, similarly are displayed
values for Relay2. Pressing of „ESC“ key ends this mode and switch to actual value displaying, the
same occur if more than 20 s is not pressed any key.

9
5.4.1. Value assigned to output relay
None, relay is still off
Temperature at °C
Relative humidity
Computed value
(dew point temperature)
Barometric pressure
Binary input 1, input 2
and 3 similarly
far condition 0
far condition 1
FAR0 – „far condition 0“: after device’s power on the relay is open
FAR1 – „far condition 1“: after device’s power on the relay is close
If “far condition” is assigned to output relay, then there is possible to change the output relay status
by Modbus communication protocol only. See chapter 6.1.4 at page 18.
5.4.2. When close output relay
High limit „HI“ – the relay closes when measured value exceeds preset „high limit” for longer
time than preset „delay time“. Relay goes open when measured value decrease under „high limit“
value minus the „hysteresis” value. See example.
High limit „HI“
Delay [s]
Hysteresis

10
Low limit „Lo“ – the relay closes when measured value falls below preset „low limit” for longer
time than preset „delay time“. Relay goes open when measured value exceeds „low limit“ value plus
the „hysteresis” value. See example.
Low limit „Lo“
Delay [s]
Hysteresis
5.5. Regulator setting change
5.5.1. Setting with PC and TSensor software
User’s software TSensor provides setting of all regulator parameters. The program is
available free to download at web page www.guilcor.com. Run the TSensor program and follow
the program instructions. Regulator includes hardware write protection of internal setting, new
setting is possible to write only while:
1. during write period press „SET“ key – do requested setting in TSensor software, press „SET“ key
on regulator and keep it down, then click on the button „Save Changes“ into TSensor software
and after end of write release „SET“ key, or
2. jumper placed nearby keys is closed (jumper is accessible after demounting of four screws in the
corners of the box and removing the lid ). This jumper is suitable e.g. until device adjustment is in
process and regulator is placed into calibration box and keys are not accessible. Don’t forget to
remove (open) jumper after procedure finish (restore write protection)
TSensor software supports to make the adjustment of the regulator too. This procedure is described
at file „Calibration manual.pdf“ which is installed commonly with the software.
5.5.2. Setting with using regulator keys
If „Actual regulator preset” is displayed (see chapter “Actual regulator preset” at page 8), it is
possible to enter into edit mode and edit displayed value by pressing „SET“ key. Then you are asked
for valid password (PASS). You can edit selected value if right password is entered. During value
editing there is range check executed and edited value is still compared with limits for corresponding
value (range). If inserted value is higher or lower then edited number is automatically changed to its
maximum / minimum value – for possible range see chapter „Technical parameters“ at page 23. Value
can be changed with using „“ and „“ keys. Edited value is switched in “round” -9, -8, -7, …-2, -