JENCO 6309PDTF User manual

Operation Manual
MODEL 6309PDTF
pH/DO/Temperature
Transmitter/Controller
6309PDTF

1
CONTENTS
GENERAL INTRODUCTION.........................................................................................2
ASSEMBLY...................................................................................................................2
A. Mounting Procedure............................................................................................2
B. Cleaning The Meter..............................................................................................3
DISPLAY & KEY FUNCTIONS.....................................................................................3
A. Display................................................................................................................3
B. Operational Keys Description...............................................................................5
REAR CONNECTORS..................................................................................................6
TURNING ON/OFF THE METER..................................................................................7
MODEL 6309PDTF MODES.........................................................................................7
A. Measure Mode.....................................................................................................7
B. Calibration/Setting Mode......................................................................................9
1. Password check page..................................................................................10
2. User setting page.........................................................................................10
3. pH calibration page......................................................................................11
4. pH control settings page..............................................................................13
5. DO calibration page.....................................................................................14
6. DO control settings page..............................................................................15
7. Current out page..........................................................................................16
8. Temp. control page......................................................................................17
9. RS485-RTU/password settings page.............................................................18
CONTROLLING THE RELAYS...................................................................................18
A. Isolation Voltage................................................................................................18
B. Output Load.......................................................................................................18
C. Relay Action, Relay Setpoint, Hysteresis Mode & Hysteresis Value..................... 19
D. pH Relays..........................................................................................................20
E. DO Relays..........................................................................................................21
F. Temperature Relay.............................................................................................21
4 - 20 mA OUTPUT.....................................................................................................21
A. Isolation Voltage................................................................................................21
B. Output Load.......................................................................................................21
C. pH Linear Output...............................................................................................22
D. DO Linear Output ..............................................................................................22
E. pH Antilog Output..............................................................................................23
RS485 Interface Operation........................................................................................23
A. Introduction.......................................................................................................23
B. Preparing The Meter...........................................................................................23
ERROR DISPLAYS AND TROUBLESHOOTING.......................................................24
pH BUFFERS..............................................................................................................25
DO ALTITUDE/PRESSURE TABLE...........................................................................26
SPECIFICATIONS...................................................................................................... 27
WARRANTY............................................................................................................... 28

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GENERAL INTRODUCTION
The Jenco Model 6309PDTF (pH, DO and Temperature) system is a rugged microprocessor
based meter assembled in a watertight ¼ DIN case, designed for use in laboratories and
process control applications.
The model 6309PDTF microprocessor allows the user to easily recalibrate the parameters for
the probes. The DO system requires only a single point calibration, regardless of which
dissolved oxygen display used. The microprocessor also performs a self-diagnostic routine
every time the user turns on the unit providing basic information about the stability of the meter.
The system simultaneously displays pH, DO, temperature, relay status and current output in one
graphic LCD screen. The LCD also includes a backlight for low-lit environments. This system
uses pH electrode for the pH, a “polygraphic clark” membrane for the DO and a precise
thermistor for temperature, providing the user with accurate readings for all measurements.
The model 6309PDTF is equipped with 5 relays (2 programmable high/low action relays for pH.
2 programmable high/low relays for DO and 1 programmable high/low relay for temperature). All
relays are hysteresis driven and configurable to CENTER or EDGE mode. The system also has
an isolated 4-20 mA analog output, offset and span configurable for the pH or DO display.
The model 6309PDTF comes with a RS485 interface which can easily let the user log all data
(from multiple model 6309 or 6308) with an PC.
ASSEMBLY
Carefully unpack the meter and accessories. Inspect for damages made in shipment. If any
damage is found, notify your Jenco representative immediately. All packing materials should be
saved until satisfactory operation is confirmed.
A. Mounting Procedure
1
. Make a cutout on any panel, with
a thickness of 1/16 in. (1.5 mm) to
3/8 in. (9.5mm).
2
. Remove the mounting assembly
from the controller and insert the
controller into the cutout.
3
. Replace the mounting bracket
assembly onto the controller and
secure the controller to the
mounting panel.

3
Warning: If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
B. Cleaning The Meter
1. Be sure to remove the power before attempting to clean the meter.
2. Use a lint free cloth and clean water or neutral detergent.
3. Wipe the outer surface of the meter only.
4. Wipe-dry the meter before powering again.
DISPLAY & KEY FUNCTIONS
A. Display
Figure 1
1. -
This will be displayed if Calibration/Setting
pages are password locked meaning the
user can’t change the values unless the
correct 4 digit number has been entered.
2. RELAY-
This will show the status of the relays.
At Power-ON a “DISABLED” message will
be displayed for about three seconds before
going to “NORMAL or CHECK STATUS”
operation. After exiting the
Calibration/Setting pages and the unit is not
password locked, a “FROZEN” message will
be displayed for about three seconds before
returning to “NORMAL or CHECK STATUS”
operation. If no relay is ON then the
“NORMAL” message will be displayed. If
any relay is ON then the “CHECK STATUS”
will be displayed.

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3. CURRENT OUT-
This will display the actual output of the 4-20
mA output. At POWER-ON this will show
“OFF” for about three seconds before going
to normal operation. After exiting the
Calibration/Setting pages a “FROZEN”
message will be displayed for about 3
seconds before returning to normal
operation. An “ERROR” display here means
that the absolute difference between 4 mA
and 20 mA is less than 1.0 pH (If pH
LINEAR or pH ANTILOG is selected) or less
than 1.0% (If DO LINEAR is selected and
RELAY/mA is set at %) or 0.10 ppm (If DO
LINEAR is selected and RELAY/mA is set at
ppm) and that the current output is disabled.
4. H,L-
One or both of these annunciators will be
displayed if the left side reading (LARGE
FONT DISPLAY) triggered the respective
relay settings. The rightmost character will
indicate RELAY 1 if the display is pH or
RELAY 3 if the display is DO. The leftmost
character will indicate RELAY 2 if the
display is pH or RELAY 4 If the display is
DO. If the display is DO, the annunciators
will only indicate the unit selected at the
RELAY/mA option in the “DO calibration
page”.
H : High action relay and the relay is
energized.
L : Low action control and the relay is
energized.
5. MAIN DISPLAY-
This reading uses the biggest font and the
reading here is the only one that will affect
the analog output. You can only select the
DO or pH reading to be shown here by
changing the Transmitter Output option.
6. H,L-
One or both of these annunciators will be
displayed if the left side reading (MEDIUM
FONT DISPLAY) triggered the respective
relay settings. The rightmost character will
indicate RELAY 1 if the display is pH or
RELAY 3 if the display is DO. The leftmost
character will indicate RELAY 2 if the
display is pH or RELAY 4 If the display is
DO. If the display is DO, the annunciators
will only indicate the unit selected at the
RELAY/mA option in the “DO calibration
page”.
H : High action relay and the relay is
energized.
L : Low action control and the relay is
energized.
7. SECONDARY DISPLAY-
This is the secondary reading and no analog
output is supplied.
8. H,L-
One of these annunciators will be displayed
if the temperature reading triggered the
temperature relay setting. The temperature
relay setting can be configured to HIGH or
LOW.
H : High action relay and the relay is
energized.
L : Low action control and the relay is
energized.
9. TEMPERATURE-
The current temperature of the solution.

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B. Operational Keys Description
Figure 2
NO.
Key
Description
1
MODE-
In the measure mode, this key will change the DO display to DO % or DO ppm.
In the Calibration/Setting mode this key will move to the next digit of the current
active parameter.
In the Calibration/Setting mode, pressing this key for two seconds will move the
user back to the previous parameter.
2
CAL/VIEW-
Pressing this key for about two seconds, during normal display mode will switch
to Calibration/Setting mode.
During Calibration/Setting mode, pressing this key will switch to the next
available Calibration/Setting page. Pressing this key at the last User/Calibration
page will return the user to the normal display mode.
3
UP-
During Calibration/Setting mode, this key will increment the current blinking digit
of the active parameter.
4
DOWN-
During Calibration/Setting mode, this key will decrement the current blinking
digit of the active parameter.
During pH calibration, the user can press this key to recalibrate the stand or
slope buffer again.

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5
ENTER-
During Calibration/Setting mode, this key will save the current modified
parameter and move to the next parameter.
6
LIGHT-
This key will turn on or turn off the backlight of the LCD.
The backlight will automatically turn off if there is no key activity within two
minutes.
REAR CONNECTORS
Figure 3
For wiring the probes, relays, analog output, RS485 and power cord, please see proper
wiring instructions indicated below. Be sure the AC plug is not plugged-in. Remember that
the unit is ON once the user plugs in the power cord to an AC power supply.
1. Connect the AC line to the rear of the meter. The model 6309PDTF can be used with
115 or 230 VAC 50/60 Hz. Power consumption is 6 watts. Make sure the EARTH
connector is connected to the earth lead of the AC power line.
2. Connect the proper load to the output relays. Make sure that the load does not exceed
the relay rating, 5 Amp at 115 VAC and 2.5 Amp at 230 VAC.
3. Set the proper load to the 4-20 mA-output connector. Make sure that the load impedance
is less than 500 Ohms.
[Note: MAKE SURE YOU CONNECT THE AC POWER CORD TO THE CORRECT AC
TERMINALS. CONNECTING INCORRECTLY MAY DAMAGE THE UNIT
PERMANENTLY.]

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TURNING ON/OFF THE METER
MODEL 6309 PDTF
SELF DIAGNOSTICS
EEPROM
RAM
ROM
VERSION :3.00
:OK
:OK
:OK
By just plugging the unit to a correct AC voltage, the unit will be ready for use. There is no
Power key so unplugging and plugging the unit will turn OFF or turn ON the unit respectively.
After the unit is turned on, it will perform some basic self-diagnostics and will display “OK” or
“BAD”. If you received any “BAD” messages turn OFF the unit and turn it ON again. (See
ERROR DISPLAYS AND TROUBLESHOOTING).
If the message persists then you might need to call your distributor. (See WARRANTY) .
After the self-diagnostic is complete, the temperature reading will be displayed on the lowest
part of the screen and the user is ready to make DO or pH measurements.
MODEL 6309PDTF MODES
A. Measure Mode
Turning ON the unit will always display in the measure mode.

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The position of pH and DO display can be switched depending on the selected analog
output on the Current out setting page of the Calibration/Setting mode. (See
Calibration/Setting Mode)
This meter is designed to provide 4 distinct measurements:
1. Temperature
Current temperature of the solution, which is always displayed.
2. pH
The degree of acidity or alkalinity of the solution (with automatic temperature
compensation).
3. Dissolved Oxygen %
A measurement of oxygen in percent saturation.
4. Dissolved Oxygen ppm
A measurement of oxygen in ppm.
Temperature, pH, and DO (% or ppm) are always simultaneously displayed in the graphic
LCD screen in normal mode. The user can select which DO unit to display by pressing the
“MODE” key.

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B. Calibration/Setting Mode
Pressing the “CAL/VIEW” key for about two seconds during the measure mode will bring-
up the first page of eight pages of the Calibration/Setting mode. Pressing “CAL/VIEW”
key will switch to the next page. At the last page, press “CAL/VIEW” key again will return
the user to measure mode.
Below is a simple flowchart showing the path of the “CAL/VIEW” key:
The user can change any blinking words or digit by pressing the “UP” or “DOWN” keys.
For options in digit format, the user needs to press the “MODE” key to move to the next
digit. If the user is satisfied with the selection made, press the “ENTER” key to save the
changes and move to the next option. If the user does not need to change the current
blinking option just press the “ENTER” key to move to the next selection.

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1. Password check page
a. Screen illustration
PASSWORD CHECK
ENTER PASSWORD:0000
OR PRESS CAL TO VIEW
TO CHANGE SETTINGS
THE SETTINGS ONLY"
PASSWORD LOOKED
The user will only see this page if the unit is password locked.
To change any settings or calibration, the user needs to unlock the system to remove the
“PASSWORD LOCKED” message by entering the correct 4-digit password.
The user can still view all the pages of Calibration/Setting mode if the system is
password locked by just pressing the “CAL/VIEW” key on this page. If the unit is
“PASSWORD LOCKED”, going to Calibration/Setting mode will not affect the function
of the relays.
[Note: If the unit is not locked then every time the user enters the Calibration/Setting
mode the relays and analog out will be frozen.]
2. User setting page
a. Screen illustration
USER SETTINGS
!! WARNING !!
ARE NOW FROZEN!
RELAYS & ANALOG OUT
PRESS CAL TO PROCEED
The user will only see this page if the unit is not password locked. This page is just a

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warning, telling the user that all relays are frozen and that the user can calibrate and
change the settings.
[NOTE: FROZEN means all the relays and the analog out will maintain their last status
until the user returns to normal display mode.]
3. pH calibration page
a. Screen illustration
pH CALIBRATION
1.BUFFER 1: 7.00 pH
3 STAND: 7.00 pH WAIT
2 BUFFER 2: 4.00 pH
4 SLOPE: 4.00 pH WAIT
* SAVING *
ATC TEMP: 25.0 C
EFFICIENCY 100.0%
1) ATC TEMP.- The ATC temperature indicates the current temperature of the selection.
2) BUFFER 1 - In this option the user can select which buffer to use for the
standardization calibration. The user can choose 7.00 or 6.86 pH by using the “UP”
and “DOWN” keys and pressing the “ENTER” key to save the choice.
3) BUFFER 2 - After the user selected the buffer 1, this option will let the user select the
second buffer to use to calibrate the slope. The user can choose 4.00 pH, 4.01 pH,
9.18 pH or 10.01 pH by using “UP” and “DOWN” keys and pressing the “ENTER”
key to save the choice.
4) STAND - This is the actual pH calibration process. This line will display the buffer to
be used for STAND (OFFSET) calibration, depending on the choice the user made in
BUFFER 1. (See “Step by Step pH Calibration”)
5) SLOPE - This is part 2 of the pH calibration process. This line will display the buffer to
be used for SLOPE calibration, depending on the choice the user made in BUFFER 2.
(See “Step by Step pH Calibration”.)
b. pH calibration
1) Press the “CAL/VIEW” key to go to pH Calibration page. If the unit is password locked,
enter the correct password to remove the password lock first.
2) Select BUFFER 1 (7.00 or 6.86), by using the “UP” or “DOWN” keys, then press the
“ENTER” key to save the selection.

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3) Select BUFFER 2 (4.00, 4.01, 9.18 or 10.01), by using the “UP” or “DOWN” keys,
then press the “ENTER” key to save the selection.
4) Clean the pH electrode and temperature probe with de-ionized or distilled water.
5) Place the pH electrode and temperature probe into BUFFER 1.
6) Press the “ENTER” key. A “WAIT” message will blink indicating that the meter is
waiting for a stable reading. The display will be locked to the buffer value
corresponding to the temperature of BUFFER 1. When a stable reading is reached,
the unit will blink a “SAVE” message.
7) Press the “ENTER” key to save the STAND calibration and prepare to do a SLOPE
Calibration. If the STAND calibration is not satisfactory, press the “DOWN” key to
recalibrate BUFFER 1 and repeat from step 6).
If “OVER” or “UNDER” is displayed or a blinking “SAVE” does not show after more
than few minutes then something is wrong with the BUFFER 1 or electrode. Be sure
the BUFFER 1 is correct or change a new electrode and repeat from step 4).
8) Clean the pH electrode and temperature probe with the de-ionized/distilled water.
9) Place the pH electrode and Temperature probe into BUFFER 2.
10) Press the “ENTER” key. A “WAIT” message will blink indicating that the meter is
waiting for a stable reading. The display will be locked to the buffer value
corresponding to the temperature of BUFFER 2 . When a stable reading is reached,
the unit will blink a “SAVE” message.
11) Press the “ENTER” key to save the SLOPE calibration. If the SLOPE calibration is
not satisfactory, press the “DOWN” key to recalibrate BUFFER 2 and repeat from
step 10.
If “OVER” or “UNDER” is displayed or a blinking “SAVE” does not show after more
than few minutes then something is wrong with your BUFFER 2 or electrode. Be sure
the BUFFER 2 is correct or change a new electrode and repeat from step 4).
12) Set-up the Relay, mA OUT and Temperature control.
13) The unit is ready for measurement and control.
EFFICIENCY – After saving the SLOPE a new efficiency will be displayed for about 4
seconds and then will move to the next page.
* (Efficiency = (new slope/ ideal slope)* 100%)
[NOTE: We recommend that the user uses a new electrode if the electrode efficiency is
lower than 80%.]

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4. pH control settings page
a. Screen illustration
pH CONTROL SETTINGS
1.HI RELAY 1:10.00 pH
3.HYSTERESIS:CENTER
2.LO RELAY 2: 4.00 pH
4.HYSTERESIS:1.00 pH
* SAVING *
1) HI RELAY 1 - The control type for this relay is changeable, the user can choose “HI”-
type or “LO” type. In HI-type, RELAY 1 will turn ON if the pH is greater than the
RELAY 1 setting. In LO-type, RELAY 1 will turn ON if the pH is less than the
RELAY 1 setting which is modified by the hysteresis value and hysteresis mode.
Use “UP” and “DOWN” keys to change the RELAY 1 type then press “ENTER” key
to save. After selecting the RELAY 1 type, the user can now select the RELAY 1
setting.
Use “UP” and “DOWN” keys to change the blinking digit. Use the “MODE” key to
select another digit and the “ENTER” key to save the new setting.
2) LO RELAY 2 - The control type for this relay is changeable, the user can choose “HI”-
type or “LO” type. In HI-type, RELAY 2 will turn ON if the pH is greater than the
RELAY 2 setting. In LO-type, RELAY 2 will turn ON if the pH is less than the RELAY 2
setting which is modified by the hysteresis value and hysteresis mode.
Use “UP” and “DOWN” keys to change the RELAY 2 type then press “ENTER” to
save. After selecting the RELAY 2 type, the user can now select the RELAY 2
setting.
Use “UP” and “DOWN” keys to change the blinking digit. Use the “MODE” key to
select another digit and the “ENTER” key to save the new setting.
3) HYSTERESIS - This is the hysteresis mode for pH RELAY 1 and pH RELAY 2. The
user can choose between “CENTER” or “EDGE”.
4) HYSTERESIS - This is the actual value of the hysteresis. The user can change this
value from 0.01 to 3.99 pH.

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5. DO Calibration page
a. Screen illustration
DO CALIBRATION
1.PRESSURE: 1013 mBar
3.RELAY/mA UNIT: %
2.SALINITY: 0.0 ppt
4.CAL
* SAVING *
ATC TEMP.: 25.0 C
VALUE:
100.0%
1) ATC TEMP.- This line shows the current temperature of the solution.
2) PRESSURE- User changeable atmospheric pressure, range from 600 to 1100 mBar
for DO computations. If the user wants to use other pressure unit, go to the
“DO ALTITUDE/PRESSURE TABLE.”
3) SALINITY – User changeable salinity range from 0 to 49.9 ppt for DO computations.
4) RELAY/mA UNIT - This is the unit which the DO RELAY 3 and DO RELAY 4 will be
based upon. The DO RELAY 3 and DO RELAY 4 values for %and ppm are saved in
different memory location.
5) CAL VALUE: This is the DO calibration option. If the user moves the pointer to this
Line, a flashing “”icon will appear. Pressing the “ENTER” key will start the DO
calibration. The unit of this calibration will depend on the unit of DO at the
measure mode. To accurately calibrate the model 6309PDTF, the user will need the
following information:
i) The approximate atmospheric pressure (in mbar) of the region in which the dissolved
oxygen measurements will be taken.
ii) The approximate salinity of the water will be analyzing. Fresh water has a
salinity of approximately zero. Seawater has a salinity of approximately 35 parts per
thousand (ppt).
b. DO calibration
1) Clean the DO probe with de-ionized or distilled water.
2) Hold the DO probe in the air gently with the sensor facing down.

15
3) Wait around 2 hours for the dissolved oxygen and temperature readings to stabilize.
Pressing the “ENTER” key will start the calibration.
4) If the user is calibrating in “%” then the 100% calibration will be displayed. An error will
be displayed if the input is not within the normal DO range. A “ ” icon will flash.
Pressing the “ENTER” key will start the calibration. If the input is not within the DO
calibration limit then an error message will be displayed. If all is well then it will save
the new calibration and move to the next page.
5) If the user is calibrating in “ppm” then the current reading in ppm will be displayed.
Press the “ENTER” key, the unit will capture the current value and then the user can
change the value by using the “MODE”, “UP” and “DOWN” keys. If the user is
satisfied with the ppm setting, press the “ENTER” key to save the new calibration. If
the DO input is within calibration range then the new calibration will be saved and
move to the next page, otherwise an error message will be displayed.
6. DO control settings page
a. Screen illustration
DO CONTROL SETTINGS
1.HI RELAY 3:100.0%
3.HYSTERESIS:EDGE
2.LO RELAY 4: 0.0%
4.HYSTERESIS:10.0%
* SAVING *
1) HI RELAY 3 - The control type for this relay is changeable, the user can choose “HI” -
type or “LO” - type. In HI-type, RELAY 3 will turn ON if the DO is greater than the
RELAY 3 setting. In LO-type, RELAY 3 will turn ON if the DO is less than the
RELAY 3 setting which is modified by the hysteresis value and hysteresis mode.
Use “UP” and “DOWN” to change the RELAY 3 type then press “ENTER” key to
save. After selecting the RELAY 3 type, the user can now select the RELAY 3 setting.
Use “UP” and “DOWN” keys to change the blinking digit. Use the “MODE” key to
select another digit and the “ENTER” key to save the new setting.
2) LO RELAY 4 - The control type for this relay is changeable, the user can choose “HI”-
type or “LO” type control. In HI-type, RELAY 4 will turn ON if the DO is greater than
the RELAY 4 Setting. In LO-type, RELAY 4 will turn ON if the DO is less than the
RELAY 4 setting which is modified by the hysteresis value and hysteresis mode.

16
Use “UP” and “DOWN” to change the RELAY 4 type then press “ENTER” key to
save. After selecting the RELAY 4 type, the user can now select the RELAY 4 setting.
Use “UP” and “DOWN” keys to change the blinking digit. Use the “MODE” key to
select another digit and the “ENTER” key to save the new setting.
3) HYSTERESIS - This is the hysteresis mode for DO RELAY 3 and RELAY 4. The user
can choose between “CENTER” or “EDGE”.
4) HYSTERESIS - This is the actual value of the hysteresis. The user can change this
value from 0.1 to 99. 9 % or 0.01 to 9.99 ppm.
7. Current out settings page
a. Screen illustration
CURRENT OUT SETTINGS
1.TRANSMITTER OUTPUT:
2. 4mA OUT: 0:00 pH
pH LINEAR
3.20mA OUT:14:00 pH
*SAVING*
1) TRANSMITTER OUTPUT- This option would let the user choose if the current output
type is “pH LINEAR”, “pH ANTILOG” or “DO LINEAR”.
[NOTE: The DO mA output will be based on the “RELAY/mA UNIT” where as the
“DO calibration” is based on the normal mode DO unit.]
2) 4 mA OUT – This value will be used in conjunction with 20 mA to plot the current
output. (See section 4 - 20 mA OUTPUT.)
3) 20 mA OUT – This value will be used in conjunction with the 4 mA value to plot the
output. (See section 4 - 20 mA OUTPUT.)
[Note: If the absolute difference between 4 mA and 20 mA is less than 1.00 pH (If pH
LINEAR or pH ANTILOG is selected) or less than 1.0% (if DO LINEAR is selected and
RELAY/mA is set at %) or 0.10 ppm (if DO LINEAR is selected and RELAY/mA is set
at ppm) then the CURRENT OUT will display “ERROR” indicating that the output is
disabled.]

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8. Temp. control settings page
a. Screen illustration
TEMP.CONTROL SETTINGS
1.RELAY 5 :HIGH
2.SET POINT :100.0 C
3.HYSTERESIS:EDGE
* SAVING *
4.HYSTERESIS: 1.0C
1) RELAY 5 – The temperature has only one relay to control. The user needs to set what
control type it will use, HIGH or LOW type. (In HIGH-type, RELAY 5 will turn ON if the
temperature is greater than the RELAY 5 setting. In LOW-type, the RELAY 5 will turn
ON if the temperature is less than the RELAY 5 setting which is modified by the
hysteresis value and hysteresis mode.
2) SET POINT - This is the RELAY 5 control set point.
[Note: The user can set the SET POINT from 0.0 to 199.9 °C, but be reminded that
the range of the temperature is –10.0 to 120 °C.]
3) HYSTERESIS - This is the hysteresis mode for temperature relay. The user can
choose between “CENTER” or “EDGE”.
4) HYSTERESIS -This is the actual value of the hysteresis. The user can change this
value from 0.1 to 19.9 °C.

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9. RS485-RTU/password settings page
a. Screen illustration
RS485-RTU/PASSWORD
1.PARITY :NONE
SETTINGS
2.RS485-RTU ID:01
3.PASSWORD :0000
1) PARITY – This option would let the user choose if the current RS-485 type is “EVEN”,
“NONE” or “ODD”.
2) RS485-RTU ID – This is the unique ID/Address for the unit. If the user is connecting
multiple model 6309PDTF or other Jenco models for logging purposes then this
ID/Address must be unique for each connected unit. This ID/Address is the same
address that must be used by the PC program to communicate with this unit.
3) PASSWORD - The meter allows the user to set a four digit password. At the
RS485-RTU/password settings page, press "MODE" key. The number starts to blink.
Use "UP" or "DOWN" key to select the desired digit. Press "ENTER" key to save
password.
[Important note: The password must be entered at password check page to change
settings.
The user is responsible for remembering the password number, otherwise the user
would not be able to calibrate or change all the settings.]
CONTROLLING THE RELAYS
A. Isolation Voltage
The maximum isolation voltage of the relay output contacts is 1500 VDC. The voltage
differential between the relay output contacts and the load should not exceed 1500 VDC.
B. Output Load
The current through the relay output contacts should not exceed 5 Amp at 115 VAC and
2.5 Amp at 230 VAC in order not to cause permanent damage to the relay contacts. This
rating is specified for resistive loads only.

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C. Relay Action, Relay Setpoint, Hysteresis Mode & Hysteresis Value
If the relay control type is set to HI and the hysteresis mode is CENTER, the relay will turn
ON at [(RELAY SETPOINT) + (0.5 * hysteresis value)], and will turn OFF at [(RELAY
SETPOINT) - (0.5 * hysteresis value)].
If the relay control type is set to HI and the hysteresis mode is EDGE, the relay will turn ON
at (RELAY SETPOINT), and will turn OFF at [(RELAY SETPOINT - (hysteresis value)].
If the relay control type is set to LO and the hysteresis mode is CENTER, the relay will turn
OFF at [(RELAY SETPOINT) + (0.5 * hysteresis value)], and will turn ON at [(RELAY
SETPOINT) - (0.5 * hysteresis value)].
If the relay type is set to LO and the hysteresis mode is EDGE, the relay will turn OFF at
[(RELAY SETPOINT) + (hysteresis value)], and will turn ON at (RELAY SETPOINT).
H.V.= Hysteresis value (Dead Band)
S.P. = Relay Set point
Relay Action
Hysteresis
mode
Effective RELAY-ON
Set point
Effective RELAY-
OFF Set point
HIGH
CENTER
S.P.+ ½(H.V.)
S.P. -½ (H.V.)
HIGH
EDGE
S.P.
S.P. - H.V.
LOW
CENTER
S.P.-½ (H.V.)
S.P.+½ (H.V.)
LOW
EDGE
S.P
S.P.+ H.V.