Fluidwell F124-P User manual

F124-P
Ratio controller
Signal input flowmeter: pulse, Namur and coil.
Control output: (0)4-20mA/ 0-10V.
Alarm outputs: high / low ratio alarm.
Options: Intrinsically Safe, Modbus communication and backlight.
F-Series - Field mounted indicators for safe and hazardous areas. More info: www.fluidwell.com/fseries

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SAFETY INSTRUCTIONS
Any responsibility is lapsed if the instructions and procedures as described in this
manual are not followed.
LIFE SUPPORT APPLICATIONS: The F124-P is not designed for use in life support
appliances, devices, or systems where malfunction of the product can reasonably be
expected to result in a personal injury. Customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify the
manufacturer and supplier for any damages resulting from such improper use or sale.
Electro static discharge does inflict irreparable damage to electronics! Before installing
or opening the unit, the installer has to discharge himself by touching a well-grounded
object.
This unit must be installed in accordance with the EMC guidelines (Electro Magnetic
Compatibility).
Do connect a proper grounding to the aluminum casing as indicated if the F124-P has
been supplied with the 115-230V AC power-supply type PM. The green / yellow wire
between the back-casing and removable terminal-block may never be removed.
Intrinsically Safe applications: follow the instructions as mentioned in Chapter 5 and
consult “Fluidwell F1..-..-XI - Documentation for Intrinsic Safety”.
DISPOSAL
At the end of its life this product should be disposed of according to local regulations regarding
waste electronic equipment. If a battery is present in this product it should be disposed of
separately. The separate collection and recycling of your waste equipment will help to conserve
natural resources and ensure that it is recycled in a manner that protects the environment.
SAFETY RULES AND PRECAUTIONARY MEASURES
The manufacturer accepts no responsibility whatsoever if the following safety rules and
precautions instructions and the procedures as described in this manual are not followed.
Modifications of the F124-P implemented without preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty period.
Installation, use, maintenance and servicing of this equipment must be carried out by authorized
technicians.
Check the mains voltage and information on the manufacturer's plate before installing the unit.
Check all connections, settings and technical specifications of the various peripheral devices
with the F124-P supplied.
Open the casing only if all leads are free of potential.
Never touch the electronic components (ESD sensitivity).
Never expose the system to heavier conditions than allowed according to the casing
classification (see manufacture's plate and chapter 4.2.).
If the operator detects errors or dangers, or disagrees with the safety precautions taken, then
inform the owner or principal responsible.
The local labor and safety laws and regulations must be adhered to.

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ABOUT THE OPERATION MANUAL
This operation manual is divided into two main sections:
The daily use of the unit is described in chapter 2 "Operation". These instructions are meant for
users.
The following chapters and appendices are exclusively meant for electricians/technicians. These
provide a detailed description of all software settings and hardware installation guidance.
This operation manual describes the standard unit as well as most of the options available. For
additional information, please contact your supplier.
A hazardous situation may occur if the F124-P is not used for the purpose it was designed for
or is used incorrectly. Please carefully note the information in this operating manual
indicated by the pictograms:
A "warning" indicates actions or procedures which, if not performed correctly, may lead to
personal injury, a safety hazard or damage of the F124-P or connected instruments.
A "caution" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the F124-P or connected instruments.
A "note" indicates actions or procedures which, if not performed correctly, may indirectly
affect operation or may lead to an instrument response which is not planned.
Hardware version: 02.01.xx
Software version: 02.05.xx
Manual : HF124PEN_v0501_04
© Copyright 2011 Fluidwell bv - The Netherlands.
Information in this manual is subject to change without prior notice. The
manufacturer is not responsible for mistakes in this material or for incidental
damage caused as a direct or indirect result of the delivery, performance or
use of this material.
© All rights reserved. No parts of this publication may be reproduced or used
in any form or by any means without written permission of your supplier.

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CONTENTS MANUAL
Safety instructions ........................................................................................................................................... 2
Disposal .................................................................................................................................................... 2
Safety rules and precautionary measures ....................................................................................................... 2
About the operation manual ............................................................................................................................ 3
Contents manual.............................................................................................................................................. 4
1. Introduction ................................................................................................................................. 5
1.1. System description of the F124-P.......................................................................................... 5
2. Operational.................................................................................................................................. 7
2.1. General .................................................................................................................................. 7
2.2. Control panel.......................................................................................................................... 7
2.3. Operator information and functions ....................................................................................... 8
3. Configuration............................................................................................................................. 11
3.1. Introduction .......................................................................................................................... 11
3.2. Programming SETUP-level.................................................................................................. 11
3.2.1. General ................................................................................................................................ 11
3.2.2. Overview functions SETUP level ......................................................................................... 14
3.2.3. Explanation OF SETUP-functions........................................................................................ 15
1 - Flowrate “A” ............................................................................................................... 15
2 - Flowrate “B” .............................................................................................................. 16
3 - Setpoint...................................................................................................................... 16
4 - control ........................................................................................................................ 16
5 - Alarm ......................................................................................................................... 17
6 - Power management .................................................................................................. 17
7 - Flowmeter .................................................................................................................. 18
8 - Analog output............................................................................................................. 19
9 - Communication (optional).......................................................................................... 20
A - Others........................................................................................................................ 20
4. Installation ................................................................................................................................. 21
4.1. General directions................................................................................................................ 21
4.2. Installation / surrounding conditions .................................................................................... 21
4.3. Dimensions- Enclosure ........................................................................................................ 22
4.4. Installing the hardware......................................................................................................... 24
4.4.1. Introduction .......................................................................................................................... 24
4.4.2. Voltage selection sensor supply ............................................................................................... 25
4.4.3. Terminal connectors ............................................................................................................ 26
5. Intrinsically safe applications..................................................................................................... 35
5.1. General information and instructions ................................................................................... 35
5.2. Terminal connectors Intrinsically Safe applications ............................................................. 36
5.4 Battery replacement instructions.......................................................................................... 40
6. Maintenance.............................................................................................................................. 41
6.1. General directions................................................................................................................ 41
6.2. Repair................................................................................................................................... 41
Appendix A: Technical specification .............................................................................................................. 42
Appendix B: Problem solving......................................................................................................................... 45
Appendix C: Communication variables.......................................................................................................... 45
Index of this manual....................................................................................................................................... 46
List of figures in this manual .......................................................................................................................... 47

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1. INTRODUCTION
1.1. SYSTEM DESCRIPTION OF THE F124-P
Functions and features
The PI ratio controller model F124-P is a microprocessor driven instrument designed to control the
ratio between two flows.
This product has been designed with a focus on:
ultra-low power consumption to allow long-life battery powered applications (type PB / PC),
intrinsic safety for use in hazardous applications (type XI),
several mounting possibilities with aluminum or GRP enclosures for harsh industrial
surroundings,
ability to process all types of flowmeter signals,
transmitting possibilities with communication option,
Flowmeter input
This manual describes the unit with a pulse type input from the flowmeter "-P version". Other
versions are available to process (0)4-20mA or 0-10V flowmeter signals.
One flowmeter with a passive or active pulse, Namur or sine wave (coil) signal output can be
connected to the F124-P. To power the sensor, several options are available.
Standard outputs
Configurable linear (0)4-20mA or 0-10V analog output with 10-bits resolution to control a valve
or pump.
Two alarm outputs: high and low ratio alarm.
Overview typical application F124
(0)4-20mA / 0-10V
control output
RS232/RS485
Modbus
(option)
R1:
alarm output
LOW ratio
R2:
alarm output
HIGH ratio
external safety input
Fig. 1: Typical application for the F124-P.

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Configuration of the unit
The F124-P was designed to be implemented in many types of applications. For that reason, a
SETUP-level is available to configure your F124-P according to your specific requirements.
SETUP includes several important features, such as K-factors, measurement units, signal selection
etc. All setting are stored in EEPROM memory and will not be lost in the event of power failure or a
drained battery.
To extend the battery-life time (option), please make use of the power-management functions as
described in chapter 3.2.3.
Display information
The unit has a large transflective LCD with all kinds of symbols and digits to display measuring units,
status information, trend-indication and key-word messages.
Options
The following options are available: isolated or active 4-20mA / 0-10V / 0-20mA analog output, full
Modbus communication RS232/485/TTL (also battery powered), intrinsic safety, power- and sensor-
supply options, panel-mount, wall-mount and weather-proof enclosures, flame proof enclosure and
LED backlight.

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2. OPERATIONAL
2.1. GENERAL
The F124-P may only be operated by personnel who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
Take careful notice of the " Safety rules, instructions and precautionary measures " in
the front of this manual.
This chapter describes the daily use of the F124-P. This instruction is meant for users / operators.
2.2. CONTROL PANEL
The following keys are available:
Fig. 2: Control Panel.
Functions of the keys
This key is used to program and save new values or settings and to enter the
operator mode menu.
It is also used to gain access to SETUP-level; please read chapter 3.
The arrow-key is used to increase a value after PROG has been pressed
or to configure the unit; please read chapter 3.
The arrow-key is used is used to decrease a value after PROG has been pressed
while > is used to select a digit or SETUP function.
SELECT
PROG
ENTER
SELECT

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2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the F124-P will always act at Operator level. The information displayed is dependant
upon the SETUP-settings. All pulses generated by the connected flowmeter are measured by the
F124-P in the background, whichever screen refresh rate setting is chosen. After pressing a key, the
display will be updated very quickly during a 30 second period, after which it will slow-down again.
Fig. 3: Example of display information during process.
Operation:
The IP algorithm used in the F124-P :
Only the Integral action works at a set-point change, so there is no aggressive change in the control
output even when the set-point is changed in steps. In this way the control method produces stable
control, but react not as quick as a normal PI controller.
Selection and programming Operation mode:
By pressing the PROG-button, “Control” is displayed and the following operation modes can
be selected: Hand, Local and Ratio.
After selecting a mode, the control operation is displayed at the bottom line as well as the
actual set-point.
The value is changed directly from the keyboard by using the “” UP-button and the “”
DOWN-button. The longer you press the button, the quicker the value change.
“Hand” mode
In this mode the control output (CO) can be manipulated directly. In the “Hand” mode,
there is no loop connection between flow A and B.
In the “hand” mode, 0% correspondents with the minimum output signal (most
applications 4mA) and 100% with the maximum output signal (20mA).
The top line displays the calculated ratio between flow A and B (flow B / flow A).
I-action Process
P-action
Setpoint
PV
PV
-
+
RUN

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“Local” mode
In this mode the local set-point B can be set, corresponding with the process value of flow
transmitter B (additive). The set-point can be changed, using the “” button (UP) and the
“” button (down).
Both set-point and process value are displayed as a percentage.
Remark : In this mode the single loop of flow B can be controlled and is ideal to tune the
ratio controller (PI values corresponding to the process).
“Ratio” mode
This mode is used during normal operation. Using the “” button (UP) and the “” button
(down) to set the desired ratio as percentage.
The process value corresponds with flow B / flow A. Flowrate B will be controlled in
relation to flowrate A. The top-line displays the actual ratio as a percentage.
Run / Safety mode
Via an external input closure the control output can be set to a predefined value.
During this safety mode, the message “SAFETY” is displayed.
Selection actual flowrate A and flowrate B:
Press shortly the “PROG” and the “” button simultaneously to display the actual
flowrate A. Flowrate B is selected by pressing the “SELECT” button.
Selection and programming the ratio alarm values
Note: This function might not be accessible or visible due to a configuration settings.
Press shortly the “PROG” and the “” button simultaneously. Use the “SELECT” button to
select the actual ratio alarm values. The ratio HI and ratio LO alarm values are displayed and
set as a percentage (%).
To change the alarm value, the following procedure must be executed:
1) press PROG: the word "PROGRAM" will flash,
2) use to select the digits and to increase that value,
3) confirm the new alarm value by pressing ENTER.
Fig. 4: Example of display information during programming minimum ratio alarm.
When data is altered but ENTER has not been pressed yet, then the alteration can still be
cancelled by waiting for 20 seconds or by pressing ENTER during three seconds: the former
value will be reinstated.
Ratio alarm
When the actual ratio is outside the allowed range, an alarm message will be displayed
indicating the type of alarm: "LO RATIO" or "HI RATIO".
The alarm is terminated automatically as soon as the ratio is within its range again.
RUNSET-UP
A
LARMPROGRAMREADY

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Low-battery alarm
When the battery voltage drops, it must be replaced. At first "low-battery" will flash, but as
soon as it is displayed continuously, the battery MUST be replaced shortly after!
Only original batteries supplied by the manufacturer may be used, else the guarantee and
liability will be terminated. The remaining lifetime after the first moment of indication is
generally several days up to some weeks.
Fig. 5: Example of low-battery alarm.
•Alarm 01-03
When "alarm" is displayed, please consult Appendix B: problem solving.
RUN
LOW BATTERY

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3. CONFIGURATION
3.1. INTRODUCTION
This and the following chapters are exclusively meant for electricians and non-operators. In these,
an extensive description of all software settings and hardware connections are provided.
Mounting, electrical installation, start-up and maintenance of the instrument may only
be carried out by trained personnel authorized by the operator of the facility. Personnel
must read and understand this Operating Manual before carrying out its instructions.
The F124-P may only be operated by personnel who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
Ensure that the measuring system is correctly wired up according to the wiring
diagrams. The housing may only be opened by trained personnel.
Take careful notice of the " Safety rules, instructions and precautionary measures " in
the front of this manual.
3.2. PROGRAMMING SETUP-LEVEL
3.2.1. GENERAL
Configuration of the F124-P is done at SETUP-level. SETUP-level is reached by pressing the
PROG/ENTER key for 7 seconds; at which time, both arrows will be displayed. In order to return
to the operator level, PROG will have to be pressed for three seconds. Alternatively, if no keys are
pressed for 2 minutes, the unit will exit SETUP automatically.
SETUP can be reached at all times while the F124-P remains fully operational.
Note: A pass code may be required to enter SETUP. Without this pass code access to SETUP is
denied.
To enter SETUP-level:

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Matrix structure SETUP-level:
SCROLLING THROUGH SETUP-LEVEL
Selection of function-group and function:
SETUP is divided into several function groups and functions.
SELECT
Select function-group with
Select function with
Each function has a unique number, which is displayed below the word "SETUP" at the bottom of
the display. The number is a combination of two figures. The first figure indicates the function-group
and the second figure the sub-function. Additionally, each function is expressed with a keyword.
After selecting a sub-function, the next main function is selected by scrolling through all "active" sub-
functions (e.g. 1, 11, 12, 13, 14, 1, 2, 3, 31 etc.).

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To change or select a value:
PROG
ENTER
PROG
ENTER
a) press briefly; will start flash
b) select or enter value with and / or
c) press to confirm the value / selection.
a)
c)
b) b)
PROGRAM
SELECT
To change a value, use to select the digits and to increase that value.
To select a setting, both and can be used.
If the new value is invalid, the increase signor decrease-signwill be displayed while you are
programming.
When data is altered but ENTER is not pressed, then the alteration can still be cancelled by waiting
for 20 seconds or by pressing ENTER for three seconds: the PROG-procedure will be left
automatically and the former value reinstated.
Note: alterations will only be set after ENTER has been pressed!
To return to OPERATOR-level:
In order to return to the operator level, PROG will have to be pressed for three seconds. Also, when
no keys are pressed for 2 minutes, SETUP will be left automatically.

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3.2.2. OVERVIEW FUNCTIONS SETUP LEVEL
SETUP FUNCTIONS AND VARIABLES
1 FLOWRATE
A
11 UNIT mL, L, m3, mg, g, kg, ton, GAL, bbl, lb, cf, rev, no unit
12 TIME UNIT sec - min - hour - day
13 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
14 K-FACTOR 0.00001 - 9,999,999
15 DECIMALS K-FACTOR 0 - 6
16 PERIOD 0.1 - 99.9 seconds
2 FLOWRATE B
21 K-FACTOR 0.00001 - 9,999,999
22 DECIMALS K-FACTOR 0 - 6
23 PV MIN - FLOW B (0%) 0.001 - 9,999,999 (UNIT / TIME UNIT)
24 PV MAX - FLOW B (100%) 0.001 - 9,999,999 (UNIT / TIME UNIT)
3 SETPOINT
31 DECIMALS SV RATIO 0 - 1 - 2 (Ref: displayed value)
32 SV MIN - RATIO LIMIT LO
(set-point)
0.0 - 100.0 %
33 SV MAX - RATIO LIMIT HI
(set-point)
0.0 - 100.0 %
4 CONTROL
41 ACTION Direct - reverse
42 PB (Proportional band) PCT 0.0 - 999.9 %
43 IT (Integration time) SEC 0.0 - 6000.0 seconds
44 STARTUP Continue – Hand – Safety
5 ALARM
51 ALARMSET operate - setup - hidden - disable
52 FLOWZERO default - no relays - ignore
53 RATIO ALARM LO (Measure) 0.0 - 100.0 %
54 RATIO ALARM HI (Measure) 0.0 - 100.0 %
55 DELAY RATIO LO 0.0 - 999.9 seconds
56 DELAY RATIO HI 0.0 - 999.9 seconds
6 POWER MANAGEMENT
61 LCD UPDATE fast - 1 sec - 3 sec - 15 sec - 30 sec - off
62 BATTERY MODE operational - shelf
7 FLOWMETE
R
71 SIGNAL A npn - npn_lp - reed - reed_lp - pnp - pnp_lp - namur - coil_hi -
coil_lo - act_8.1 - act_12 - act_24
72 SIGNAL B npn - npn_lp - reed - reed_lp - pnp - pnp_lp - namur - coil_hi -
coil_lo - act_8.1 - act_12 - act_24
8 ANALOG OUTPUT
–
CO (CONTROL OUTPUT)
81 CO MIN - Low limit 0.0 - 100.0 %
82 CO MAX - High limit 0.0 - 100.0 %
83 CO SAFE - safety value 0.0 - 100.0 %
84 TUNE MIN - 4mA / 0V 0 - 9,999 (=0%)
85 TUNE MAX- 20mA / 10V 0 - 9,999 (=100%)
9 COMMUNICATION
91 SPEED / BAUDRATE 1200 - 2400 - 4800 - 9600
92 ADDRESS 1 - 255
93 MODE RTU - off
A OTHERS
A1 TYPE / MODEL F124-P
A2 SOFTWARE VERSION xx.xx.xx
A3 SERIAL NO. Xxxxxxx
A4 PASSWORD 0000 – 9999
A5 TAGNUMBER 0000000 – 9999999

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3.2.3. EXPLANATION OF SETUP-FUNCTIONS
1 - FLOWRATE “A”
The settings for flowrate A (main flow) and flowrate B (additive) are common, with the exception of
the K-Factor settings.
MEASUREMENT UNIT
11 SETUP - 11 determines the measurement unit for flowrate for flow A:
mL, L, m3, mg, g, kg, ton, GAL, bbl, lb, cf, rev, no unit,
SCF, nm3, nL, P
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the K-factor has to be adapted as well; the calculation is
not done automatically.
TIME UNIT
12 The flowrate can be calculated per second (SEC), minute (MIN), hour
(HR) or day (DAY).
DECIMALS
13 This setting determines for flowrate the number of digits following the
decimal point for flow A. The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
K-FACTOR
14 With the K-factor, the flowmeter pulse signals are converted to a flowrate.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 11), for example per
liter. The more accurate the K-factor, the more accurate the functioning of
the system will be.
Example 1: Calculating the K-factor.
Let us assume that the flowmeter generates 2.4813 pulses per
liter and the selected unit is "cubic meters / m3". A cubic meter
consists of 1000 parts of one liter which implies 2,481.3 pulses
per m3. So, the K-factor is 2,481.3. Enter for SETUP 24:
"2481300" and for SETUP 25 decimals K-factor "3".
Example 2: Calculating the K-factor.
Let us assume that the flowmeter generates 6.5231 pulses per
gallon and the selected measurement unit is gallons. So, the K-
Factor is 6.5231. Enter for SETUP 24: "6523100" and for
SETUP 25 decimals K-factor: "6".
DECIMALS K-FACTOR
15 This setting determines the number of decimals for the K-factor
(SETUP 14). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the K-factor
indirectly.
This setting has NO influence on the displayed number of digits for
"flowrate" (SETUP 13)!
PERIOD
16 The flowrate is calculated by counting the number of pulses within a
certain time, for example 1 second. The longer the time the more accurate
the flowrate will be. The maximum value is 999.9 seconds.
Note: this setting does influence the update time for the analog output
directly (maximum update 10 times a second). If the output response is
too slow, decrease the time.

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2 - FLOWRATE “B”
K-FACTOR
21 With the K-factor, the flowmeter pulse signals are converted to a flowrate.
The K-factor is based on the number of pulses generated by the
flowmeter per selected measurement unit (SETUP 11), for example per
liter. The more accurate the K-factor, the more accurate the functioning of
the system will be. For examples read SETUP 14.
DECIMALS K-FACTOR
22 This setting determines the number of decimals for the K-factor
(SETUP 24). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the K-factor
indirectly.
Below settings for conditioning Flow B between 0 and 100%.
PV MIN
FLOW B MIN (0%)
23
This setting defines the minimum flow rate (additive flow B) for the
“Local and Ratio mode”. The value has to be entered in engineering units
according to setup 11 and 12.
PV MAX
FLOW B MAX (100%)
24
This setting defines the maximum flow rate (additive flow B) for the
“Local and Ratio mode”. The value has to be entered in engineering units
according to setup 11 and 12.
3 - SETPOINT
Below settings for the local and ratio mode.
DECIMALS SV RATIO
31 This setting determines for ratio setpoint (SV) the number of digits
following the decimal point. The following can be selected:
00000 - 1111.1 - 2222.22
SV MIN
RATIO LIMIT LO
(SETPOINT)
32
This setting determines lowest allowed set-point for the “ratio mode”:
0.0 - 100.0 % (usually 0%).
SV MAX
RATIO LIMIT HI
(SETPOINT)
33
This setting determines maximum allowed set-point for the “ratio mode”:
0.0 - 100.0 %
4 - CONTROL
Below settings for the PI algorithm used in the Fluidwell F124-P:
CONTROL ACTION
(ACTION)
41
Enter here how the control action should be defined: Direct – reverse
Direct: if process value PV increases, the control output CO
increases as well.
Reverse: if process value PV increases, the control output CO
decreases.
PROPORTIONAL
BAND
(PB PCT)
42
The proportional band describes the process value variation span, which
is expressed as a percentage (%) and is required to change the control
output from 0 – 100%.
Setting range: 0.1 to 999.9 %
INTEGRATION TIME
I-TIME
(IT SEC)
43
An integral action continually increases and decreases the output in
proportion to the integrated to the integrated deviation.
Setting range : 0.0 – 6000.0 seconds (value 0.0 seconds disables this
function)
STARTUP
44 This function allows the F124-P to start-up after a power-shutdown in a
safe mode. Three selections can be made:
Safety: it continues with the safety value as programmed with
SETUP 83.
Hand: it continues with the last value as entered in the
Hand-mode.
Continue: it remains with the last control mode at the moment of
power shutdown.

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5 - ALARM
With these settings, it is determined if and how the ratio will be monitored.
SET ALARM
51 This function determines if and how the ratio alarm values can be set:
Following can be selected:
Operate: the values can be set at both Operator and SETUP-level.
Setup: the values can be set at SETUP level only, but are visible
for the operator.
Hidden: the ratio alarm values are not visible for the operator, only
the alarm warning.
Disable: there is no ratio monitoring.
FLOW ZERO
52 When the flowrate of both flows is zero, then it is possible to ignore or
disable the ratio monitoring. The following settings can be selected:
DEFAULT: in case of a low-ratio alarm and zero flow, it will switch the
alarm output and indicate the alarm on the display.
NO RELAY: in case of a low-ratio alarm and zero flow, it won't switch
the alarm output but will indicate it on the display only.
IGNORE: in case of a low-ratio alarm and zero flow the alarm will be
ignored.
ALARM VALUE
RATIO LOW
53
The low alarm is set as a % with this setting. An alarm will be generated
as long as the ratio lower as this value.
With value 0.0 this function is disabled.
ALARM VALUE
RATIO HIGH
54
The high alarm is set as a % with this setting. An alarm will be generated
as long as the ratio higher as this value.
With value 0.0 this function is disabled.
DELAY TIME ALARM
RATIO LOW
55
An alarm generated by SETUP 33 “low” can be ignored during X-time
period. If the actual ratio is still incorrect after this delay time, than an
alarm will be generated.
DELAY TIME ALARM
RATIO HIGH
56
An alarm generated by SETUP 34 “high” can be ignored during X-time
period. If the actual ratio is still incorrect after this delay time, than an
alarm will be generated.
6 - POWER MANAGEMENT
When used with the internal battery option, the user can expect reliable measurement over a long
period of time. The F124-P has several smart power management functions to extend the battery life
time significantly. Two of these functions can be set:
LCD NEW
61 The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display update, it is strongly advised to select a slow refresh rate.
Please understand that NO information will be lost; every pulse will be
counted and the output signals will be generated in the normal way.
The following can be selected:
Fast - 1 sec - 3 sec - 15 sec - 30 sec - off.
Example: Battery life-time
battery life-time with a coil pick-up, 1KHz. pulses and FAST
update: about 2 years.
battery life-time with a coil pick-up, 1KHz. pulses and 1 sec
update: about 5 years.
Note: after a button has been pressed by the operator - the display
refresh rate will always switch to FAST for 30 seconds. When "OFF" is
selected, the display will be switched off after 30 seconds and will be
switched on as soon as a button has been pressed.
BATTERY-MODE
62 The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not count pulses, the display is switched off but all settings and totals
are stored. In this mode, power consumption is extremely low.
To wake up the unit again, press the SELECT-key twice.

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7 - FLOWMETER
SIGNAL A
71 The F124-P is able to handle several types of input signal.
The type of flowmeter pickup / signal for input A “main flow” is selected
with SETUP 71.
Note: The selections "active pulse" offer a detection level of 50% of the
supply voltage.
Read also par. 4.4.3. Flowmeter input terminal 09-11.
SIGNAL B
72 The F124-P is able to handle several types of input signal.
The type of flowmeter pickup / signal for input B “additive” is selected with
SETUP 72.
Note: The selections "active pulse" offer a detection level of 50% of the
supply voltage.
Read also par. 4.4.3. Flowmeter input terminal 12-14.
TYPE OF SIGNAL EXPLANATION RESISTANCE FREQ./MVREMARK
NPN NPN input 100K
pull-up 6 kHz. (open collector)
NPN - LP NPN input
with low pass filter 100K pull-up 2.2 kHz. (open collector)
less sensitive
REED Reed-switch input 1M
pull-up 1.2 kHz.
REED - LP Reed-switch input
with low pass filter 1M pull-up 120 Hz. Less sensitive
PNP PNP input 100K
pull-down 6 kHz.
PNP - LP PNP input
with low pass filter 100K pull-down 700 Hz. Less sensitive
NAMUR Namur input 820 Ohm
pull-down 4 kHz. External power
required
COIL HI High sensitive coil input - 20mV
p.t.p. Sensitive for disturbance!
COIL LO Low sensitive coil input - 90mV
p.t.p. Normal sensitivity
ACT_8.1 Active pulse input
8.1 VDC 3K9 10KHz.
External power
required
ACT_12 Active pulse input
12 VDC 4K 10KHz.
External power
required
ACT_24 Active pulse input
24 VDC 3K 10KHz.
External power
required

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8 - ANALOG OUTPUT
A linear analog (0)4-20mA / 0-10V signal is generated to control the ratio between flow A and B.
The range of the analog output is set with the following functions:
CONTROL OUTPUT
CO MIN - LOW LIMIT
81
With this function, the value for the minimum control output is set.
The value has to be entered as a percentage of the maximum output
value as tuned with setting 84 / 85.
Example: 10% means that the output value will not come below be 5.6mA
for example.
CONTROL OUTPUT
CO MAX - HIGH LIMIT)
82
With this function, the value for the maximum control output is set.
The value has to be entered as a percentage of the maximum output
value as tuned with setting 84 / 85.
Example: 90% means that the output value will not come above be
18.4mA for example.
CONTROL OUTPUT
SAFETY
83
With the external input (terminals 15-16), the safety mode can be
enabled. With this setting the control output value is defined for the safety
mode. As long as the contact is made, this value will be transmitted. After
releasing, the former value and function will be reinstalled.
The value has to be entered as a percentage of the maximum output
value as tuned with setting 84 / 85.
Example: 50% means that the safety output will be 12mA for example.
TUNE MIN / 4MA
84 The initial minimum analog output value is (0)4mA or 0V. However, this
value might differ slightly due to external influences such as temperature
for example. The (0)4mA or 0V value can be tuned precisely with this
setting.
Before tuning the signal, be sure that the analog signal is not
being used for any application!
After pressing PROG, the current will be about 4mA (or 0mA / 0V). The
current can be increased / decreased with the arrow-keys and is directly
active. Press ENTER to store the new value.
Remark: the analog output value can be programmed “up-side-down” if
desired, so 20mA at minimum flowrate for example!
TUNE MAX / 20MA
85 The initial maximum analog output value is 20mA (or 10V). However, this
value might differ slightly due to external influences such as temperature
for example. The 20mA value (or 10V) can be tuned precisely with this
setting.
Before tuning the signal, be sure that the analog signal is not
being used for any application!
After pressing PROG, the current will be about 20mA. The current can be
increased / decreased with the arrow-keys and is directly active. Press
ENTER to store the new value.
Remark: the analog output value can be programmed “up-side-down” if
desired, so 4mA at maximum flowrate for example!

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9 - COMMUNICATION (OPTIONAL)
The functions described below deal with hardware that is not part of the standard delivery.
Programming of these functions does not have any effect if this hardware has not been installed.
Consult Appendix C and the Modbus communication protocol description for a detailed explanation.
BAUDRATE
91 For external control, the following communication speeds can be selected:
1200 - 2400 - 4800 - 9600 baud
BUS ADDRESS
92 For communication purposes, a unique identity can be attributed to every
F124-P-P. This address can vary from 1-255.
MODE
93 The communication protocol is Modbus RTU mode.
Select OFF, to disable this communication function.
A - OTHERS
TYPE OF MODEL
A1 For support and maintenance it is important to have information about the
characteristics of the F124-P.
Your supplier will ask for this information in the case of a serious
breakdown or to assess the suitability of your model for upgrade
considerations.
VERSION SOFTWARE
A2 For support and maintenance it is important to have information about the
characteristics of the F124-P.
Your supplier will ask for this information in the case of a serious
breakdown or to assess the suitability of your model for upgrade
considerations.
SERIAL NUMBER
A3 For support and maintenance it is important to have information about the
characteristics of the F124-P.
Your supplier will ask for this information in the case of a serious
breakdown or to assess the suitability of your model for upgrade
considerations.
PASS CODE
A4 All SETUP-values can be pass code protected.
This protection is disabled with value 0000 (zero).
Up to and including 4 digits can be programmed, for example 1234.
TAGNUMBER
A5 For identification of the unit and communication purposes, a unique tag
number of maximum 7 digits can be entered.