Scaime eNod3-D User manual

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eNod3-D: User’s instructions 165 752-A1/23
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User’s instructions

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eNod3-D: User’s instructions 165 752-A2/23
1GENERAL PRESENTATION :..............................................................................4
1.1 Dimensions :.................................................................................................................................... 4
1.2 General characteristics :.................................................................................................................. 5
2INTERFACES : .....................................................................................................6
2.1 Connection to power supply : .......................................................................................................... 6
2.2 Connection to load cell(s) :.............................................................................................................. 6
2.3 Connection of inputs and outputs :.................................................................................................. 7
2.3.1 Digital inputs...........................................................................................................................7
2.3.2 Digital outputs.........................................................................................................................7
3COMMUNICATION INTERFACES : .....................................................................8
4COMMUNICATION : .............................................................................................9
4.1 ModBus RTU : ................................................................................................................................. 9
4.2 SCMBus :......................................................................................................................................... 9
4.2.1 Fast SCMBus format :............................................................................................................9
4.3 CANopen : ....................................................................................................................................... 9
5CALIBRATION :..................................................................................................10
5.1 Calibration types :.......................................................................................................................... 10
5.2 Non-linearity correction.................................................................................................................. 10
6INPUTS FUNCTIONING : ...................................................................................11
6.1 Inputs assignement :...................................................................................................................... 11
6.2 Functions independant of the functioning mode :..........................................................................11
6.3 Functions specific to each functioning mode :...............................................................................11
7OUTPUTS FUNCTIONING : ...............................................................................12
7.1 Outputs assignement :................................................................................................................... 12
7.2 Functions independant of the functioning mode :..........................................................................12
7.3 Functions specific to each functioning mode :...............................................................................12
7.4 Feeding mode in dosing processes............................................................................................... 13
8SET POINTS :.....................................................................................................13
9FILTERS : ...........................................................................................................13
10 TRANSMITTER FUNCTIONING MODE :...........................................................14
10.1 Measurement reading request :..................................................................................................... 14
10.1.1 Single measurement transmission :.....................................................................................14
10.1.2 Continuous measurement transmission...............................................................................14
10.2 Specific commands through an input :...........................................................................................14
10.2.1 Transmit measurement (Fig. 4)............................................................................................14
10.2.2 Measurement window (Fig. 5)..............................................................................................15
10.2.3 Clear.....................................................................................................................................15
11 DOSING BY FILLING FUNCTIONING MODE :..................................................16
11.1 Starting conditions ......................................................................................................................... 17
11.2 Cycle description............................................................................................................................ 18
11.2.1 Flow rate control (optional)...................................................................................................18
11.2.2 Automatic taring at start .......................................................................................................18
11.2.3 Coarse feed effect neutralization time..................................................................................18
11.2.4 Fine feed level......................................................................................................................18
11.2.5 Fine feed effect neutralization time......................................................................................18
11.2.6 Target weight and inflight weight..........................................................................................19
11.2.7 Final stabilization time..........................................................................................................19
11.2.8 Tolerances............................................................................................................................19
11.2.9 End of emptying level and emptying holding time................................................................19
11.2.10 End of cycle waiting time......................................................................................................19
11.2.11 Effective end of cycle............................................................................................................19
11.3 Digital inputs utilization .................................................................................................................. 19
11.3.1 Start cycle.............................................................................................................................19
11.3.2 Suspend current cycle..........................................................................................................19
11.3.3 Stop cycle.............................................................................................................................20
12 DOSING BY UNLOADING FUNCTIONING MODE :..........................................20
12.1 Reloading management................................................................................................................. 22

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12.1.1
Reloading at the end of the cycle.........................................................................................22
12.1.2 Reloading at the start of the cycle........................................................................................22
12.2 Cycle description............................................................................................................................ 22
12.2.1 Flow rate control (optional)...................................................................................................22
12.2.2 Verification of the available product quantity........................................................................22
12.2.3 Start delay ............................................................................................................................22
12.2.4 Coarse feed effect neutralization time..................................................................................22
12.2.5 Fine feed level......................................................................................................................22
12.2.6 Fine feed effect neutralization time......................................................................................22
12.2.7 Target weight and inflight weight..........................................................................................23
12.2.8 Final stabilization time..........................................................................................................23
12.2.9 Tolerances............................................................................................................................23
12.2.10 End of cycle waiting time......................................................................................................23
12.2.11 Effective end of the cycle .....................................................................................................23
12.3 Digital inputs utilization .................................................................................................................. 23
12.3.1 Start cycle.............................................................................................................................23
12.3.2 Suspend current cycle..........................................................................................................23
12.3.3 Stop cycle.............................................................................................................................23

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1 GENERAL PRESENTATION :
eNod3-Dprovides an economic high performance solution to transform any strain gauge sensor into an
intelligent digital system. eNod3-Dincludes three advanced operating modes for control of static and
dynamic processes :
- measurements transmitter
- dosing by filling
- dosing by unloading
eNod3-Dis equiped with RS485/422, RS232 and CANbus outputs supporting ModBus-RTU, SCMBus
and CANopen protocols. Each module is also provided with 2 digital inputs and 4 digital outputs,
authorizing synchronization of functions with automation and alarm management.
SCAIME provides the eNodView software to facilitate installation of eNod3-Dto set parameters and
calibrate the measurement system, for acquisition of measurements and simulation of digital filters.
1.1 Dimensions :
Single board card
Waterproof
housing version
DIN rail version

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1.2 General characteristics :
Power supply
power supply voltage 10 ..... 28 V
DC
max consumption 70 with 350Ωload cell
120 with 80Ωload cell mA
Temperature range
storage temperature -25...+85 °C
operating temperature -10...+40 °C
Load cell
impedance (complete bridge) > 80 Ω
connection 4 or 6 wires
load cell power supply 5 ± 5% V
DC
Communication
RS 485/422 and RS232 Half or full-duplex
RS baud rate 9600 ... 115200 bauds
Can 2.0A 20....1000 kbauds
Logical inputs
number 2
type optocoupler
low-level voltage 0 ..... 3 V
DC
high-level voltage 9 .... 28 V
DC
current at high level 10mA @ 24V mA
insulation voltage 2500 V
rms
Logical outputs
number 4
type opto-insulated static relays
max current @ 40°C 0.4 A
max voltage in open state 55 V
resistance in ON state 2 Ω
insulation voltage 2500 V
rms
Metrological characteristics
analog input signal range 7.8 ... 500 mV/V
typical temperature offset drift
@ input signal range <7,8 mV/V 1.5 ppm/°C
typical slope temperature effect 2 ppm/°C
max linearity error 0.003 %
A/D conversion rate 1920 .... 6.25 meas./s
Programmable functions
acquisition of zero, taring, zero tracking
physical or theoretical calibration
slope correction
non-linearity polynomial correction
low-pass, band-stop and self-adaptive digital filters
set points (up to 4) management
dosing (by filling or by unloading) processes control

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2 INTERFACES :
2.1 Connection to power supply :
The ‘POWER’ light on the board shows wheter or not the power supply is correctly connected.
2.2 Connection to load cell(s) :
eNod3-Dsupplies power to the load cells (5 V
DC
).
Up to four 350Ωload cells can be connected in parallel.
eNod3-D allows the use of 4- or 6- wire load cells.
- 4-wire load cells : jumpers in place
- 6-wire load cells : jumpers removed
Power supply
10 to 28V DC
PWR
+
PWR
REF
POWER
_
+
2
1
4/6- wire jumpers
ON
: 4 wires
OFF : 6 wires
Exc+
Sens+
Exc-
Sens-
Sig+
Sig-
Shield
1
2
3
4
5
6
7

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2.3 Connection of inputs and outputs :
2.3.1 Digital inputs
 connection to a detector :
 connection to a push button (PB) :
2.3.2 Digital outputs
Opto-insulated inputs characteristics
high level 9 to 28V
DC
– Consumption : 10mA @ 24VDC
low level 0 to 3 V
DC
Opto-insulated outputs characteristics
max currect @ 40°C 0.4 A
max voltage in open state 55 V
resistance in the ON state 2 Ω
insulation voltage 2500 V
rms
OUT 4
OUT 3
OUT 2
OUT 1
OUT
COM
IN 2 –
IN 2 +
IN 1 –
IN 1 +
1
8
9
7
6
5
4
3
2

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A light is assgined to each output.
3 COMMUNICATION INTERFACES :
eNod3-D is capable of communicating with an automatic control for each connection :
- RS485 / 422
- RS232
- CAN
The connection to the RS 485 / RS 422 interface is made through TA, TB and RA, RB connections on the 9-pins
connector. (TA = direct transmission, TB = inverse transmission, RA = direct reception, RB = inverse reception).
For an RS485 (half duplex) communication, just connect the TB and TA pins and remove the corresponding jumper
(OFF).
For an RS422 or RS485 full-duplex communication, use the four TB, TA, RB and RA pins. The corresponding jumper
must be in place (ON) (which is the default case on delivery).
The RS232 interface is connected using Tx, Rx and REF connections on the 9-pin connector.
CAN/RS jumper ON
CAN/RS jumper OFF
RS485 jumper
ON : Full duplex
OFF : Half duplex
CAN / RS jumper
ON : RS
OFF : CAN
TB
TA
RB
RA
Rx
TX
REF
CANL
CANH
RS232
CAN
RS485
Half/Full
communication
9
7
6
5
4
3
2
1
8
+
-
55 V
DC
max
OUT
COM
OUT
Load
+
-
55 V
DC
max
OUT
COM
OUT
Load
OUT
COM
OUT
Load
38 V
AC
max

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The CAN interface is connected using the CANH, CANL and REF (not mandatory) connections on the 9-pin
connector.
4 COMMUNICATION :
eNod3-D can communicate using several protocols :
- ModBus RTU
- SCMBus standard format or fast format.
- CANopen
 Switching from the SCMBus protocol to the ModBus-RTU protocol (and reciprocally) can be done
by software programmation.
1) send the corresponding command
2) send the ‘storage in EEPROM’ command
3) reset (hardware or software)the device
See example describing how to switch from ModBus-RTU to SCMBus protocol in the document
SCMBUS communication Ref 165 756 Appendix A.
 Switching from SCMBus/ModBus-RTU protocol to CANopen protocol (and reciprocally) can be
done by setting or removing the appropriate jumper (cf. §3) then by making a reset
4.1 ModBus RTU :
See the descritption of the different communication frames in the document : ModBus-RTU
communication Ref. 165754
4.2 SCMBus :
See the descritption of the different communication frames in the document : SCMBus communication
Ref. 165756.
The SCMBus protocol has got similarities with ModBus-TU. It is based on the master/slave structure
however it allows to transmit measurements continuously without collision management on the line. This
operating mode is only available in transmitter functioning mode.
The measurements transmission frequency depends on the serial baud rate thus transmitting 100 meas/s
is impossible at less than 19200 bauds. For fast measurement transmissions, use the fast SCMBus
format with wich 1200 meas/s can be expected at 115200 bauds.
Other methods of transmitting information without any master request :
- transmitter mode : measurement transmission triggered by a digital input.
- whatever the functioning mode is, physical calibration procedure : automatic transmission when
a step in the process is complete.
4.2.1 Fast SCMBus format :
The fast SCMBus format is particularly useful for measurement acquisition at the highest rate, for
example in order to analyze dynamic phenomena. This format should only be used for point-to-point
opreation in full-duplex.
So as to optimize the speed, in addition to using the fast SCMBus format, it is preferable to configure
eNod3-D in ‘non-processing transmitter’. In his operating mode, filters are disabled, set points are not
managed and there is no polynomial linearization.
4.3 CANopen :
eNod3-D supports CANopen communication protocol and is compliant with ‘CiA Draft Standard V301’.
Refer to the decription note : CANopen communication Ref. 165758.

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5 CALIBRATION :
5.1 Calibration types :
There are different possible calibration types (see examples in the documents : communication
SCMBus Réf. 165 756’ Appendix A and communication ModBus RTU Réf. 165 754 Appendix A) :
 Physical calibration using known references on the load cell. This type of calibration can be done
with 1, 2 or 3 known loads.
 Theoretical adjustment by setting the load cell sensitivity and a corresponding capacity.
 Correction of the initial calibration value with a coefficient.
5.2 Non-linearity correction
For an installation with a non-linearity :
The linearization formula is as follows
The three A, B and C coefficients can be determined using eNodView software.
Corrected measurement = Meas – A (Meas)
2
– B(Meas) – C
where Meas = current measurement
Fig. 1

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6 INPUTS FUNCTIONING :
Each input can work in positive or negative logic individually. A debounce time attached to both inputs
can be adjusted.
6.1 Inputs assignement :
Function Functioning mode
transmitter dosing by filling dosing by unloading
none ●●●
tare ●●●
zero ●●●
transmit measurement ●
measurement window ●
clear ●
start/restart cycle ●●
stop cycle ●●
suspend current cycle ●●
6.2 Functions independant of the functioning mode :
- none : Inputs have no effect.
- tare : one or the other or both inputs can be assigned to the tare function. The tare acquisition is
conditioned by a stability criterion that can be changed or inhibited.
Depending on the choosen logic (positive or negative), the tare is triggered by a rising or a falling edge.
- zero : one or the other or both inputs can be assigned to the zero function.
A new volatile zero value is acquired only if its value is within ±10% range of the specified capacity. The
zero acquisition is conditioned by a stability criterion that can be changed or inhibited.
Depending on the choosen logic (positive or negative), the tare is triggered by a rising or a falling edge.
6.3 Functions specific to each functioning mode :
See corresponding sections for a complete description.

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7 OUTPUTS FUNCTIONING :
Each output can work individually in its own logic.
7.1 Outputs assignement :
function Functioning mode
transmitter dosing by filling dosing by unloading
set point ●●●
motion ●●●
defective measurement ●●●
dosing result available ●●
cycle in progress ●●
input image ●●●
fine feed ●●
coarse feed ●●
emptying ●
reloading ●
out of tolerances ●●
flow rate failure ●●
dosing failure ●●
7.2 Functions independant of the functioning mode :
- set point : the outputs can be assigned to configurable set points (cf. §8) Output 1 is assigned to set
point 1 , output 2 to set point 2, output 3 to set point 3 and output 4 to set point 4.
-Motion : The outputs can be assigned to copying measurements stability.
-Defective measurement : The outputs can be assigned to copying the measurements faults.These faults
are also coded in the status word :
∗ Signal outside the converter analog input range
∗ Signal outside the capacity on the positive side
∗ Signal outside the capacity on the negative side
- Input image : Outputs can be assigned to copying inputs state, either using the same logic or inverting
the input state (negative logic). Outputs 1 and 3 are assigned to input 1 and outputs 2 and 4 are assigned
to input 2.
7.3 Functions specific to each functioning mode :
See corresponding sections for a complete description.

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7.4 Feeding mode in dosing processes
For the filling and dosing by unloading functioning modes, it is possible to select the activation order of
the feed outputs :
 coarse feed then fine feed after coarse feed stop
 coarse feed + fine feed at the beginning of the cycle
 coarse feed only
8 SET POINTS :
Set points are characterized by a high and a low value.
Their operating mode is either operating in hysteresis or operating in window.
The low and high values of these set points may be assigned either to (regardless of the functioning
mode) : - gross measurement
- net measurement
9 FILTERS :
There are four available filtering levels :
∗ filtering related to the A/D conversion rate including rejection of the mains frequency (50 or
60 Hz) harmonics.
∗ 2
nd
, 3
rd
or 4
th
order low-pass Bessel/Butterworth filter
∗ 2
nd
order band-stop filter
∗ self-adaptive filter
- Filtering related to the A/D conversion rate : the signal resolution is related to the conversion rate.
The conversion rate might be choosen as low as possible, particularly for static applications. For dynamic
applications, a compromise must be found between the measurement rate and the low-pass filter cut-off
frequency. The eNodView software can be used to determine appropriate filter values.
Choose a measurement rate that rejects the mains frequency harmonics according to the place of use, 50
or 60Hz.
-Bessel or Butterworth type low pass filter : a low-pass digital filter can be applied as an output of the
A/D converter. The filter order is configurable (available values are 2, 3 or 4) and the coefficients that
define it depend on the A/D conversion rate, the wanted cutt-off frequency and on the choosen order.
These coefficients can be easily calculated by eNodView software.
- Band-stop filter : a 2
nd
order band-stop filter might be applied as an output of the low-pass filter (if
used) or the A/D converter. It allows to attenuate the frequencies within a band defined by a high and a

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low cut-off frequencies. The coefficients that define it depend on the A/D conversion rate and the wanted
cutt-off frequencies (that means the frequency band width). These coefficients can be easily calculated by
eNodView software.
- Self-adaptive filter : this filter can be set in cascade after previous filters. It is particularly efficient for
static measurements but avoid using it in dynamic or dosing processes. The aim of this filter is to
eliminate erratic measurements and to average consistent measurements.
10 TRANSMITTER FUNCTIONING MODE :
This basic functioning mode consists in transmitting measurements on the bus, possibly after configuring
them, filtering them and comparing them to set point levels.
Measurements can be transmitted individually regardless of the communication protocol or continuously
at a defined frequency in SCMBus (standard or fast format) or CANopen protocols.
Functioning may be unipolar (positive analog signal only) or bipolar (positive or negative analog signal).
10.1 Measurement reading request :
10.1.1 Single measurement transmission :
Regarless of the communication protocol in use.
The request can apply to :
- gross measurement
- net measurement
- tare value
- measurement in A/D converter points
10.1.2 Continuous measurement transmission
This is possible using standard or fast SCMBus format, the transmission can be started by a serial
command and another one allows stopping it. Measurements are transmitted at a period defined in ms by
the ‘sampling period’ setting.
The request can apply to
- gross measurement
- net measurement
- measurement in A/D converter points
 Note : This is very similar to operation of ‘Measurement window’ through an input command.
CANopen protocol also allows to define a period at which measurements are sent on the bus without any
master request.
10.2 Specific commands through an input :
10.2.1 Transmit measurement (Fig. 4)
This is only possible using standard or fast SCMBus format or CANopen protocols. The request can
apply to : - gross measurement
- net measurement
- measurement in A/D converter points
A single measurement is transmitted per rising or falling edge (depending on the configured logic) on the
input signal.
Fig. 4

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10.2.2 Measurement window (Fig. 5)
This is only possible using standard or fast SCMBus. The request can apply to :
- gross measurement
- net measurement
- measurement in A/D converter points
While the input is kept at the right level, a series of measurements are transmitted at the period defined by
the ‘samplng period’ setting.
10.2.3 Clear
Cancels current tare (same functioning as ‘cancel tare’ command).
Fig. 5

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11 DOSING BY FILLING FUNCTIONING MODE :
The filling functioning mode is a way to monitor a dosing cycle of a product by measuring the weight of a
receptacle placed on a load cell.
In this functioning mode, the dosing process is entirely managed by eNod3-D and especially thanks to its
four digital outputs allowing to monitor the different phases of the cycle and to indicate errors.
Fig. 6 and 7 shown below represent graphically how a filling cycle is working and what is the influence of
the variables involved.
Fig. 6 : filling cycle without emptying phase
coarse feed
fine feed
cycle in progress
emptying
dosing result available
start cycle
Time
Measure
1
4
3
2
25
7
target weight
(target weight – fine feed level)
(target weight – inflight weight)
min empty weight
max empty weight

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∗ 1: start delay
∗ 2 : motion time out
∗ 3 : coarse feed effect neutralization time
∗ 4 : fine feed effect neutralization time
∗ 5: final stabilization time
∗ 6: emptying holding time
∗ 7 : end of cycle waiting time
11.1 Starting conditions
After the reception of a ‘start cycle’ command or the activation (rising or falling edge depending on the
logic) of a digital input assigned to this function, the filling cycle starts as soon as the ‘start delay’ has
elapsed. It also causes an output assigned to the ‘cycle in progress’ function to be set.
Time
Fig. 7
: complete filling cycle with
emptying phase
start cycle
coarse feed
fine feed
cycle in progress
emptying
dosing result available
Measure
1
4
3
2
25
6
taget weight
(target weight – fine feed level)
(target weight – inflight weight)
emptying end level
min empty weight
max empty weight
7

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The following tab recaps the possible cases encoutered when starting a cycle :
automatic
taring at start
restart if
suspended
authorization weight value action
min empty weight < gross weight < max empty
weight
regardless the gross weight value IF
min empty weight = max empty weight = 0
taring then start
other case cycle cancelled,
error reporting
active
allowed regardless the gross weight value IF last cycle
was suspended
cycle recovery
from last step
(taring possible)
min empty weight < gross weight < max empty
weight
regardless the gross weight value IF
min empty weight = max empty weight = 0
no tare, starting
from the net
current value
other case cycle cancelled,
error reporting
inactive
allowed regardless the gross weight value IF last cycle
was suspended
cycle recovery
from last step
(no tare)
11.2 Cycle description
11.2.1 Flow rate control (optional)
eNod3-D includes a flow rate control system. It makes possible to check that the flow rate during the
cycle is sufficient. The device controls that te flow rate remains equal or superior to a minimal value. If it is
not the case, an output assigned to ‘dosing failure’ or ‘flow rate failure’ is set and the cycle is suspended if
the cycle recovery option is active else it is stopped.
The flow rate control is defined by two parameters :
∗ a time interval (if = 0, the flow rate control is not used)
∗ a minimal weight variation
11.2.2 Automatic taring at start
If the ‘automatic taring at start’ option is active, as soon as the ‘start delay’ has elpased, the tare
acquisition is done if measurements are stable. If at the end of the ‘motion time out’ timer, no stability can
be found, the tare value is equal to the last net current value.
11.2.3 Coarse feed effect neutralization time
This delay defined in millseconds allows to ignore the effect of the coarse feed starting on the
measurement signal and especially the product impact into the receptacle. During this timer, the flow rate
control and the level comparisons are inhibited.
11.2.4 Fine feed level
If the level (target weight – fine feed) is crossed the ‘coarse feed’ output is immediately disabled. It is
ignored if only the coarse feed is used (cf. §7.4).
11.2.5 Fine feed effect neutralization time
This delay defined in millseconds allows to ignore the effect of the coarse feed ending on the
measurement signal and especially the changing in the flow rate. During this timer, the flow rate control
and the level comparisons are inhibited.

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11.2.6 Target weight and inflight weight
The ‘fine feed’ disabling occurs when the level (target weight – inflight level) is crossed. The inflight
weight value allows therefore to quantify the weight of product that carries on falling after the output
inhibition and so to avoid a systematic overoload of the receptacle.
This value can be automatically adjusted, the correction amplitude is affected by a percentage that can be
configured. It is also possible to have a stronger correction (x 3) as the result is outside the fixed
tolerances (cf. §11.2.8).
11.2.7 Final stabilization time
This timer corresponds to the minimal necessary duration for the stabilization of the weight before the
determination of the result and the control of tolerances.
When it is over, the ‘motion time out’ timer begins. If the stability can not be found within this duration, the
dosing result compared to the tolerances is equal to the last net measurement value.
11.2.8 Tolerances
The dosing result is compared to 2 limit values in order to check that it is included within an acceptable
range. ∗ a high tolerance (tolérance +) or tolerance in excess :
 if the difference |(target weight – dosing result) > tolérance + |
where (target weight – dosing result) < 0, the ‘out of tolerances’ and ‘dosing failure’
outputs are activated.
∗ a low tolerance (tolérance -) or tolerance in default :
 if the difference |(target weight – dosing result) > tolérance - |
where (target weight – dosing result) > 0, the ‘out of tolerances’ and ‘dosing failure’
outputs are activated. If the ‘use FF if out of low tolerance -’ is active, the fine feed is
restarted.
If the updated result is out of tolerances and if the ‘automatic inflight correction’ option is active the inflight
weight value is corrected according to the equation :
Once the dosing result is updated and compared to the tolerances an output assigned to the ‘dosing
result available’ is set. Then, the cycle ends after the ‘end of cycle waiting time’ or the emptying phase
begins.
11.2.9 End of emptying level and emptying holding time
During the emptying phase, an output assigned to the ‘emptying’ function remains active until the
‘emptying holding time’ has elpased after that gross measurement has become inferior to the ‘end of
emptying level’.
11.2.10 End of cycle waiting time
This timer is triggered after ther control of tolerances if the emptying phase is not used else it takes place
just after the ‘emptying holding time’.
11.2.11 Effective end of cycle
When the ‘end of cycle wating time’ is over, an output assigned to the ‘cycle in progress’ function is
disabled and the statistic variables (number of cycles, average value, running total and standard
deviation) are updated.
11.3 Digital inputs utilization
11.3.1 Start cycle
If all the starting conditions are respected (cf. §11.1), a rising or a falling edge (depending on the
configured logic) on this input causes a new feeding cycle to be started else an error is reported by a
‘dosing failure’ output and into a read-only diagnostic register.
11.3.2 Suspend current cycle
This input function has got two different effects :
∗ if the ‘relaunch cycle if suspended’ option is inactive : this edge-active input causes the
feeding cycle to be stopped inhibiting the different outputs involved.
inflight weight = inflight weight + (dosing result
–
target correction) x correction coeff

e
eN No od d3 3- -D D
D Di ig gi it ta al l d do os si in ng g c co on nt tr ro ol ll le er r
eNod3-D: User’s instructions 165 752-A20/23
∗ else the cycle is suspended until a new request of starting the cycle that causes the cycle to
continue from its last step.
11.3.3 Stop cycle
This edge-active input causes the feeding cycle to be stopped inhibiting the different outputs involved.
12 DOSING BY UNLOADING FUNCTIONING MODE :
The dosing by unloading functioning mode is a way to monitor a dosing cycle of a product by measuring
the weight in loss from a tank equiped with a load cell. In this functioning mode, the dosing process is
entirely managed by eNod3-D and especially thanks to its four digital outputs allowing to monitor the
different phases of the cycle and to indicate errors.
Fig. 8 and 9 shown below represent graphically how a dosing by unloading cycle is working and what is
the influence of the variables involved.
Measure
reloading max. level
Time
Fig. 8 : dosing by unloading cycle with reloading phase at the end of the cycle
coarse feed
fine feed
cycle in progress
reloading
dosing result available
start cycle
1 6
4
2
2
5
target weight
(target weight – fine feed level))
(target weight – inflight weight)
reloading min. level
reference weight
3
dosing result
7