IFM SM4x00 User manual

Operating instructions
Magnetic-inductive flow meter
SM4x00
SM6x00
SM7x00
SM8x00
SM6x01
SM7x01
SM8x01
80224865 / 00 02 / 2018
UK

2
Contents
1 Preliminary note���������������������������������������������������������������������������������������������������4
2 Safety instructions �����������������������������������������������������������������������������������������������4
3 Functions and features ����������������������������������������������������������������������������������������5
4 Function���������������������������������������������������������������������������������������������������������������5
4�1 Processing of the measured signals��������������������������������������������������������������6
4�2 Direction of flow ���������������������������������������������������������������������������������������������6
4�2�1 Determination of the direction of flow (Fdir)������������������������������������������6
4�2�2 Detection of the direction of flow (dir�F) ������������������������������������������������7
4�3 Consumed quantity monitoring (ImP) ������������������������������������������������������������7
4�3�1 Display and counting method of the quantity meter �����������������������������8
4�3�2 Consumed quantity monitoring via pulse output�����������������������������������8
4�3�3 Consumed quantity monitoring via preset counter �������������������������������9
4�4 Switching function����������������������������������������������������������������������������������������10
4�5 Analogue function ���������������������������������������������������������������������������������������� 11
4�6 Measured value damping (dAP) ������������������������������������������������������������������13
4�7 Start-up delay (dST) ������������������������������������������������������������������������������������13
4�8 Low flow cut-off (LFC)����������������������������������������������������������������������������������15
4�9 IO-Link ���������������������������������������������������������������������������������������������������������15
5 Mounting������������������������������������������������������������������������������������������������������������16
5�1 Recommended installation position�������������������������������������������������������������16
5�2 Not recommended installation position��������������������������������������������������������17
5�3 Grounding����������������������������������������������������������������������������������������������������18
5�4 Installation in pipes ��������������������������������������������������������������������������������������19
6 Electrical connection������������������������������������������������������������������������������������������20
7 Operating and display elements ������������������������������������������������������������������������22
8 Menu������������������������������������������������������������������������������������������������������������������24
9 Set-up ����������������������������������������������������������������������������������������������������������������26
10 Parameter setting ��������������������������������������������������������������������������������������������26
10�1 Parameter setting in general ���������������������������������������������������������������������27
10�1�1 Change to the menu "Extended functions"���������������������������������������27
10�1�2 Locking / Unlocking ��������������������������������������������������������������������������28
10�1�3 Timeout���������������������������������������������������������������������������������������������28

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10�2 Settings for volumetric flow monitoring������������������������������������������������������28
10�2�1 Limit monitoring volumetric flow (OUT1) ������������������������������������������28
10�2�2 Limit monitoring volumetric flow (OUT2) ������������������������������������������28
10�2�3 Analogue output flow rate (OUT2) ����������������������������������������������������28
10�2�4 Detection of the direction of flow (OUT1 or OUT2)���������������������������28
10�3 Settings for consumed quantity monitoring �����������������������������������������������29
10�3�1 Quantity monitoring by pulse output (OUT1) ������������������������������������29
10�3�2 Quantity monitoring by preset counter (OUT1)���������������������������������29
10�3�3 Pulse value ���������������������������������������������������������������������������������������29
10�3�4 Manual counter reset������������������������������������������������������������������������29
10�3�5 Time-controlled counter reset �����������������������������������������������������������29
10�3�6 Deactivation of the counter reset������������������������������������������������������30
10�3�7 Counter reset using an external signal ���������������������������������������������30
10�4 Settings for temperature monitoring ����������������������������������������������������������30
10�4�1 Limit monitoring temperature (OUT2)�����������������������������������������������30
10�4�2 Analogue output temperature (OUT2) ����������������������������������������������30
10�5 User settings (optional)������������������������������������������������������������������������������30
10�5�1 Standard unit of measurement for volumetric flow ���������������������������30
10�5�2 Standard display�������������������������������������������������������������������������������31
10�5�3 Output logic ��������������������������������������������������������������������������������������31
10�5�4 Start-up delay �����������������������������������������������������������������������������������31
10�5�5 Measured value damping �����������������������������������������������������������������31
10�5�6 Error behaviour of the outputs ����������������������������������������������������������31
10�5�7 Low flow cut-off���������������������������������������������������������������������������������32
10�5�8 Counting method of the totaliser�������������������������������������������������������32
10�5�9 Direction of flow ��������������������������������������������������������������������������������32
10�6 Service functions ���������������������������������������������������������������������������������������32
10�6�1 Read min/max values �����������������������������������������������������������������������32
10�6�2 Restoring the factory settings �����������������������������������������������������������32
11 Operation ���������������������������������������������������������������������������������������������������������33
11�1 Reading the process value ������������������������������������������������������������������������33
11�2 Changing the process value display in the RUN mode������������������������������33
11�3 Reading the set parameters�����������������������������������������������������������������������33
12 Troubleshooting �����������������������������������������������������������������������������������������������34
13 Technical data��������������������������������������������������������������������������������������������������35
14 Factory setting ������������������������������������������������������������������������������������������������36

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1 Preliminary note
►Instructions
> Reaction, result
[…] Designation of keys, buttons or indications
→Cross-reference
Important note
Non-compliance may result in malfunction or interference�
Information
Supplementary note�
CAUTION
Warning of personal injury�
Slight reversible injuries may result�
2 Safety instructions
• Read this document before setting up the product and keep it during the entire
service life�
• The product must be suitable for the corresponding applications and environ-
mental conditions without any restrictions�
• Only use the product for its intended purpose (→ 3 Functions and features)�
• Only use the product for permissible media (→ Technical data).
• If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur�
• The manufacturer assumes no liability or warranty for any consequences
caused by tampering with the product or incorrect use by the operator�
• Installation, electrical connection, set-up, operation and maintenance of the unit
must be carried out by qualified personnel authorised by the machine operator�
• Protect units and cables against damage�
• For medium temperatures above 50 °C (122 °F) some parts of the housing can
heat up to over 65 °C (149 °F)� Moreover, during installation or in case of a fault
(e�g� housing damage) media under high pressure or hot media can leak from
the system� To avoid personal injury, take the following measures:

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►Install the units according to the applicable rules and regulations�
►Ensure that the system is free of pressure during installation�
►Protect the housing against contact with flammable substances and uninten-
tional contact� To do so, equip the units with suitable protection (e�g� protective
cover)�
►Do not press the pushbuttons manually� instead use another object (e�g�
ballpoint pen)�
3 Functions and features
The unit monitors liquid media� It detects the 3 process categories volumetric flow,
consumed quantity, medium temperature�
Pressure Equipment Directive (PED)
The units comply with the Pressure Equipment Directive and are designed and
manufactured for group 2 fluids in accordance with the sound engineering prac-
tice� Use of group 1 fluids on request�
Application area
Conductive liquids with the following properties:
• Conductivity: ≥ 20 µS/cm
• Viscosity: < 70 mm2/s at 40 °C; < 70 cSt at 104 °F
4 Function
• The unit detects the flow based on the magnetic-inductive volumetric flow
measuring principle�
• The unit also detects the medium temperature�
• It features an IO-Link interface�
• The unit displays the current process value�

6
4.1 Processing of the measured signals
The unit generates 2 output signals according to the parameter settings:
OUT1/IO-Link: 4 selection options Parameter setting
- Switching signal for volumetric flow quantity limit → 10.2.1
- Pulse signal for quantity meter → 10.3.1
- Switching signal for preset counter → 10.3.2
- Switching signal for direction of flow → 10.2.4
OUT2: 6 selection options Parameter setting
- Switching signal for volumetric flow quantity limit → 10.2.2
- Switching signal for temperature limit → 10.4.1
- Analogue signal for volumetric flow quantity → 10.2.3
- Analogue signal for temperature → 10.4.2
- Switching signal for direction of flow → 10.2.4
- Input for external counter reset signal (InD) → 10.3.7
4.2 Direction of flow
In addition to the flow velocity and the volumetric flow quantity, the unit also de-
tects the direction of flow�
4.2.1 Determination of the direction of flow (Fdir)
An arrow with the text "flow direction" on the unit indicates the positive flow direc-
tion� The flow direction can be inversed (→ 10.5.9)�
►Use the supplied label to mark the changed flow direction (new positive
direction of flow)�
Flow... Process value display
corresponds to the marked flow direction + (positive)
against the marked flow direction - (negative)

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4.2.2 Detection of the direction of flow (dir.F)
When dir�F is activated (→ 10.2.4), the direction of flow is indicated by a switching
signal�
The output is switched on until the set minimum volumetric flow quantity in nega-
tive direction of flow (- LFC) is not reached (1)�
Afterwards the following applies:
- The output switches ON when + LFC is exceeded (2)�
- The output switches OFF when - LFC is not reached (3)�
+ LFC
+ Q
- Q
- LFC
1
0
1 2 3
+ Q : Flow in positive direction of flow
- Q : Flow in negative direction of flow
+ LFC: Minimum volumetric flow quantity in positive direction of flow
- LFC : Minimum volumetric flow quantity in negative direction of flow
Positive direction of flow = marked direction of flow,
with the factory setting marked by the arrow on the unit or after change via Fdir
marked by the attached label (→ 4.2.1)�
4.3 Consumed quantity monitoring (ImP)
The unit has an internal quantity meter (totaliser)� It continuously totals the
consumed quantity after the last reset� Pulse signals or a switching signal can be
used to monitor the consumed quantity�
→ 10.3.1 Quantity monitoring by pulse output (OUT1)
→ 10.3.2 Quantity monitoring by preset counter (OUT1)

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4.3.1 Display and counting method of the quantity meter
Meter reading:
• The current meter count can be indicated (→ 11.2)�
• In addition the value before the last reset is saved� This value can also be
displayed (→ 11.2)�
The meter saves the totalled volumetric flow quantity every 10 minutes�
After a power failure this value is available as the current meter reading� If a
time-controlled reset is set, the elapsed time of the set reset interval is also
saved� So the possible data loss can be maximum 10 minutes�
Counter reset:
• There are different ways to reset the quantity meter�
→ 10.3.4 Manual counter reset
→ 10.3.5 Time-controlled counter reset
→ 10.3.7 Counter reset using an external signal
• If the quantity meter is not reset using one of the above-mentioned processes,
an automatic reset will be made when the maximum volumetric flow quantity
that can be displayed is exceeded (overflow)�
Taking into consideration the direction of flow:
• The quantity meter takes account of the flow direction for totalisation� The fol-
lowing counting methods can be defined via the parameter [FPro] (→ 10.5.8):
[FPro] Counting method
0+ Negative flow values (against the marked direction of flow) are not taken
into consideration for totalling�
– + Negative flow values are subtracted from the consumed quantity�
4.3.2 Consumed quantity monitoring via pulse output
Output 1 indicates a pulse signal when the set volumetric flow quantity has been
reached (pulse value → 10.3.3)�
Depending on the setting of the counting method [FPro] totalling of the volumetric
flow quantity takes into account the flow in negative direction of flow (– +) or does
not take it into account (0+) → 4.3.1�

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ImpFPro = – +
Imp
FPro = 0 +
+ Q
t
t
- Q
V
+ Q = volumetric flow quantity in positive direction
- Q = volumetric flow quantity in negative direction
V = volumetric flow quantity absolute (= sum of negative and positive flow)
4.3.3 Consumed quantity monitoring via preset counter
2 kinds of monitoring are possible which can be set via the parameter [rTo]�
[rTo] Output Counter reset
OFF
(→ 10.3.6)
OUT1 switches when the volumetric
flow quantity set with [ImPS] has
been reached�
The preset counter is only reset
- when a manual reset is made (→
10�3�4) or
- when the maximum display range
has been exceeded�
1, 2,��� h
1, 2,��� d
1, 2,��� w
(→ 10.3.5)
OUT1 switches when the volumetric
flow quantity set with [ImPS] is
reached within the set time�
The preset counter is reset auto-
matically when the time has elapsed
and counting starts again�

10
4.4 Switching function
OUTx changes its switching status if it is above or below the set switching limits
(flow or temperature)� Hysteresis or window function can be selected� Example of
volumetric flow monitoring:
Hysteresis function Window function
SP
rP
SP = set point
rP = reset point
HY = hysteresis
Hno = hysteresis NO (normally open)
Hnc = hysteresis NC (normally closed)
SP = upper limit
rP = lower limit
FE = window
Fno = window NO (normally open)
Fnc = window NC (normally closed)
When the hysteresis function is set, the set point [SP] is defined first and
then the reset point [rP] which must have a lower value� If only the set point
is changed, the reset point remains constant�
When set to the window function, the upper limit [SP] and the lower limit
[rP] have a fixed hysteresis of 0�5 % of the final value of the measuring
range� This keeps the switching status of the output stable if the flow rate
varies slightly�

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4.5 Analogue function
• The unit provides an analogue signal that is proportional to the volumetric flow
quantity and the medium temperature�
• The analogue signal can be provided as current or voltage signal�
• Within the measuring range the analogue signal is 4���20 mA (current output) or
0���10 V (voltage output)�
• If the measured value is outside the measuring range or in the event of an
internal error, the current or voltage signals indicated in Figure 1 are provided�
• The measuring range is scalable:
[ASP2] determines at which measured value the output signal is 4 mA or 0 V�
[AEP2] determines at which measured value the output signal is 20 mA or 10 V�
Minimum distance between [ASP2] and [AEP2] = 20 % of the final value
of the measuring range�
MAW Initial value of the measuring range For non-scaled measuring range
(= factory setting)
MEW Final value of the measuring range
ASP2 Analogue start point For scaled measuring range
AEP2 Analogue end point
Table 1: Definitions

12
MEWMAW AEPASP
-120Q [% MEW]
[°C]T -40 -20 80 100 110
-130
-50
[°F]-40 -4 176 212 230-58
120
1000 130
4
3,50FOU=OFF
20
21,5
22
[mA]
0
10
11,5
12FOU=On
[V]
1
2
5
4
6
5*
6*
3
cr�UL UL OL cr�OL
Figure 1: Characteristics of the analogue output according to the standard IEC 60947-5-7�
Q: Flow (a negative flow value means flow against the marked flow direction)
T: Temperature
UL: Below the display range
OL: Above the display range
cr�UL: Below the detection zone (error)
cr�OL: Above the detection zone (error)
FOU=On: Default setting at which the analogue signal goes to the upper final value in
case of an error�*
FOU=OFF: Default setting at which the analogue signal goes to the lower final value in
case of an error�*
* The type of error is displayed: cr�UL, cr�OL, Err (→ 12)�
1
Analogue signal (voltage or current)
2
Measured value (flow or temperature)
3
Detection zone
4
Display range
5
Measuring range
5*
Analogue signal in the measuring range
with factory setting
6
Scaled measuring range
6*
Analogue signal for scaled measuring
range

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4.6 Measured value damping (dAP)
The damping time allows to set after how many seconds the output signal has
reached 63 % of the final value if the flow value changes suddenly� The set damp-
ing time stabilises the outputs, the display and the process value transfer via the
IO-Link interface� The signals [UL] and [OL] (→ 12 Troubleshooting) are defined
under consideration of the damping time�
4.7 Start-up delay (dST)
The start-up delay [dST] influences the switching outputs of the volumetric
flow monitoring�
If the start-up delay is active ([dST] > [0]), note: As soon as the volumetric flow
exceeds the LFC value (→ 4.8), the following processes are carried out:
> The start-up delay is activated�
> The outputs switch as programmed: ON for NO function, OFF for NC function�
After the start of the start-up delay there are 3 options:
1� The volumetric flow increases quickly and reaches the set point / good range
within [dST]�
> Outputs remain active�
2� The volumetric flow increases slowly and does not reach the set point /good
range within [dST] > Outputs are reset�
3� Volumetric flow quantity falls below [LFC] within [dST]�
> Outputs are reset at once; [dST] is stopped�

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Example: dST for hysteresis function
Condition Reaction
1 Volumetric flow quantity Q reaches LFC dST starts, output becomes active
2 dST elapsed, Q reached SP Output remains active
3 Q below SP but above rP Output remains active
4 Q below rP Output is reset
5 Q reaches again LFC dST starts, output becomes active
6 dST elapsed, Q has not reached SP Output is reset
7 Q reaches SP Output becomes active

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Example: dST for window function
Condition Reaction
1 Volumetric flow quantity Q reaches LFC dST starts, output becomes active
2 dST elapsed, Q reached good range Output remains active
3 Q above SP (leaves good range) Output is reset
4 Q again below SP Output becomes active again
5 Q below rP (leaves good range) Output is reset again
6 Q reaches again LFC dST starts, output becomes active
7 dST elapsed, Q has not reached good
range
Output is reset
8 Q reaches good range Output becomes active
4.8 Low flow cut-off (LFC)
With the function Low Flow cut-off small volumetric flow quantities can be sup-
pressed (→ 10.5.7)� Flows below the LFC value are evaluated by the sensor as
standstill (Q = 0)�
4.9 IO-Link
This unit has an IO-Link communication interface which enables direct access to
process and diagnostic data� In addition it is possible to set the parameters of the
unit during operation� Operation of the unit via IO-Link interface requires an IO-
Link capable module (IO-Link master)�
With a PC, suitable IO-Link software and an IO-Link adapter cable communication
is possible when the system is not in operation�

16
For the IODDs necessary for the configuration of the unit, detailed information
about process data structure, diagnostic information, parameter addresses and
the necessary information about the required IO-Link hardware and software visit
www�ifm�com�
5 Mounting
►Ensure that the system is free of pressure during installation�
►Ensure that no media can leak at the mounting location during installa-
tion�
►Attach the supplied warning label to the sensor cable�
The unit can be installed independently of the orientation if the following is
ensured:
- No air bubbles can form in the pipe system�
- The pipes are always completely filled�
5.1 Recommended installation position
►Install the unit so that the measuring pipe is always completely filled�
►Arrange for inlet and outlet pipe lengths� Disturbances caused by bends,
valves, reductions, etc� are compensated for� It applies in particular: no shut-off
and control devices are allowed directly in front of the unit�
5 x D
F
S
2 x D
S
S = disturbance (e�g� shut-off / control device, pump, bends)
D = pipe diameter
F = direction of flow

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►Install in front of or in a rising pipe�
F
F
5.2 Not recommended installation position
►Avoid the following installation positions:
F
F
Directly in front of a falling pipe� In a falling pipe�

18
F
F
Directly in front of
the spout of the pipe� On the suction side of a pump�
F
At the highest point
of the pipe system�
F = flow direction
5.3 Grounding
If installed in an ungrounded pipe system (e�g� plastic pipes), the unit must
be grounded (functional earth)�
Ground brackets for the M12 connector are available as accessories
→ www.ifm.com.

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5.4 Installation in pipes
The units with a G thread can be installed in the pipes using adapters�
Information about the available mounting accessories at www�ifm�com�
A correct fit of the unit and ingress resistance of the connection are only ensured
using ifm adapters�
A AD DC CB B
1� Grease the threads of the process connection, adapter and sensor� Use a
lubricating paste which is suitable and approved for the application�
2� Screw the adapter (B) into the pipe (A)�
3� Place the seals (C) and install the unit according to the marked flow direction�
4� Screw the adapter (B) with the threads (D) until it is hand-tight�
5� Tighten the two adapters in opposite direction:
Tightening torque: SM6/SM7/SM8 = 30 Nm; SM4 = 15 Nm�
After installation air bubbles in the system can affect the measurement�
►Corrective measures: Rinse the system after installation for ventilation�
In case of horizontal installation:
As a result of design requirements a small quantity of the medium always
remains in the measuring channel after switching off the pump�

20
6 Electrical connection
The unit must be connected by a qualified electrician�
The national and international regulations for the installation of electrical
equipment must be adhered to�
Voltage supply according to EN 50178, SELV, PELV�
►Disconnect power�
►Connect the unit as follows:
43
2 1
BK: black
BN: brown
BU: blue
WH: white
BN
WH
BK
BU
4
1
3
2OUT2
L+
L
OUT1
Colours to DIN EN 60947-5-2
Sample circuits:
2 x positive switching 2 x negative switching
L
L+
3 BU
4 BK
2 WH
1 BN
L
L+
3 BU
4 BK
2 WH
1 BN
1 x positive switching / 1 x analogue 1 x negative switching / 1 x analogue
L+
L
3 BU
4 BK
2 WH
1 BN
L+
L
3 BU
4 BK
2 WH
1 BN
This manual suits for next models
6
Table of contents
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