RHEONIK RHE45 Installation manual

RHE45 Installation & Startup Guide –Doc. No. 8.2.1.21 –Ver. 1.00
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RHE45
Installation & Startup Guide
D oc u me n t N o. : 8 . 2. 1 . 21
Ve rsi on 1 .0 0 JU N -2 0 1 9

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Table of Contents
1General Information ..........................................................................................................4
1.1 Important Safety Instructions for operating Coriolis Flowmeters ......................................4
1.2 Manufacturer’s Liability......................................................................................................4
1.3 Additional Resources ..........................................................................................................4
2Quick Start ........................................................................................................................5
3Installation........................................................................................................................5
3.1 Mechanical Installation ......................................................................................................5
3.2 Electrical Installation ..........................................................................................................6
Connectors ..........................................................................................................................6
3.2.1.1 12-pin M12 Connector ........................................................................................................6
3.2.1.2 8-pin M12 Connector ..........................................................................................................7
Power Supply and Grounding .............................................................................................7
3.2.2.1 Grounding and shielding.....................................................................................................7
3.2.2.2 Power Supply ......................................................................................................................8
Control Inputs and Outputs ................................................................................................8
3.2.3.1 Digital Outputs....................................................................................................................8
3.2.3.2 Analog Outputs...................................................................................................................9
3.2.3.3 Digital Inputs.....................................................................................................................10
4Operation and Configuration ........................................................................................... 11
4.1 Operating elements ..........................................................................................................11
External.............................................................................................................................11
Internal operating Elements .............................................................................................11
Zero Offset Calibration w/o interface...............................................................................12
4.2 Operation and Configuration via Display .........................................................................12
Function of the Pushbuttons.............................................................................................13
Passcodes and Menu Selection.........................................................................................14
Zero Offset Calibration...................................................................................................... 14
Change of Positive Flow Direction ....................................................................................15
Input/Output Configuration..............................................................................................16
4.2.5.1 Analog Output Configuration ...........................................................................................16
4.2.5.2 Digital Output Configuration ............................................................................................17
4.2.5.3 Digital Input Configuration ...............................................................................................19
4.3 Operation and Configuration via USB or RS485 ...............................................................20
Zero Offset Calibration...................................................................................................... 20
Input/Output Configuration..............................................................................................20

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I/O test .............................................................................................................................. 21
Internal System Time ........................................................................................................21
5Remote Operation ........................................................................................................... 22
5.1 USB....................................................................................................................................22
5.2 RS485 ................................................................................................................................22
5.3 Modbus TCP (I/O options EA and EB) ...............................................................................23
5.4 EtherNet, ProfiNet and EtherCAT (I/O options EN, EP and EC).........................................23
5.5 Profibus DP (I/O option DP) ..............................................................................................24
6Service and Maintenance................................................................................................. 24
6.1 Maintenance and Calibration ...........................................................................................24
6.2Supervision and Troubleshooting .....................................................................................24
6.3 Service...............................................................................................................................25
6.4 WEEE and RoHS ................................................................................................................25
7Ordering Code ................................................................................................................. 25
8Accessories...................................................................................................................... 26
Appendix A Technical Information .................................................................................. 27
A.1 Technical Data ..................................................................................................................27
A.2 Mechanical Drawing......................................................................................................... 29
Appendix B CE Certificate ............................................................................................... 30

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1General Information
1.1 Important Safety Instructions for operating Coriolis Flowmeters
The RHE45 transmitter model is integrated in the RHM flow sensor. Maximum
temperature limits for each RHM flow sensor are stated on the permanently attached
serial number plate and must not be exceeded.
The closed transmitter box provides a protection class of at least IP66.
The use of a properly grounded supply is highly recommended.
The use of shielded cables for all I/O signals is recommended to prevent interference
from high level EMI.
For safety instructions regarding RHM Coriolis Flow Sensors, please refer to the RHM
installation and startup guide manual.
These measuring instruments are not designed for, and should not be installed in, life-
preserving systems used in the medical, motor vehicle, aircraft, water craft or mining
industries.
All national regulations and standards regarding electrical installation must be
observed!
1.2 Manufacturer’s Liability
Rheonik assumes no liability for loss and/or consequential damages stemming from the
use of this product utilized in life-preserving systems in the medical, motor vehicle,
aircraft, water craft or mining industries.
Rheonik accepts no liability for loss or damage resulting from the improper use of any
of its products.
Rheonik assumes no liability for the loss of production and/or consequential damage
from the use of this product unless such liability has been expressly and contractually
agreed.
Rheonik provides a standard one year from shipment warranty on all products for
workmanship and materials. Performance of this warranty will be at the Rheonik
manufacturing facility.
Rheonik assumes no liability for determining the suitability of its products in any specific
application. This is the sole responsibility of the end user.
1.3 Additional Resources
Since this document mainly describes the installation and
commissioning of the RHE45 transmitter it does not contain all
information related to the configuration of the transmitter and its
features. These items are described extensively in the documents
listed in Table 1. Manuals and further resources are available for
download from the Rheonik website:
www.rheonik.com

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Table 1: Additional Documentation
Title
Description
Document Number
RHE4X Desktop Reference
Extensive description of the configuration
options of the RHE4X transmitter series.
8.2.1.14
Addendum RHE4X Desktop Reference
Data Logging
Description of the data logging feature
present in the RHE4X transmitter series.
8.2.1.15
Addendum RHE4X Desktop Reference
Statistics
Description of the statistic feature present in
the RHE4X transmitter series.
8.2.1.28
RHEComPro Suite User Manual
Installation and use of the RHEComPro Suite
for PC for the operation and configuration of
the RHE transmitters.
8.2.1.18
2Quick Start
Carry out the following steps to prepare the flow meter for operation:
1) If not already done, install the RHM sensor in line (refer to the RHM Coriolis Sensor
Installation Guide for additional information on mechanical installation).
2) Connect all signal input, output and communications interface wiring as required (section
3.2.3).
3) Connect power supply (section 3.2.2).
NOTE:
For safety, always connect the protective ground.
4) Switch on the power supply. The “READY” LED will light up (only visible when transmitter
enclosure is opened).
5) Flush the RHM flow sensor with process fluid and ensure that it is free of air bubbles (in
case of a liquid process fluid) or liquid droplets (in case of a gaseous process fluid).
6) Wait until the RHM temperature has stabilized and then carry out a zero point calibration
(section 4.3):
Ensure a zero flow condition is present in the flow sensor by closing isolation valves
Initiate zeroing of the sensor and wait for the zeroing procedure to complete
Open isolation valves to allow flow through the sensor
The device is ready for operation.
3Installation
3.1 Mechanical Installation
The RHE45 is connected to the RHM ex works and cannot be removed.
For mounting the RHM refer to the corresponding manual delivered with the RHM.
When hot fluids are to be measured the housing of the RHE45 must not be thermally
isolated from the ambient for avoiding overheating the electronics.
When planning the mechanical installation please leave at least 12.5 cm/5 inch space for the M12
plugs and the attached cables at the side where the M12 sockets are located.
Technical data and mechanical drawings can be found in Appendix A.

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3.2 Electrical Installation
Caution, the surface of the RHE45 may be hot if a hot fluid is running through the RHM
sensor.
Any cable used for connecting to the RHE45 must be specified for 80°C or higher.
The use of shielded cable is strongly recommended.
Connectors
The RHE45 has one 12-pin M12 connector, “A” coded, for power supply and standard interfaces
and one 8-pin M12 connector, “A” coded for high-speed interfaces of Ethernet 100base TX type.
With the I/O configurations B1, S1, S2, P1, and P2 the 8-pin socket is internally not connected.
If the 8-pin M12 connector is not used, it must be closed with the protection cap delivered with
the RHE45 for maintaining the ingress protection.
As accessories Rheonik offers readily configured cables. For available accessories see chapter 8.
3.2.1.1 12-pin M12 Connector
The 12-pin M12 connector of the RHE45 provides power supply, RS485 interface, digital outputs,
digital input, and the analog 4-20mA interfaces.
Caution: Before connecting the 12-pin M12 socket please check that the power supply
is correctly connected to the pins 1 and 3 of the 12-pin M12 plug to prevent damage.
The following figures show the pin numbering of the 12-pin M12 socket in the RHE4X transmitter
and a respective plug.
Figure 1: Pin Numbering of the RHE45 12-pin M12 Socket
Figure 2: Pin Numbering of an 12-pin M12 Plug
Table 2: Pin Configuration of the 12-pin M12 Socket
Pin #
Signal
I/O Option
Remark
1
+24V
all
Positive supply terminal
2
AO1-
S1, S2, P1, or P2
Negative terminal for analog output 1
3
0V/GND
all
Ground for power supply
4
RS485-
all
Negative signal of the two-wire RS485 interface
5
DO1
all
Digital output 1 (called channel 0/A in the Modbus documentation)
6
RS485+
all
Positive signal of the two-wire RS485 interface
7
DI1
all
Digital input 1
8
DO2
all
Digital output 2 (called channel 1/B in the Modbus documentation)
9
AO1+
S1, S2, P1, or P2
Positive terminal for analog output 1
10
I/O GND
all
Ground for digital in- and outputs
11
AO2+
S2, or P2
Positive terminal for analog output 2
12
AO2-
S2 or P2
Negative terminal for analog output 2
Shield
Ground / PE
all
Top
View
Plug
Top
View
Socket

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3.2.1.2 8-pin M12 Connector
The 8 pin M12 connector is only connected internally, if one of the following options (see
ordering code section 7) is installed:
EA, EB
Modbus TCP
EN
EtherNet/IP
EP
ProfiNet
DP
Profibus DP
EC
EtherCAT
The drawing shows the pin numbering of a 8 pin M12 connector. The function of the pins for the
different options is described in chapter 5.
Figure 3: Pin Numbering of the RHE45 8-pin M12 Socket
Figure 4: Pin Numbering of an 8-pin M12 Plug
Power Supply and Grounding
For connections longer than 0.5m shielded cables should be used. For connections longer than
3m, additional ferrite filter beads close to the RHE are recommended for avoiding RF EMI.
The power supply input is protected by a fuse. As a protection against fire in case of a short in
the cable, the supply side of the cable should be protected by a fuse (see figure 5, SI1) with a
rating not higher than the current carrying capacity of the cable.
The ground signal of the RHE45 (Terminal 3 and 10 of the 12 pin M12 connector) is connected to
PE and housing via a 10kΩ resistor.
The cables used for power supply and grounding must comply with the national
requirements. If required, certified cables must be used. The minimum cross section is
0.35mm² (AWG 22).
The RHE45 does not contain a mains switch. A switch or circuit breaker close to the
RHE45must be included in the supply line. The switch must be marked correspondingly.
3.2.2.1 Grounding and shielding
An RHM with an RHE45 transmitter must be grounded. Refer to the manual of the RHM for the
position of the ground terminal.
The cross sectional area of the grounding wire must be equal to or larger than the conductors
used for any supply or I/O connection.
Note: National and Local electrical code requirements may contain additional grounding
requirements. Please ensure that all grounding to carried out to these [legal] requirements.
For connections longer than 0.5m shielded cables should be used. For best EMC performance the
shield should be connected on both ends of the cable. If the shield cannot be connected on both
ends due to potential differences between PE on both ends, one end might be connected to PE
via a 1nF capacitor on one end.
Top
View
Socket
Top
View
Plug

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3.2.2.2 Power Supply
The RHE45 requires a regulated DC supply voltage
of 12V or 24V. It will operate with a power supply
in the range 10V to 28V.
Connect the positive supply to terminal 1 and 0V
to terminal 3 of the 12 pin M12 connector.
Terminal 3 (0V) and housing (PE) are connected via
a 10kΩ resistor. The resistor can withstand a
potential difference of up to 30V between 0V and
PE, but voltage differences above 5V should be
avoided. For best EMC performance connect the
supply ground to PE close to the RHE45.
Control Inputs and Outputs
In general, shielded cables should be used for cable connections longer than 0.5m. For cable
connections longer than 3m, it is recommended that ferrite filter beads are installed close to the
RHE terminations to help avoid RF EMI.
3.2.3.1 Digital Outputs
The RHE45 has two universal digital outputs which can be used as frequency, pulse or
control/status outputs.
Digital outputs are push-pull outputs compliant to IEC 60946. They can drive loads connected to
ground and loads connected to +24V.
Figure 6: Digital Outputs
Connect the output of the RHE to the load. Connect the other side of the load to either GND or
to the positive supply rail. With a grounded load, the output current should be limited to 20mA
(480mW at 24V). With a load connected to the positive supply rail the output can drive up to
50mA (1.2W at 24V).
Figure 5: DC Power Supply

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The output can drive relays directly as well. Relays should be connected between the output and
the positive supply rail.
The maximum output current is internally limited to 50mA. If the output current exceeds this
limit due to a too low load resistance, the output will be disabled automatically.
3.2.3.2 Analog Outputs
Depending on the I/O configuration ordered, the RHE45 has passive, active or no analog outputs.
The minimum current of the analog 4-20mA interfaces is limited to 3.2mA. Thus, fire state
settings of 2.0mA or 0.0mA are silently corrected to 3.2mA by the RHE45 firmware.
Passive analog outputs (I/O option P1 or P2):
Connect terminal 9 (11 for output 2) to the positive
terminal of a 24V supply (12V would be possible as well)
and terminal 2 (12 for output 2) to the load. The negative
terminal of the load must be connected to the GND
terminal of the supply.
A protective resistor can be connected in series with the
transmitter output and the load. Please note, with a 24Vdc
supply, the maximum total load resistance is 600 Ω.
Figure 7: Digital Output with Relays
Figure 8: Passive Analog Outputs

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Active analog outputs (I/O option S1 or S2):
Connect load between terminal 9 (11 for output 2) and
GND.
A protective resistor can be connected in series with the
transmitter output and the load. Please note, with a
24Vdc supply, the maximum total load resistance is 600 Ω.
3.2.3.3 Digital Inputs
RHE45 transmitters have one or two IEC60946 compliant digital inputs.
Digital inputs have an input resistance of 24 kΩ and when operated, will draw approx. 1mA when
connected to a 24Vdc supply.
Figure 10: Digital Inputs
Digital inputs can be operated with an active DC signal instead of a switch. The maximum input
voltage must not exceed 30V DC. The required input voltage for a low-high transit is typically 11V,
maximum 12.5V, corresponding to an input current of about 0.5mA.
The digital input 2 is available with I/O option EA and EB only. The input is located on the 8 pin
M12 connector, pin 2 (DI2) and pin 3 (I/O GND).
Figure 9: Active Analog Outputs

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4Operation and Configuration
4.1 Operating elements
External
Figure 11: RHE45 Enclosure in Standard Orientation
If the 8-pin M12 connector is not used, it must be closed with the protection cap delivered with
the RHE45 for maintaining the ingress protection.
Internal operating Elements
When the cover of the RHE45 enclosure is removed a part of the electronics becomes accessible
which contains some user configurable elements, e.g.:
1. Mini USB socket (see chapter 5.1)
2. Status LEDs, green (ON), yellow (Hard Lock switch active), red (ERROR)
3. Hard Lock switch (option)
4. RS485 termination switch
5. Push button “ZERO”
6. Power supply fuse
7. Display with control keys (optionally)
Figure depicts the RHE45 transmitter without display when the cover is open.
When opening the cover of the RHE45 enclose make sure that no fluids enter the
enclosure and observe basic EMC measures such as connecting yourself to the earth
potential of the enclosure.
Figure also shows the switch positions for the activation or deactivation of the RS485 termination
and the Hard Lock switches. The activation of the Hard Lock switch also will be shown by the
yellow LED being lit. In this case no modification of setup parameters is possible.
M12 8-pin socket
M12 12-pin socket
Display with Control Keys

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Figure 12: RHE45 with Open Enclosure
Zero Offset Calibration w/o interface
After installation of the RHM with RHE45 a zero calibration is strongly recommended.
Flush the RHM with the fluid to be measured and make sure that the RHM is 100% filled.
Operate the RHE45 for at least 15 minutes for warming up.
Open the top cover of the RHE by removing the 4 screws in the corners of the top cover.
Stop the flow and make sure that there is no more flow. For best results a valve in front
and behind the RHM would be recommended.
Press the pushbutton “ZERO” with a tool (screwdriver, pencil) for about 2 seconds. The
red and the green LED star flashing.
When the flashing stops and the green LED lights constantly reclose the top cover.
Reopen the valves.
Make sure that the top cover gets properly closed for achieving the IP protection.
The RHE45 must not be opened in wet or dirty (dusty) ambient or when the housing of
the RHE45 is wet.
4.2 Operation and Configuration via Display
Optionally, the RHE45 transmitter has a user operation interface consisting of a color LCD screen
and three pushbuttons. The screen and pushbuttons are used to navigate through a hierarchical
menu structure that logically and intuitively organizes the various features and functions
available within the programming set supplied with the instrument. This chapter gives a short
introduction into operation of the RHE45 through the front panel user interface. For more
detailed information, please refer to the RHE4X Desktop Reference Manual.
ON
OFF
INACTIVE
ACTIVE
1
2
3
4
5
6

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Function of the Pushbuttons
RHE45 transmitters can be operated through three front panel pushbuttons. These are labeled
“ESC” [X], “NEXT” [>], and “ENTER” []. The function of these pushbuttons depends upon the
currently displayed screen.
The following table details button function in specific situations.
Table 3: Functions of the Pushbuttons
Button
Situation
Function
ESC
Menu Navigation
Navigates to the menu one level up
Number Input
Exits number input field and returns to the associated menu window without
saving any changes
NEXT
Menu Navigation
Selects the next menu item
During Number
Input
Increments the number at the cursor position by one. Number increment is
circular: a ‘9’ increments to ‘0’ for decimal numbers, ‘F’ increments to ‘0’ for
hexadecimal numbers (used for service password)
Number Sign
Change
Changes ‘+’ to ‘-’ and vice versa. When entering a number with a sign character,
the cursor will start at the first number character to the right of the sign
character in the field. In order to reach the sign character, it is necessary to
traverse all the way to the rightmost character and then start at the beginning
of the input field again
Decimal Point
Position Change
Shifts the decimal point and cursor position one place to the right
End of input line
The entire number will flash upon pressing ENTER at the rightmost character in
an input field. Pressing NEXT when the field is flashing will return the cursor to
the start of the input line
ENTER
Menu Navigation
Navigates to the menu one level down or enters an input screen
During Number,
Sign or Decimal
Point entry/ change
Moves the cursor one character to the right in an input field. Note that when a
number is entered that is not in the parameters’ acceptable range, the field will
change to inverse colors (light on dark instead of dark on light). When a number
is not within an acceptable range, pressing ENTER at the rightmost character in
the field will return the cursor to the leftmost position in the field for re-editing.
Number Input at
the End
Pressing ENTER at the rightmost character in the field will cause the entire field
to flash. Pressing ENTER again will commit the modified number and return
display to the associated menu window
Status Infos - Bit
Status Displays
Increment the index of individual bits in the status words. Successively pressing
ENTER in the Error Status, Soft Error Status, or Warnings items will allow
display/read of each individual bit value and its status description
For example, and as depicted in Figure 13, when navigating the menu structure, press the ENTER
pushbutton once to get from the main display screen to the top level menu selection. Press the
NEXT button repeatedly to scroll through the entire menu. To enter any specific menu, press
ENTER.
Figure 13: Example –RHE45 Top Level Menu Selection
Main Screen

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Passcodes and Menu Selection
To configure and carry out certain functions in an RHE45 transmitter, it is necessary to enter a
predetermined passcode. Passcodes protect configuration setup and prevent inadvertent
changes to the flow meter operating condition. There are two different access levels with
separate passcodes: “USER” and “SERVICE”. The USER level accesses those functions that relate
to the operation of the flow meter on a day to day basis i.e. zeroing and totalizer reset. The
SERVICE level allows access to configuration and setup functions such as I/O ranging and
calibration.
When needed, the screen will prompt for a passcode. Passcodes are entered using the NEXT and
ENTER buttons. Once entry is complete, the entire passcode will flash. Press ENTER again to
enter the menu. If the passcode supplied is incorrect, the cursor will return to the leftmost
character of the passcode for re-entry.
Factory default passcodes are shown in Table 4. The USER level passcode can be changed by
accessing the “Service Login” menu.
Table 4: Default Passcodes
Access Level
Passcode
User
1111
Service
5678
Zero Offset Calibration
Before carrying out a zero offset calibration, make sure that there is a zero flow condition in the
RHM sensor i.e. valves have been closed upstream and downstream of the RHM meter body.
Navigate to the “Zero Now” menu item as shown in Figure 14 to perform the zeroing procedure.
It will be necessary to enter the user passcode (see section .2).
Figure 14: RHE45 Menu - Zero Offset Calibration
To perform the zeroing procedure, press NEXT at the Y/N confirmation screen to change the “N”
to “Y”. Press ENTER to start the procedure or ESC to cancel. Once started, a countdown timer will
begin. When it reaches 0, the zero offset calibration procedure is complete. Return back to the
main screen by pressing the EXIT pushbutton twice.
Main Screen

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Change of Positive Flow Direction
Rheonik mass flow meters are bi-directional and can operate with flow passing through them in
any direction. In some cases after installation, the transmitter may read negatively because of
orientation. In this case, the flow direction indication can be reversed within the transmitter. To
change the positive flow direction, navigate to the “Phase Measurement” menu item under
Service Login (Figure 15).
Change the value of the “PhsFlwDirConfig” parameter from “0” to “1” (or vice versa) to change
the flow direction indication of the transmitter.
Figure 15: RHE45 Menu - Flow Direction Change
Main Screen

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Input/Output Configuration
To configure the analog and digital outputs, navigate to the respective menu items under User
Login (Figure 16).
4.2.5.1 Analog Output Configuration
1. Select “Analog Output” 1 [C] or 2 [B] and press “ENTER” [] to get to the “Configuration”
[C/B01] menu
2. Select one of the options stated in Table 5 under ID [C/B01], e.g. Configuration 3 –Density
3. The default settings are: “Maximum mA” [C/B02] = 20mA; “Minimum mA” [C/B03] = 4mA.
This can be changed if necessary
4. Assign the maximum and minimum of the measured variable to respective mA level,
e.g. 1200 kg/m³ for “Density Max” [C/B08] and 0 kg/m³ for “Density Min” [C/B09]
5. Select a fire state configuration [C/B14] to determine what shall happen if the measured
variable range is exceeded or in case of error condition
6. If necessary set a damping factor [C/B17] and damping band range [C/B18]
Table 5: Important Analog Output Parameters
ID
Abbreviation
Full Name / Description
[C/B01]
CurOutConfig
Current Output Configuration:
Assigns an output channel to the current output:
0 –Analog output is off.
1 –Analog output is configured for Mass Flow (default). → set [C/B04], [C/B05]
2 –Analog output is configured for Volumetric Flow. → set [C/B06], [C/B07]
3 –Analog output is configured for Density. → set [C/B08], [C/B09]
4 –Analog output is configured for Tube Temperature. → set [C/B10], [C/B11]
5 –Analog output is configured for Torsion Bar Temperature. → set [C/B12], [C/B13]
6 –Drive Gain. → set [C/B15], [C/B16]
0
Main Screen
Figure 16: RHE45 Menus - Output Configuration

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ID
Abbreviation
Full Name / Description
[C/B14]
CurOutFireState
Current Output Fire State:
Determines the behavior (“fail high” or “fail low”) and value of the analog output
when the measured variable range is exceeded (values 1 to 5), i.e. the measurement
is outside of (CurOutCurMax) and (CurOutCurMin), or an error condition exists in the
SoftError or ErrorStatus fields (values 6 to 10).
State 0 - Output tracks the signal and clamps at the CurOutMaxCur and
CurOutMinCur values when its range is exceeded (default).
State 1 - 22 mA = range exceeded
State 4 - 3.2 mA = range exceeded
State 5 - 3.6 mA = range exceeded
State 6 - 22 mA = error condition
State 9 - 3.2 mA = error condition
State 10 - 3.6 mA = error condition
[C/B17]
CurOutDampingTau
Current Output Damping Tau:
Time constant (Tau) of the current output damping in seconds. An exponential
damping mechanism is used within a defined band, see CurOutDampingBand. When
the output values leave the defined band the damping is disabled. A value of 0.0
disables the damping.
[C/B18]
CurOutDampingBand
Current Output Damping Band:
Defines the band range for the damping of the current output in percent of the range
between “Minimum mA” [C/B02] and “Maximum mA” [C/B03]. A value of 100 makes
sure that the values never leave the band and that the damping always is active.
4.2.5.2 Digital Output Configuration
1. Select “Pulse Output” 1 [R], 2 [S] or “Digital Output” A [K], B [L] and press “ENTER” [] to
get to the “Configuration” [R/S01, I-L01] menu.
The pulse outputs [R,S] can be assigned to a certain pulse rate from a measured value,
e.g. the mass flow rate.
The digital outputs [K,L] can be used to indicate status or error.
“Pulse Output” 1 [R] and/or 2 [S] must be disabled if the parameters “Digital Output”
A [K] and/or B [L] are assigned to universal digital/pulse outputs
2. Select a configuration for the pulse output according to the options stated in Table 10
under ID [R/S01] or for the status output under ID [I-L01]
Examples:
a) Configuration of pulse output [R, S] for mass:
oSelect value 1 for parameter ID [R/S01]
oAcc. to Table 6, the parameter [R/S02] has to be selected. This parameter specifies
the mass equivalent to one pulse. E.g. when set to 0.001kg, a mass transfer of 1kg
will cause 1000 pulses
b) Configuration of a frequency output [R, S] for mass flow rate:
oSelect value 13 for parameter [R/S01]
oAcc. to Table 6 the parameters [R/S04 & 07] have to be selected. The parameter
[R/S04] specifies the mass flow rate equivalent to the frequency set under
parameter [R/S07]. E.g. when [R/S04] is set to 1kg/min and [R/S07] is set to 1000Hz
a mass flow rate of 5kg/min will cause a frequency of 5000Hz

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c) Configuration of a digital output [I-L] for mass flow alarm:
oSelect value 1 for parameter [I-L01]
oAcc. to Table 6 the parameters [I-L02, 03 & 04] apply. Select the needed alarm type
[I-L02] and enter the low [I-L03] and high [I-L04] alarm values. The unit of the alarm
is determined by the digital output configuration [I-L01]. For mass flow alarm the
unit is fixed to kg/min
Table 6: Important Pulse and Digital Output Parameters
ID
Abbreviation
Full Name / Description
R/S01]
VersDigOutCh0/1Config
Versatile Digital Output Configuration:
Used to assign different functions to the pulse output.
In simple pulse mode, Pulse1 and Pulse2 operate independently. In phase shift mode,
Pulse1 and Pulse2 work together to produce the desired pulse output relationship. In
phase shift mode, both outputs (Pulse1 & Pulse2) should be set to the same mode.
0: Pulse output is off.
1: Mass Flow –Simple Pulse, Forward Flow. → set [R/S02]
2: Volume Flow –Simple Pulse, Forward Flow. → set [R/S03]
3: Mass Flow –Pulse1 & Pulse2 90 Degrees phase shift. → set [R/S02]
4: Volume Flow –Pulse1 & Pulse2 90 Degrees phase shift. → set [R/S03]
5: Mass Flow –Simple Pulse, Reverse Flow. → set [R/S02]
6: Volume Flow –Simple Pulse, Reverse Flow. → set [R/S03]
7: Mass Flow Rate Fast Frequency Output. → set [R/S04 & 07] fast
8: Volumetric Flow Rate Fast Frequency Output. → set [R/S05 & 07] response
9: Density Fast Frequency Output. → set [R/S06 & 07] time
10: Mass Flow Rate Slow Frequency Output. → set [R/S04 & 07] slow
11: Volumetric Flow Rate Slow Frequency Output. → set [R/S05 & 07] response
12: Density Slow Frequency Output. → set [R/S06 & 07] time (1s)
13: Mass Flow Rate RHE Compatibility Mode Frequency Output.
→ set [R/S04 & 07] Freq. mode of
14: Volume Flow Rate RHE Compatibility Mode Frequency Output. previous RHE
→ set [R/S05 & 07]
[I-L01]
DigOutCh0/1/A/BConfig
Digital Output Channel 0 Configuration:
Alarm Channel configuration:
0: Error indication (default)
1: Mass flow alarm → set [I-L02, 03 & 04]
2: Volumetric flow alarm → set [I-L02, 03 & 04]
3: Density alarm → set [I-L02, 03 & 04]
4: Tube temperature alarm → set [I-L02, 03 & 04]
5: Torsion bar temperature alarm → set [I-L02, 03 & 04]
6: Pressure Alarm → set [I-L02, 03 & 04]
7: Forward Mass Totalizer TotalMassFwd for Batch Mode → set [I-L02, 03 & 04]
8: Forward Volume Totalizer TotalVolFwd for Batch Mode → set [I-L02, 03 & 04]
9: Fatal errors or Zeroing force output low, else high.
10: Fatal errors or Zeroing force output high, else low.
For values 1 to 8, the ERR output is pulled high when the alarm condition specified in
DigOutCh0/1/A/BAlmType, DigOutCh0/1/A/B AlmLow, and DigOutCh0/1/A/B AlmHigh
becomes true.
[I-L02]
DigOutCh0/1/A/BAlmType
Digital Output Alarm Type:
Alarm Channel: Digital Alarm Type:
0: Setpoint alarm (hysteresis, default) –Alarm is indicated when the output is higher
than DigOutCh0AlmHigh and cleared when it returns below DigOutCh0AlmLow.
1: Inband alarm –Alarm is indicated when the output is in the range from
DigOutCh0AlmLow to DigOutCh0AlmHigh.
2: Outband alarm –Alarm is indicated when the output is outside the range
DigOutCh0AlmLow and DigOutCh0AlmHigh.
An indicated alarm on channel 0 pulls the digital output 4 labeled “ERR” low.

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ID
Abbreviation
Full Name / Description
[I-L03]
DigOutCh0/1/A/BAlmLow
Digital Output Alarm Low:
Alarm low value, see DigOutCh0/1/A/B AlmType. Must be a floating point value of 0.0
or higher. There is no unit conversion for this register. The unit depends on the
DigOutCh0/1/A/B Config setting:
1: kg/min
2: m3/min
3: kg/m3
4: Degrees Celsius
5: Degrees Celsius
6: Pascal
7: kg
8: m^3
The same units are used for all digital status outputs 0, 1, A, and B depending on
DigOutCh0/1/A/BConfig respectively.
[I-L04]
DigOutCh0/1/A/BAlmHigh
Digital Output Channel 0 Alarm High:
Alarm high value, see DigOutCh0/1/A/BAlmType. Must be a floating point value of 0.0
or higher. See DigOutCh0/1/A/BAlmLow for the unit specification.
4.2.5.3 Digital Input Configuration
To configure the digital inputs, navigate to
the menu item “HMI” under User Login
(Figure 17).
1. Select “HMI” [H] and navigate to the “DI1
Property” (digital input 1) [H02] or to the
“DI2 Property” (digital input 2) [H03]
menu.
2. Select one of the options stated in Table
11.
Table 7: Digital Input Setting Options
ID
Abbreviation
Full Name / Description
[H02]
[H03]
DI1Property
DI2Property
Property of Digital Input 1/2:
Functionality of Digital Input 1/2:
0: DI1/2 is disabled. All inputs are ignored (default).
1: DI1/2 causes the start of a Zeroing Process. Logic is positive –a transition to a high logic level starts
the Zeroing.
2: DI1/2 causes the start of a Zeroing Process. Logic is negative –a transition to a low logic level starts
the Zeroing.
3: DI1/2 causes reset of the Totalizers and the start of Batch Processing if configured, see RHE4X
Desktop Reference, Batch Mode. Logic is positive –a transition to a high logic level starts the Batch.
4: DI1/2 causes reset of the Totalizers and the start of Batch Processing if configured, see RHE4X
Desktop Reference, Batch Mode. Logic is negative –a transition to a low logic level starts the Batch.
5: A transition from low to high at DI1/2 stops the totalizers when they are in the running state. A
transition from high to low at DI1/2 restarts the totalizers when they are in the stopped state.
6: A transition from high to low at DI1/2 stops the totalizers when they are in the running state. A
transition from low to high at DI1/2 restarts the totalizers when they are in the stopped state.
Figure 17: RHE45 Menu –Digital Output Configuration

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4.3 Operation and Configuration via USB or RS485
If the RHE45 is connected via RS485, we recommend making all setup via RS485, if possible via
the remote control SW RHEComPro.
If there is no RS485 connected, you can use the internal Mini USB interface.
The RHE45 must not be opened in wet or dirty (dusty) ambient or when the housing of
the RHE45 is wet.
For setting up the RHE45 via the internal USB interface proceed as follows:
Open the top cover of the RHE by removing the 4 screws in the corners of the top cover.
Connect the USB to a PC, preferable to a laptop.
Start RHEComPro on the laptop. For more information about installation and usage of the
RHEComPro refer to the manual of the RHEComPro.
Connect to the RHE45 by clicking on “Connect”. If the SW does not find the RHE45, try a
different COM port.
After having finished the setup disconnect the RHE45 in RHEComPro (ikon in left sidebar),
remove the USB cable and reclose the RHE45.
Make sure that the top cover gets properly closed for achieving the IP protection.
Zero Offset Calibration
After installation of the RHM with RHE45 a zero calibration is strongly recommended.
Flush the RHM with the fluid to be measured and make sure that the RHM is 100% filled.
Operate the RHE45 for at least 15 minutes for warming up.
Stop the flow and make sure that there is no more flow. For best results a valve in front
and behind the RHM would be recommended.
Click 2 times on the arrow in the right upper corner of the RHEComPro main display.
Click on “Make Zero” in the right lower corner of the RHEComPro display. The field “Zero”
gets yellow and the time counter counts down to zero.
When the counter stops at zero and the field “zero” returns to green, reopen the valves
for normal operation.
Input/Output Configuration
The RHEComPro has a menu for configuring the outputs. The menu is self-explaining and no
special knowledges are required.
Proceed as follows:
Click on “Configuration” on top of the RHEComPro main display.
Select the input or output to be configured and follow the explanations in the menu.
After “OK” or “Cancel” at the end the RHEComPro returns to normal operation.