Buhler BCM-W Owner's manual

Fluidcontrol
Installation and Operation Instructions
Original instructions
Oil Moisture Sensor
BCM-W
BE150101
12/2021
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
E-Mail: [email protected]
Internet: www.buehler-technologies.com

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
Internet: www.buehler-technologies.com
E-Mail: [email protected]
Read this instruction carefully prior to installation and/or use. Pay at-
tention particularly to all advises and safety instructions to prevent in-
juries. Bühler Technologies can not be held responsible for misusing
the product or unreliable function due to unauthorised modifications.
All rights reserved. Bühler Technologies GmbH 2023
Document information
Document No............................................................BE150101
Version.......................................................................... 12/2021

BCM-W
Contents
1 Introduction.....................................................................................................................................................................................................................2
1.1 Intended Use.........................................................................................................................................................................................................2
1.2 Functionality.........................................................................................................................................................................................................2
1.2.1 Humidity monitoring.......................................................................................................................................................................... 2
1.2.2 Temperature monitor.........................................................................................................................................................................2
1.2.3 IO-Link......................................................................................................................................................................................................2
1.3 Design types..........................................................................................................................................................................................................3
1.4 Model key...............................................................................................................................................................................................................3
1.5 Scope of Delivery.................................................................................................................................................................................................. 3
2 Safety instructions .........................................................................................................................................................................................................4
2.1 Important advice .................................................................................................................................................................................................4
2.2 General hazard warnings ................................................................................................................................................................................. 5
3 Transport and storage ..................................................................................................................................................................................................6
4 Setup and connection ................................................................................................................................................................................................... 7
4.1 Installation ............................................................................................................................................................................................................ 7
4.1.1 Installation recommendation ..........................................................................................................................................................8
4.2 Electrical connections.........................................................................................................................................................................................8
5 Operation and Control..................................................................................................................................................................................................9
5.1 BCM-WD/BCM-WR..............................................................................................................................................................................................9
5.1.1 Start-up procedure ..............................................................................................................................................................................9
5.1.2 LED statuses ...........................................................................................................................................................................................9
5.1.3 General key functions .......................................................................................................................................................................10
5.1.4 Keylock enabled .................................................................................................................................................................................. 10
5.1.5 Menu overview ....................................................................................................................................................................................11
5.1.6 Changing basic settings ................................................................................................................................................................... 12
5.1.7 Switching outputs...............................................................................................................................................................................15
5.1.8 Analogue outputs ............................................................................................................................................................................. 20
5.1.9 Diagnostic options.............................................................................................................................................................................22
5.2 BCM-WS................................................................................................................................................................................................................25
5.2.1 Start-up procedure ............................................................................................................................................................................25
5.2.2 Parameter configuration.................................................................................................................................................................25
5.2.3 Factory setting.....................................................................................................................................................................................25
5.2.4 Switching outputs..............................................................................................................................................................................25
5.2.5 Analogue outputs ..............................................................................................................................................................................25
6 Cleaning and Maintenance.......................................................................................................................................................................................26
7 Service and repair.........................................................................................................................................................................................................27
7.1 Removal information .......................................................................................................................................................................................27
7.2 Troubleshooting ................................................................................................................................................................................................27
7.3 Spare parts and accessories ...........................................................................................................................................................................28
8 Disposal ...........................................................................................................................................................................................................................29
9 Appendices .................................................................................................................................................................................................................... 30
9.1 Technical Data BCM-WS ................................................................................................................................................................................. 30
9.2 Technical Data BCM-WR/BCM-WD ..............................................................................................................................................................32
9.3 Dimensions BCM-WS........................................................................................................................................................................................33
9.4 Outputs BCM-WS...............................................................................................................................................................................................34
9.5 Outputs BCM-WD/BCM-WR...........................................................................................................................................................................34
9.6 Pin assignment BCM-WS.................................................................................................................................................................................34
9.7 Pin assignment BCM-WR/WD ....................................................................................................................................................................... 35
9.8 Display ranges....................................................................................................................................................................................................35
9.9 Current settings.................................................................................................................................................................................................35
9.10 Menu Sequence Overview ..............................................................................................................................................................................36
10 Attached documents ...................................................................................................................................................................................................37
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1 Introduction
1.1 Intended Use
Oil moisture sensors are used to monitor the water content in oils and the temperature. Oil moisture sensors must not be used
in highly flammable or corrosive liquids.
Please note the technical data in the appendix for the specific intended use, existing material combinations, as well as temper-
ature limits.
WARNING
All device models are solely intended for industrial applications. They are not safety com-
ponents. The devices must not be used if failure or malfunction thereof jeopardises the
safety and health of persons.
Use in explosive areas is prohibited.
1.2 Functionality
The sensor determines the relative humidity in oil through water activity (aW). The relative humidity behaves similar to water
activity. Here we can also use the term saturation level of oil. The sensor features a measuring chamber where humid air on the
inside and humidity in the medium become balanced. This puts the sensor in relation to the maximum saturation. So it
provides a degree of the saturation of the oil. Furthermore, the temperature is determined to allow for correcting the values. The
water activity is specified as a factor from 0 to 1. When multiplied by 100% this provides the relative humidity or the saturation
in percent.
The critical limit for saturation depends on several parameters specific to the system. The main advantage, however, is the con-
tinuous monitoring of humidity and temperature. The operating company can therefore make their own determinations on
changes in his system and adjust system parameters where necessary.
1.2.1 Humidity monitoring
The sensor element for determining the humidity is located inside the medium, protected by a tube. The relative humidity can
be continuously output as analog signal or digital signal (IO-Link) or as a switch signal. The threshold is preset and can be con-
figured depending on the model. Depending on the version, there are several switching outputs combined with one analog out-
put (4 - 20mA). The display versions can show the relative humidity in the display and output it to the analog output. The
thresholds for the switching outputs can be freely configured. The sensor versions have the option for analogue output of the re-
lative humidity. The threshold for the switching point is preset and can only be factory configured or via the digital interface.
1.2.2 Temperature monitor
The temperature is monitored via temperature sensor (Pt100) inside the medium, protected by a tube. Depending on the ver-
sion, there are several switching outputs combined with one analog output (4 - 20mA) or digital output (IO-Link). The display
types can display the temperature and output it to the analog output. The sensor types have the option for analogue temperat-
ure output.
Please note the technical data in the appendix.
1.2.3 IO-Link
If the sensor has an IO-Link interface, the identification, process and diagnostics data can be accessed. The sensor parameters
such as switching points or switch-back points can be set during operation. This requires an IO-Link Master with configuration
tool.
When replacing the sensor all previously configured parameters can be transferred to the new sensor.
The sensor has an electronic technical manual, the so-called IODD file. The IODD file contains all information required for system
integration. The file can be downloaded from https://ioddfinder.io-link.com.
For more information please visit: www.io-link.com
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1.3 Design types
The BCM is available as three basic models:
Model Description
BCM-WS Sensor without display
BCM-WD Sensor with display (display built into the sensor)
BCM-WR Combination of sensor and display (display for external installation)
The BCM will have different switching and analogue outputs depending on the configuration. The outputs are freely program-
mable.
The sensor versions are available with digital interface. Here the sensor uses the standardised technology IO-Link, an efficient
point-to-point communication. It uses the previous, proven and tested connection technology. Compatibility with the previous
technology is guaranteed.
1.4 Model key
Model BCM-WS
W
BCM - W S 1 0 -
Humidity
Type designation
Outputs
1S2A 1x switching output / 2x analog
1D Version IO-Link
Sensor
BCM Moisture Sensor
S
Version
Process connection
6Flange (per DIN 24557/T2)
/
0G3/4
2G1/2
Length (only model WS160)
Model BCM-WD/BCM-WR
W Humidity
Type designation Outputs
2S2A
1D1S
4S2A
Display with built-in sensor
Remote display with external sensor
BCM Moisture Sensor
D
R
Version Process connection
G 3/4
0
BCM - W 1 0 0 -
2 x switching output / 2 x analogue
1 x switching output / IO-Link
4 x switching output / 2 x analogue
G 1/22
1.5 Scope of Delivery
– BCM Oil Moisture Sensor
– Product documentation
– Connection/mounting accessories (optional)
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2 Safety instructions
2.1 Important advice
This device may only be used if:
– The product is being used under the conditions described in the operating- and system instructions, used according to the
nameplate and for applications for which it is intended. Any unauthorized modifications to the device will void the warranty
provided by Bühler Technologies GmbH,
– the specifications and markings in the type plate are observed,
– the limits in the data sheet and the instructions must be observed,
– monitoring equipment / protection devices must be connected correctly,
– the device is protected from mechanical damage and vibration,
– service and repairs not described in these instructions is performed by Bühler Technologies GmbH,
– using genuine replacement parts.
These operating instructions are a part of the equipment. The manufacturer reserves the right to change performance-, specific-
ation- or technical data without prior notice. Please keep these instructions for future reference.
Signal words for warnings
DANGER
Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.
WARNING
Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not
avoided.
CAUTION
Signal word for a hazardous situation with low risk, resulting in damaged to the device or the property or
minor or medium injuries if not avoided.
NOTICE
Signal word for important information to the product.
Warning signs
These instructions use the following warning signs:
Warns of a general hazard Unplug from mains
Voltage warning Wear respiratory equipment
Warns not to inhale toxic gasses Wear a safety mask
Warns of corrosive liquids Wear gloves
General information
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2.2 General hazard warnings
The equipment must be installed by a professional familiar with the safety requirements and risks.
Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent
malfunctions and avoid personal injuries and property damage.
The operator of the system must ensure:
– Safety notices and operating instructions are available and observed,
– The respective national accident prevention regulations are observed,
– The permissible data and operational conditions are maintained,
– Safety guards are used and mandatory maintenance is performed,
– Legal regulations are observed during disposal,
– compliance with national installation regulations.
Maintenance, Repair
Please note during maintenance and repairs:
– Repairs to the unit must be performed by Bühler authorised personnel.
– Only perform conversion-, maintenance or installation work described in these operating and installation instructions.
– Always use genuine spare parts.
– Do not install damaged or defective spare part. If necessary, visually inspect prior to installation to determine any obvious
damage to the spare parts.
Always observe the applicable safety and operating regulations in the respective country of use when performing any type of
maintenance.
The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could
damage the device materials.
DANGER Toxic, acidic gases/liquids
Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.
Wear appropriate protective equipment.
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3 Transport and storage
Only transport the product inside the original packaging or a suitable alternative.
The equipment must be protected from moisture and heat when not in use. It must be stored in a covered, dry, dust-free room
at room temperature.
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4 Setup and connection
DANGER Electric voltage
Risk of electric shock
a) De-energise the system.
b) The equipment may only be installed, maintained and put into operation by instruc-
ted, competent personnel.
c) Always observe the applicable safety regulations for the operating site.
DANGER Toxic, acidic gases/liquids
Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.
Wear appropriate protective equipment.
CAUTION Overpressure
Protect the device from static and dynamic overpressures.
Use suitable preventive measures!
4.1 Installation
Before installing the device, ensure the system is depressurised to prevent liquid from escaping. If necessary, use a collection
container.
The BCM comes fully assembled and can be installed in the piping flange connection on a tank housing using the screw-in
thread. When doing so, please ensure the sensor part is always fully bathed by medium to ensure the measured values dis-
played are correct. For built-in versions, use the flow cell, sold separately.
DANGER Electric voltage
Risk of electric shock
When connecting devices, please note the maximum voltages and currents (see tech-
nical data) and use the correct wire cross-sections and circuit breakers.
When selecting the connection lines, also note the maximum operating temperatures of
the devices.
The flange-mounted display units can be swivelled vertically by approx. 270° so they are easier to read. Please note the built-in
swivel stop. You will notice more resistance when reaching the stop. Turning it beyond this stop may damage the display unit.
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4.1.1 Installation recommendation
Proper moisture sensor function requires the entire sensor element to be inside the medium at all times. The sensor version is
suitable for installation at the side of the tank. Here the installation position should be below the minimum liquid level. When
installing into a return pipe, be sure not to exceed the maximum flow rate.
With the BCM-WR version the remote display mounts to a top hat rail.
Installation example:
Assembly block dimensions:
100
G3/4
M8 - 15 deep
70
G1 1/4
80
G1 1/4
50
4.2 Electrical connections
Electricity is supplied via plug connectors. Please refer to the appendix for installation dimensions, nominal voltage and plug
configuration.
The switching outputs are PNP transistors (see illustration):
Supply voltage
Note: When measuring the switching output with high-load measuring device inputs or when used as a frequency output, the
load must be set to 10 kΩ between the output and earth (GND) to avoid faulty measurements.
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5 Operation and Control
NOTICE
The device must not be operated beyond its specifications.
5.1 BCM-WD/BCM-WR
This explanation of operation refers to the versions with display unit.
5.1.1 Start-up procedure
The device will automatically switch on when connected to power. It will first briefly display the software version, at which time
the device will also check the built-in components. The display will then switch to displaying measurements.
The following describes the function of the display and control unit:
LEDs
Control keys
Display
If an error message appears in the display during operation, please refer to the Troubleshooting table under chapter “Service
and Repair”.
5.1.2 LED statuses
LEDs above the measurement display indicate the status of the switching outputs. The LEDs are permanently assigned to the
switching outputs.
The following table lists the factory settings for the liquid level and temperature switching output configuration:
2 switching outputs 4 switching outputs
LED 1 – yellow
Status switching output 1
Humidity Humidity
LED 2 - red
Status switching output 2
Temperature Humidity
LED 3 – yellow
Status switching output 3
--- Temperature
LED 4 – red
Status switching output 4
--- Temperature
The switching characteristics of the LED (on if switching contact closed or open) can be changed.
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5.1.3 General key functions
The keys below the display are used for operation.
The menu controls are detailed in the following chapters.
Key Mode Function
– Measurement display: Change measured variables displayed.
– In the menu: Move down one menu level.
Move up one menu level.
– At the end of the menu:
The display indicates the end of the menu.
– Following input/selection: Confirm and save a numerical value entered or a function selection. The dis-
play will flash if a parameter has been changed.
– Measurement display: Displays the configuration.
– In the menu: Scroll up menu item, numerical value or function selection. Holding the key
will continuously scroll.
– Measurement display: Go to main menu.
– In the menu: Scroll down menu item, numerical value or function selection. Holding the key
will continuously scroll.
+ – In the menu: Exit the main / sub / drop-down menu and return to displaying the measure-
ment without saving changes to the parameters.
+ – In the menu: Move to the next higher menu level.
60 s no action – In the menu: Exit the main / sub/ drop-down menu.
To select a menu item and to enter values:
– Open the main menu with the key.
– Select the submenu with the and keys and open the submenu with the key.
– If necessary, select the next submenu with the and keys and open with the key.
– Select the desired menu item with the and keys and open the list of values with the key.
– Set the value with the and keys and confirm with the key. The new settings will the saved and the device will return
to the submenu.
– Select the menu item EXIT to exit the submenu and confirm with the key. The device will return to the next menu level up
or to the measurement display.
5.1.4 Keylock enabled
With the keylock enabled, selecting the menu with the key will display in place of the main menu. The active
digit will be indicated by a dot.
– Use the and keys to enter the code and confirm with the key. The active digit will move one place to the right. After
entering the 3rd digit the main menu will open.
If the wrong code is entered, the device will return to the measurement display. If you forgot the password you can always enter
master code 287 to access the menu.
You can cancel the keylock under Loc in submenu Basic Settings Advanced Options b.EF and enter 000 to reset the code.
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5.1.5 Menu overview
The menu structure is based on the VDMA standard sheet 24574-1. The menu structure is hierarchic. The top menu level contains
the main menu items, e.g. HuMi, tEMP, b.EF, diA, E. Each main menu contains further submenu items.
The menu items may vary depending on the device configuration. Not all menu items described below will necessarily apply to
your device. Press the key in display mode to open the configuration. A 4-digit code will appear, e.g.
With the 4 digits tsav meaning:
t: Model
s: Number of switching outputs
a: Number of analogue outputs
v: Device installation type
h = humidity and temperature measurement
2 or 4
0 of the 2
i = standard installation (tank installation)
r = remote installation
Configuration
Equipment configuration
H___i
____
HuMi
Display
Measurement display
Humidity
Humidity main menu
out1
Settings menu OUT1
Out 1
out_
Settings menu OUT1
Out x
An 1
Settings menu Analog 1
Analog Out 1
E
Exit menu level
Exit
out_
Settings menu OUTX
Out X
out_
Settings menu OUTX
Out X
An 2
Settings menu Analog 2
Analog Out 2
E
Exit menu level
Exit
tEMP
Temperature main menu
Temperature
b.EF
Basic Adv. Functions
Basic EF
If applicable
If applicable
If applicable
If applicable
If applicable
DiA
Diagnostics menu
Diagnostic
E
Exit menu level
Exit
____
The individual menu items will not be shown if the option does not apply. Example: With a=0 the menu items for configuring
the analogue output does not apply. You can then skip the description for this item.
The structure of the main menus Humidity (HuMi) and Temperature (tEMP) is identical. Here you can configure the switching
outputs or the analogue outputs (if applicable).
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The basic device settings can be changed. General settings can be configured under Basic Settings Advanced Functions (b.EF).
These settings should be configured first, as they affect the displays and settings for the individual menus. These settings are
e.g. the units used and allocating switching outputs for liquid level and temperature measurement. The allocation of the ana-
logue outputs cannot be changed.
The Diagnostic (dia) menu further contains diagnostics options.
For the detailed illustration of the entire menu structure please refer to the original operating instructions at the end of this
chapter.
5.1.6 Changing basic settings
The general basic settings can be changed under menu Basic Settings Extended Functions (bEF). These settings will affect the
measurement display and the configuration options in the various main menus. Here you can also change the switching output
assignment.
– Press the key to open the main menu.
– Select menu item (EF) using the and keys and open the menu with the key.
NOTICE Disabling normal error handling
Disabling normal error handling and analysis could potentially cause dangerous operat-
ing states, dangers to the user or machines. Before using this option, review the hazard
potential within the process. With this setting, Bühler Technologies GmbH assumes no li-
ability for injuries to health or material damage caused by this setting.
5.1.6.1 Restore factory settings (Reset)
Use the Reset function (rES) to restore the factory settings. All changes will be lost. Since this will also reset the limits, you must
check the liquid level and temperature settings.
Basic EF b.EF
Basic Adv. Functions
rES
Factory setting
Reset ___
no - YES
Confirm
The options are:
Original status:
No,
keep current settings
Original status:
Yes,
reset settings to the factory defaults.
The factory settings are:
Definitions:
SP x / rPxSwitching point / switch-back point x
ds x / drxSwitch-on delay / switch-back delay for switching output x
A x ..Hi / Ax.Lo Maximum and minimum measurement for output
A.ou xAnalogue output signal type
ou xSwitching characteristic for switching output x
H.uni / t.uni Humidity / temperature unit
r.ou xSwitching output x liquid level or temperature monitoring allocation
dis Display refresh rate
Loc Keylock
SJ.ou Switching output logged
dH.MM Delay for recording the minimum / maximum humidity
dt.MM Delay for recording the minimum / maximum temperature
Note: For customer-specific specifications the factory preset may vary from those listed here.
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Version with 2 switching outputs:
Switching outputs Basic Settings
SP1 / rP1 80% / 75%Err.h YES
ds1 / dr1 / ou1 0 / 0 / Hno H.uni -I- (%)
SP2 / rP2 60 / 55°C t.uni °C
ds2 / dr2 / ou2 0 / 0 / Hno r.ou1 HuMi
r.ou2 tEMP
dis FASt
Loc 000
Version with 4 switching outputs:
Switching outputs Basic Settings
SP1 / rP1 80% / 75%Err.h YES
ds1 / dr1 / ou1 0 / 0 / Hno H.uni -I- (%)
SP2 / rP2 60% / 55%t.uni °C
ds2 / dr2 / ou2 0 / 0 / Hno r.ou1 HuMi
SP3 / rP3 70 / 65 °C r.ou2 HuMi
ds3 / dr3 / ou3 0 / 0 / Hno r.ou3 tEMP
SP4 / rP4 80 / 75°C r.ou4 tEMP
ds4 / dr4 / ou4 0 / 0 / Hno dis FASt
Loc 000
Version with analogue outputs:
Analogue outputs
A1.Hi / A1.Lo / A.ou1 0 / 100 / i1
A2.Hi / A2.Lo / A.ou2 0 / 100 / i1
Diagnostic settings:
Diagnostics
SJ.ou out1
dH.MM 0.0
dt.MM 0.0
5.1.6.2 Disabling normal error handling
Here you can enable/disable normal error handling and analysis.
The function Disable error handling (Err.h) is used to disable normal error handling and analysis. This may pose dangers to the
user or machine.
Basic EF b.EF
Basic ext. functions
Err.h
Disable error handling
Set error handling ___
no - YES
Confirm
The options are:
Disables normal error handling. Enables normal error handling (default)
Important note: When exceeding the measuring range or if sensor errors occur, the measurement
will be frozen and all six LEDs in the status bar will blink. When the measurement returns to the
permissible range the LEDs will stop blinking and the display will refresh again as usual.
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5.1.6.3 Set humidity unit
This is where the unit symbol for the humidity is configured:
Basic EF b.EF
Basic Adv. Functions
H.uni
Humidity Unit
Set Unit Humidity ___
-I -
Selection menu
Options:
[-1-]
The options are:
Percent
5.1.6.4 Set temperature unit
This is where the unit symbol for the temperature is configured:
Basic EF b.EF
Basic Adv. Functions
t.uni
Temperature unit
Set Unit Temp ;_
;C - ;F
Selection menu
The options are:
Degrees
Celsius
Degrees
Fahrenheit
Note:
– Values are automatically converted and the measuring range adjusted. However, always check
the respective switching points and switch-back points.
5.1.6.5 Define switching outputs
Here you can define the switching outputs.
Use the “Define switching outputs” function to define the switching outputs (r.ou1 and r.ou2). The switching outputs can also
be configured as Err, HuMi or tEMP
Basic EF b.EF
Basic Adv. Functions
r.ou1/2
Define switching outputs
SET Output ___
HuMi-tEMP-Err
Selection menu
Options:
[Err, tEMP, HuMi]
The options are:
Err TEMP HuMi
Note:
– Switching outputs 1 and 2 can alternatively be wired as error indicators. In this case the output
will be connected as a NC contact which opens when exceeding the range or if an error occurs.
The LED assigned to this output will generally not be activated, as all 6 LEDs in the status bar will
blink if an error occurs.
– When defining a switching output as an error indicator it will no longer be an option for normal
switching output settings.
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5.1.6.6 Set display refresh rate
The refresh rate of the display can be changed based on the application. The display can also be completely disabled. The LEDs
will remain functional.
Basic EF b.EF
Basic Adv. Functions
Di5
Display rate
Display Rate ____
FASt - oFF
Selection menu
The options are:
fast medium slow Display off
Note:
– Error messages will still appear, even with the display off.
5.1.6.7 Enable/disable keylock
The keylock can be enabled to prevent unauthorised changes to the device settings.
Basic EF b.EF
Basic Adv. Functions
Lock
Locks the keys
Lock Device ___
0 - 999
Selection menu
The keylock will be enabled after entering at least one digit > 0. A dot indicates the active digit during this input.
Setting range:
000 to 999
– Use the key to open the list of values:
– Enter the digit using the and keys (0 to 9) and press the key to confirm. The active digit
will move one place to the right.
– Lastly, press the key to confirm the code.
The device will now return to the submenu.
Note:
– To disable the keylock enter: 000
5.1.7 Switching outputs
All switching outputs are configured the same way. The switching output number is therefore represented by x. Open the
switching output to be configured from the menu for the respective measured variable.
Display ____
Measurement display
____
Measured variable main menu
Measured variable out_
Out X
Settings menu OUTX
The switching output allocation and other basic settings related to all switching outputs can be configured in menu Basic Set-
tings Advanced Functions.
Use submenu Advanced Functions to configure additional settings for each individual switching output which e.g. affect the
switching characteristics of the output. The output can also be tested here.
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5.1.7.1 Switching output x: Definition of the switching characteristic
The switching characteristic for the output can be configured under the following menu:
Measured variable ____ out_
Measured variable main menu
Out X EF_
EF X
Advanced Functions
ou_
Set Out X
Definition OUTX
___
Selection menu
Hno - FM
Settings menu OUTX
The options are:
Hysteresis Function
Hysteresis function
as the NO contact
Hysteresis function
as the NC contact
NO contact or NC contact function when the out-
put signal is set when exceeding the configured
switching point. The output signal will be deleted
if the value is below the configured switch-back
point.
Here, NO contact (Hno) means the PNP switching
output is closed above switching point SPx and
opens below switching point rPx.
Here, NC contact (Hnc) means the PNP switching
output is open above switching point SPx and
closes below switching point rPx.
Also see the explanation in the drawing below.
SP
rP
Hno
(NO contact)
Hnc
(NC contact)
Hysteresis
SP-rP
()
Time t
Time t
Time t
Window function
Window function as
NO contact
Window function as
NC contact
NO contact or NC contact function defining a sig-
nal window. When the measuring window is
reached the output signal is set and deleted upon
exiting.
Here, NO contact (Fno) means the PNP switching
output is closed if the value is within the window.
Otherwise the switching output will be open.
Here, NC contact (Fnc) means the PNP switching
output is open if the value is within the window.
Otherwise the switching output will be closed.
FH
FL
Fno
(NO contact)
Fnc
(NC contact)
Time t
Time t
Time t
Window
Frequency output
Frequency output
If the output is defined as a frequency output, a
square wave signal with a frequency between 1Hz
and 100Hz proportional to the measurement will
be output.
Note: To increase the slew rate of the square wave
signal, we recommend loading the switching out-
put with an load of 10kΩ.
T ≤
corresponds
to f = 1 Hz
Time t
Time t
Time t
T = 47.5 °C
corresponds
to f = 50 Hz
T ≥
corresponds
to f = 100 Hz
F ILo F IHi
Example: = 15 °C, = 80 °C
with temperature T and frequency f:
F ILo
F IHi
16 Bühler Technologies GmbH BE150101 ◦ 12/2021

BCM-W
open
(0)
closed
(1)
open
(0)
closed
(1)
rising NO contact
falling NC contact
NO (normally open)
rising NC contact
falling NO contact
NC (normally closed)
Hno Hnc
Note: The designation of the switching function may vary:
Measured variable
5.1.7.2 Switching output x: Upper switching limit (switching point)
The upper switching limit for switching output Out x can be defined with the following submenu:
Measured variable ____ out_
Measured variable main menu
Out X ____
SPI FHI F I.Hi
Switching point X
____
Selection menu
[ o.Lo - o.Hi ]
Settings menu OUTX
Setting range:
[o.Lo]…[o.Hi]
Switching point for OUT x
Note:
– The switching point must be set to within the range limits (see menu Basic Settings Advanced
Functions).
– If switching output OUT x was assigned the function Window, will appear. The
setting corresponds with the upper window limit.
– If switching output OUT x was assigned the function Frequency output, will ap-
pear. The setting corresponds to the frequency 100 Hz.
5.1.7.3 Switching output x: Lower switching limit (switch-back point)
The lower switching limit for switching output Out x can be defined with the following submenu:
Measured variable ____ out_
Measured variable main menu
Out X ____
rPI FLI F I.Lo
Switch-back point X
____
Selection menu
[ o.Lo - o.Hi ]
Settings menu OUTX
Setting range:
[o.Lo]…[o.Hi]
Switch-back point for OUT x
Note:
– The switch-back point must be set to within the range limits.
– If switching output OUT x was assigned the function Window, will appear. The
setting corresponds with the lower window limit.
– If switching output OUT x was assigned the function Frequency output, will ap-
pear. The setting corresponds to the frequency 1Hz.
17Bühler Technologies GmbHBE150101 ◦ 12/2021

BCM-W
5.1.7.4 Switching output x: Switch-on delay
The menu Advanced Functions EFx is used to configure additional settings for switching output x. The submenu is at the second
submenu level.
The switching and switch-back delay prevents the alarm being triggered too frequently in unstable conditions. The switching
delay can be configured with the following menu:
Measured variable ____ out_
Measured variable main menu
Out X EF_
EF X
Advanced Functions
dS_
Delay SP X
Delay OUTX On
___
Selection menu
0 - 100
Settings menu OUTX
Setting range:
0…100 seconds
Time span in seconds during which the signal must be continuously present for the switching out-
put to respond.
Note:
– If switching output OUTx was assigned the function Window, the setting corresponds to the
switch-on delay which detects valid reaching of the measuring window.
– If switching output OUT x was assigned the function Frequency output, this value will have no
affect.
5.1.7.5 Switching output x: Switch-back delay
The switch-back delay can be configured with the following menu:
Measured variable ____ out_
Measured variable main menu
Out X EF_
EF X
Advanced Functions
dr_
Delay RP X
Delay OUTX Off
___
Selection menu
0 - 100
Settings menu OUTX
Setting range:
0…100 seconds
Switch-back signal delay for OUT x.
Time span in seconds during which the signal must be continuously present for the switching out-
put to respond.
Note:
– If switching output OUTx was assigned the function Window, the setting corresponds to the
switch-on delay which detects valid closing of the measuring window.
– If switching output OUTx was assigned the function Frequency output, this value will have no
affect.
5.1.7.6 Switching output x: Testing the switching output
The switching output test can be started with the following menu:
Measured variable ____ out_
Measured variable main menu
Out X EF_
EF X
Advanced Functions
C.ou_
Check Out X
Functional test OUTX
____
Selection menu
n.oP - on
Settings menu OUTX
Switching output test option
Options when setting ou1 to Hno / Hnc / Fno / Fnc:
Normal switching output opera-
tion
Switching output permanently
off disabled
Switching output permanently
activated
Options when setting ou1 to FM:
Normal mode as frequency out-
put
Output
Frequency 1 Hz
Output
Frequency 100 Hz
Note:
–After completing the test, set the function to normal mode n.oP.
18 Bühler Technologies GmbH BE150101 ◦ 12/2021