Emec LDSPH PLUS Series User manual

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OPERATING INSTRUCTIONS
FOR “LDSPH PLUS” INSTRUMENT SERIES
This manual contains safety information that if ignored can
endanger life or result in serious injury. They are indicated
by this icon.
Keep the instrument protected from sun and water.
Avoid water splashes.
Read Carefully ! ENGLISH Version
R5-03-19
ERMES COMMUNICATION SYSTEM
www.ermes-server.com

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Danger!
GENERAL SAFETY GUIDELINES
In emergencies the instrument should be switched off immediately! Disconnect the power cable
from the power supply!
When installing always observe local regulations!
Manufacturer is not liable for any unauthorized use or misuse of this product that may cause injury,
damage to persons and / or materials.
Caution! Instrument must be accessible at all times for both operating and servicing. Access must not be
obstructed in any way!
Feeder should be interlocked with a no-flow protection device to automatically shut-off the pumps
when there is no flow!
Pumps and accessories must be serviced and repaired by qualified and authorized personnel only!
Always discharge the liquid end before servicing the instrument!
Empty and rinse the liquid end before work on a pump which has been used with hazardous or
unknown chemicals!
Always read chemical safety datasheet!
Always wear protective clothing when handling hazardous or unknown chemicals!
Instrument must be operated / serviced by trained technicians only!
All connection operations must be performed while the instrument is not connected to main
supply!
Missed activation for Min/Max alarm and Maximum Dosing Alarm may cause hazardous overdosing!
NORME CE
EC RULES(STANDARD EC)
NORMAS DE LA CE
Direttiva Bassa Tensione
Low Voltage Directive
Directiva de baja tensión
Direttiva EMC Compatibilità Elettromagnetica
EMC electromagnetic compatibility directive
EMC directiva de compatibilidad electromagnética
2014/35/UE
2014/30/UE
⎬
⎬

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1. Introduction
LDSPH PLUS is a microprocessor based digital regulator for pH with temperature reading / compensation and mA
module (feed forward). On/Off, impulsive proportional, proportional PWM or fixed PWM, Water Meter and PID are
main working modes.Also available FEED FORWARD setting for mA module. Pulses per minute can be set for outputs.
Working ranges are: 0 to 14 pH.All information are provided through a large LCD display.Using a revolutionary wheel
control the instrument can be easily programmed. LDSPH is housed in a IP65 plastic box.
INPUTS:
- Stand-by
- Flow
- pH level
- pH probe
- Temperature probe
- Water Meter
LDSPH-A PLUS Version stops probe’s reading when into STANDBY mode and activates the cleaning probe procedure
(if enabled and for set time into SELF CLEAN MENU) and restore time. At the end of the STANDBY a new cleaning
cycle and restore time re-start.
2. The wheel
Located in the upper right side of LDSPH there is a wheel that must be used to control the instrument. Wheel can
be rotated in both directions to scroll over the menus and / or pressed to confirm highlighted selection / value.
NOTE: Once changes are made press “OK” to save and exit from submenu. Press “ESC” to exit without saving.
Rotate wheel to scroll through menus or options
Press wheel to select highlighted option
SCROLL
SELECT
OUTPUTS:
- 2 relay outputs (pH and alarm)
- 2 opto coupled pulses outputs (pH and temperature)
- 2 current outputs (pH and Temperature)
- Main alarm

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3. Mainboard Connections
Unplug instrument from main power supply then perform connections by following the above picture.
A: Main Fuse (6A T)
B: Instrument Fuse (3.15A T)
C - D - E : Factory reserved +5V
L(Live) - E(Earth) - N(Neutral): 85÷264VAC* or 18÷36VAC* 50/60 Hz *see instrument’s label
1(Live) - E(Earth) - N(Neutral): 85÷264VAC - 5A 50/60 Hz Relay Output “pH Relay 2”. To use with ON/OFF or PWM device
2(Live) - E(Earth) - N(Neutral): 85÷264VAC - 5A 50/60 Hz Relay Output “pH Relay”. To use with ON/OFF or PWM device
3(Live) - E(Earth) - N(Neutral): 85÷264VAC alarm output (MAX 5A)
4(Live) - E(Earth) - N(Neutral): 85÷264VAC “SELF CLEAN” output (MAX 5A)
5(Live) - E(Earth) - N(Neutral): 85÷264VAC “CIRCULATOR PUMP” output (MAX 5A)
6(Green) - 7(Brown) - 8(White) - 9(Yellow): PT100 temperature probe (remove jumper / resistor prior to install probe)
11(-) - 10(+): Standby contact
11(-) - 12(+): pH Level 1 contact
19(-) - 18(+): pH Level 2 contact
14(+ Brown) - 15(Black) - 16(- Blue) - 17(GND): Proximity sensor mod. “SEPR” (dont’ remove jumper between blocks 16 and 17)
21(GND) - 28(+RS485) - 29(-RS485): RS485
24(-) - 25(+): Opto coupled output “pH PULSE”. To use with “IS” , “MF” , “PLUS” series dosing pumps
26(-) - 27(+): Opto coupled output “pH PULSE 2”. To use with “IS” , “MF” , “PLUS” series dosing pumps
31(-) - 32(+): mA Current Output pH
34(-) - 35(+): mA Current Output Temperature
31(-) - 30(+): mA Current Output PID
36(+) ; 37(-): WM Input (max input frequency 500Hz)
L 1 2 3 4 5
E E E E E E
N N N N N N
6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21
22 23 24 25 26 27 28 29
A
B
MAIN BOARD
DISPLATY BOARD
30 31 32 33 34 35 36 37
Warning: Connections must be perfomed by qualified and trained personnel only.
USB or GSM or ETHERNET modules
(see this manual “Appendix”)
⎬Max resistive load: 500 Ohm
C D E
pH probe input
mA Module
(see this manual “Water Meter”)

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4. Main Screen
When into normal operating mode, LDSPH shows the following main screen:
UNIT (1)
VALUES (2)
OUTPUTS STATUS (3)
Main screen zones:
(1) UNIT “pH” is the measuring unit for pH probe.
According to selected probe, this field may appear different.
(2) VALUES These numbers are values read by the probes.
According to selected probe, this field may appear different.
(3) OUTPUTS STATUS These fields are related to current outputs status and instrument activity.
For more information rotate the wheel when into main screen. (see next page)
During critical situations a warning / alarm message may appear. To
in-depth explanation completely rotate clockwise the wheel to review main
instrument parameters and current outputs status.
*sold as option
Note: the word “PUMP” as shown into this manual refers to a “dosing device” connected to the instrument!
WARNING MESSAGES
NOTIFICATION AREA
WARNING MESSAGE
NOTIFICATION AREA
LAN CONNECTION OK - ERMES CONNECTION OK
LAN CABLE DISCONNECTED
LAN CABLE CONNECTED - ERMES NOT AVAILABLE
Connection Status
CONNECTED TO USB PEN-DRIVE
ERMES OK
GSM Signal*

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5. Quick status check
From main screen completely rotate clockwise the wheel to review main instrument parameters and current outputs
status.
Local Time
Local Date
pH probe reading
Temperature probe reading
Dosing alarm condition
Probe failure status
Alarm contact status
Flow contact status
Tank Level status
Last pH calibration result
Last pH calibration date
Last Temp. calibration result
Last Temp. calibration date
Outputs Status
See mainboard (page 4) for related
connetions.

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6. Password
To grant access into “Main Menu” press the wheel from main screen and enter the passcode.
If this is the first time here then the passcode is 0000 (factory preset). Press wheel 5 times to enter into “Main
Menu”. Otherwise press the wheel 1 time and enter the passcode. Numbers can be selected rotating the wheel.
To set a new passcode choose “PARAMETERS” from “Main Menu” , move on “New Pcode”, click on wheel and
enter a four numbers code. Click on “EXIT” and choose “YES” to save request. The new passcode is now ready.
Lost passcode ?
Please dont’ forget the passcode (if changed). In the unfortunate event, please call your local distributor for unlocking procedure.There is no way for you
to recover lost passcode.
X5

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7. “Main Menu” list
To grant access into “Main Menu” enter the passcode (as described in previous chapter). Once into “Main Menu”
rotate the wheel to scroll through all the options available.
“Setpoint” (see page 9)
“Calibration” (see page 14)
“Parameters” (see page 16)
“Output manager” (see page 17)
“Instrument reset” (see page 18)
“Dosing alarm” (see page 19)
“International” (see page 20)
“Probe Failure” (see page 21)
“Compensation” (see page 32)
“Flow” (see page 22)
“Service” (see page 22)
“Out of Range Alarm” (see page 24)
“mA Outputs” (see page 23)
Communication (see below)
“Log Setup” (see page 38)
“Log View” (see page 38)
“Self Clean” (see page 25)
“Circulator Pump” (see page 26)
“Water Meter” (see page 29)
“Feed Forward ” (see page 30)
“RS485 Setup” (see page 36)
“SMS menu” (see page 36)
“TCP IP” (see page 37)
“GPRS” (see page 38)
“Email” (see page 38)
“Modbus” - (see page 39)

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8.1 “Set-Point”, pH (On/Off)
“pH pulse” and “pH pulse 2” outputs can be set to operate within: On/Off, Proportional (%) or disabled (OFF) modes.
“pH relay” and “pH relay 2” outputs can be set to operate within: On/Off, Proportional PWM, Fixed PWM or
disabled (OFF) modes.
8.2 “Set-Point”, pH (on/off)
This mode is valid for all pH related outputs. On/Off mode set the instrument to operate using two set values
that enable or disable the pH pump. To use this mode move cursor on “Working Mode”. Press the wheel and
select it.
ON/OFF mode while dosing ALKALI
Set pH value at 7.00 OFF and 6.90 ON. Set Pulse Speed per minute (strokes per minute) based on dosing device
capabilities.
Instrument will leave the pH pump active until reading value will increase up to 7.00pH.
At 7.00pH the pH pump will be disabled until reading value will decrease under 6.90pH.
This mode is valid for all pH related outputs. ON/OFF mode while dosing ACID
Set pH value at 7.00 OFF and 7.10 ON. Set Pulse Speed per minute (strokes per minute) based on dosing device
capabilities.
Instrument will leave the pH pump active until reading value will decrease up to 7.00pH
At 7.00pH the pH pump will be disabled until reading value will increase up to 7.10pH.

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8.2 “Set-Point”, pH proportional & proportional water meter (pulse)
This mode is valid for “pH pulse” and “pH pulse 2” outputs only.
Proportional mode set the instrument to operate using a calculated percentage between two set values that
enable or disable the Chlorine pump. To use this mode move cursor on “Working Mode”. Press the wheel and
select it.
PROPORTIONAL mode between 7pH(0 P/m) and 8pH (180 P/m). p/m is : pulses per minute
In this mode the pH pump will be “ON” for values greater than 8pH with maximum set pulses per minute capacity
(e.g.: 180) and it’ll be “OFF” for values lower than 7pH. For values of 7.5pH pump will be “ON” with 90 pulses
per minute capacity. The calculation is based on 180 pulses per minute setting (see page 22). To end procedure
move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES” to save or
“NO” to discard changes.
Proportional Water Meter
Proportional mode can also be set into PROP+WM mode. This option allows to regulate proportional input based on
flow detected by water meter at set percentual values.
e.g.: reading at 9 will have an output of 90 P/m (50%). Adding the proportional flow from the water meter with
parameters set between 20 % (at 0mc/h) and 100% (at 8mc/h) results will be that (as example):
At 4 mc/h will have a working period of 54 P/m (60% of 90P/m)
60% is the middle value between 20% and 100% for reading of 4mc/h

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8.3 “PWM” proportional pH & proportional water meter (relay)
This mode is valid for “pH relay” and “pH relay 2” outputs only. Pulse-width modulation (PWM) of a signal or power
source involves the modulation of its duty cycle, to either convey information over a communications channel or
control the amount of power sent to a load.
This mode works over a settable (0 to 100 seconds) time to switch on or off selected output.
During this time if reading value will move towards a set value (on or off) the PWM will operate the output on
timered basis. Reaching the set value the PWM will permanently leave on or off the output.
Parameters to set for this mode are:
Unit Value + %: (time activity towards set value. 0% means 0 seconds. 100% means 100 seconds.)
pH range: two pH values within PWM operates.
For example: set first pH value at 8.00 = 100% and second pH value at 4.0 = 0%.
For reading values ≥to 8.00 the output will be permanently ON.
For reading values ≤4.0 the output will be permanently OFF.
For reading value of 7.00 the output will be OFF for 25 seconds, ON for 75 seconds.
For reading value of 6.00 the output will be OFF for 50 seconds, ON for 50 seconds.
Proportional Water Meter
Proportional mode can also be set into PROP+WM mode.
This option allows to regulate proportional input based on
flow detected by water meter at set percentual values.
e.g.: reading at 9 will have an output of 50 seconds on and
50 seconds Off (50% on 100 seconds base). Adding the
proportional flow from the water meter with parameters
set between 20 % (at 0mc/h) and 100% (at 8mc/h) results
will be that (as example):
At 4 mc/h will have a working period of 30 seconds ON
and 70 seconds OFF (60% of 90P/m)
60% is the middle value between 20% and 100% for
reading of 4mc/h

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8.5 “PWM” (fixed), pH
This mode is valid for “pH relay” and “pH relay 2” outputs only. Pulse-width modulation (PWM) of a signal or power
source involves the modulation of its duty cycle, to either convey information over a communications channel or
control the amount of power sent to a load. Using fixed mode is possible to set operating time to switch on or off
selected output.
During this time if reading value will move towards a set value (on or off) the PWM will operate the output on
timered basis. Reaching the set value the PWM will permanently leave on (for selected amount of time) or off the
output.
Parameters to set for this mode are:
pH range: two pH values within PWM operates.
Ton: ON period, during output activity.
Toff: OFF period, during output activity.
For example: set first pH value (OFF) at 7.20.. Set second pH value (ON) at 8.00.
Set “working-pause” output activity with Toff 0 seconds and Ton 40 seconds.
For reading values ≥to 8.00 the output will be ON with activity based on Ton and Toff.
For reading values ≤7.20 the output will be permanently OFF.
For reading values within working range operating mode is on HYSTERESIS base. Once reading value is 7.20 pH will be permanently off until it will
reaches 8.00 pH.
7.20 8.00
ON
OFF
Ton: 40 seconds WORK
Toff: 10 seconds PAUSE

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8.5 “PID”, pH
A proportional-integral-derivative controller (PID controller) is a control loop feedback mechanism (controller) widely
used in industrial control systems. A PID controller calculates an error value as the difference between a measured
process variable and a desired setpoint. The controller attempts to minimize the error by adjusting the process
through use of a manipulated variable. The PID controller algorithm involves three separate constant parameters,
and is accordingly sometimes called three-term control: the proportional, the integral and derivative values, denoted
P, I, and D. Simply put, these values can be interpreted in terms of time: P depends on the present error, I on the
accumulation of past errors, and D is a prediction of future errors, based on current rate of change.[1] The weighted
sum of these three actions is used to adjust the process via a control element such as the position of a control valve,
a damper, or the power supplied to a heating element.
To correctly setup PID as working mode configure the following parameters within two menus “SETPOINT MODE
PID” and “PID PARAMETERS”
1) Choose related output to work into PID mode using Setpoint menu
2) Enter RANGE value. Range is the maximum PID value over or under which (depending on pH+ or pH-) the
instrument will automatically switch into proportional mode
3) Enter SETPOINT which is the optimal value to achieve. Move the cursor to OK and save the data.
4) Select “PID PARAMETERS” within SETPOINT submenu
- Choose working mode (+ or -) baed on how setpoint must be reached: starting from lower or higher values.
- Enter INTEGRATIVE value (time needed to the instrument to activate a procedure as answer to a plant’s change. E.G.: time
needed for pump activation when reached a set value. ) Default value: 60 seconds.
- Enter DERIVATIVE value ( time needed to the instrument to react to a plant’s status change. E.G.: if pH value in water
increase, the time integrative is the time needed to notify the change.) Default value: 3 seconds.
- Move curson on OK then click to save settings.

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9. “Probe Calibration”, pH
Full pH calibration procedure involves two calibration points and it requires two buffer solutions. Default buffer
solutions are pH 4.00 and pH 7.00. pH reading value can be also compensated from “pH compensation” menu.
From “Menu Calibration” choose “pH probe”. Fast Calibration procedure involves one point calibration (choose
value closest to real field application).
In the following example instrument will calibrate pH using default buffer solutions values. Note: this procedure
assumes that instrument is correctly congured and a working pH probe connected. Otherwise unattended
results may occurr. When changing pH compensation option, calibration must be repeated.
Calib 1st Point.
Once into “pH Calibration” menu move wheel on “P1” then press wheel to enter into first point calibration
submenu. Prepare 7.00pH buffer solution and dip probe’s sensor on it.Wait until reading value is stable and accor-
ding to buffer solution value move wheel until it is the same on display (“Cal. at” field). Default value is 7.00pH.
To end procedure move cursor on “OK” and press wheel to proceed to next step. Note: buffer solution value may
change if environment temperature it’s different than 20°C. Read solution’s label for more information. Accor-
ding to this occurrence “pH Default” must be changed.
pH7
Calib 2nd Point.
Move wheel on “P2” then press wheel to enter into second point calibration submenu. Prepare 4.00pH buffer so-
lution and dip probe’s sensor on it. Wait until reading value is stable and according to buffer solution value move
wheel until it is the same on display (“Cal. at” field). Default value is 4.00pH.
To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes. Note: buffer solution value may change if environment temperature
it’s different than 20°C. Read solution’s label for more information. According to this occurrence “pH Default”
must be changed.
pH4

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9.1 “Probe Calibration”, °C - Temperature
A professioanl thermometer is required to obtain a reliable calibration. From “Menu Calibration” choose “Temp probe”.
Note: This procedure assumes that instrument is correctly installed and congured, connected to a working
PT100.. Calibrate using plant’s temperature otherwise unattended results may occur.
Using an external thermometer read actual temperature and edit related eld “Cal. at”. Conrm by pressing wheel.
To end procedure move cursor on “OK” and press whe-
el to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes. If an error oc-
curred during calibration procedure then the instrument
will show an error message and will ask to proceed to a
new calibration, cancel current operation or restore de-
fault settings.

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10. “Parameters”
From “Menu Calibration” choose “Parameters”. This menu allows to set a delay (max 60 minutes) before pumps begin
to feed. Furthermore use this menu to set pH pump startup priority and to change default passcode.
Feeding Delay.
Move on “Feeding Delay” then press wheel. Choose a value between 0 (disabled) and 60 minutes (maximum delay
time). This feature can be used to accord a startup delay for the pumps. Delay occurs when instrument is powered.
Mode.
Move on “Mode” then press wheel. If both pumps need to operate, a startup priority can be set to allow the pH pump to
begin to feed prior to Cl pump. Choose “pH priority” to enable this function. Cl pump will begin to dose when pH pump
has stopped.
Tau.
If probes reading values are changing too fast increase TAU value to stabilize them. Default value is 05. Maximum
value is 30.
New Pcode.
See page 10.
To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES” to
save or “NO” to discard changes.

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11. “Output Manager”
From “Menu Calibration” choose “Output Manager”. This menu allows to manually operate all outputs for a
settable time. Set to “AUTO” for normal operating mode. Set to “OFF” to permanently disable outputs.
Press wheel to move cursor on “TIME” field. Once here, choose a working time between 0 (disabled) or 199
minutes. Move on “EXIT”, then press wheel.
Choose “YES” to save changes. Exit from main menu. Main display will show a countdown for selected output.
To stop this countdown go back to “Output Manager” menu and choose “AUTO” as working mode or wait until
countdown ends. This function can be used for priming purposes.

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12. “Instrument Reset”
“Instrument Reset” menu allows user to reset several parameters (channel, temperature, instrument and setpoint)
Press wheel then change value to restore (multiple choises are allowed) to “ON”, press wheel again, move on “OK”
then finally press wheel. The instrument will go back to main menu and values will be restored.

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13. “Dosing Alarm”
Use this menu to assign a maximum time to the pumps for reaching the setpoint. If set time ends and the pumps
are still dosing, within this menu is possible to STOP them or just to show an alarm message. Function can be
disabled selecting “OFF” instead of a number (minutes). Dosing alarm can be set for both or just one pump.
E.g. To set Cl pump to stop after time ends and setpoint isn’t still reached press wheel, choose maximum time,
press wheel move on next field and choose “STOP”. Time can be set between 0 and 100 minutes. When satisfied
with settings move on exit and press wheel.
To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES”
to save or “NO” to discard changes.

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14. “International”
Use this menu to set international parameters as UNIT FORMAT (Europe IS or USA), Local Time and Date.
Format.
Use this option to use European or USA units format. See table for differencies.
EUROPE IS (Internationl Standard) USA
Date (DD/MMM/YY) Date (MMM/DD/YY)
Time 24h Time AM / PM
°C °F
Time.
Use this option to set local time.
Date.
Use this option to set date.
Move on exit to end changes.
To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes.