IFM DP2122 User manual

Operating instructions
Speed monitor
DP2122
80287374 / 0005 / 2021
GB

DP2122 Speed monitor
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Contents
1 Preliminary note.............................................................. 4
1.1 Symbols used........................................................... 4
1.2 Warnings used.......................................................... 4
2 Safety instructions............................................................ 5
3 Intended use ................................................................ 6
4 Function.................................................................... 7
4.1 Operating modes........................................................ 7
4.2 Application as an IO-Link device ............................................ 7
4.2.1 General information................................................... 7
4.2.2 Application example .................................................. 8
4.2.3 IO Device Description (IODD)........................................... 8
4.3 Standard IO wiring....................................................... 8
4.4 Function diagrams....................................................... 9
4.4.1 Single point mode.................................................... 9
4.4.2 Window mode....................................................... 9
4.4.3 Two point mode...................................................... 10
4.4.4 Deactivated mode.................................................... 11
4.4.5 Standard IO mode.................................................... 11
4.4.6 Switching delays..................................................... 11
4.4.7 Switch-off delay...................................................... 12
4.5 Start-up delay........................................................... 12
5 Installation .................................................................. 13
6 Electrical connection .......................................................... 14
6.1 Mounting the connector................................................... 15
6.2 Removing the connector .................................................. 15
6.3 Cable length............................................................ 15
7 Operating and display elements.................................................. 16
7.1 Push rings (pushbuttons).................................................. 16
7.2 LEDs ................................................................. 16
7.3 Display................................................................ 17
8 Menu ...................................................................... 18
8.1 General ............................................................... 18
8.2 Menu structure.......................................................... 19
8.2.1 Operating mode 1.................................................... 19
8.2.2 Operating mode 2.................................................... 20
8.3 Parameters of the main menu .............................................. 20
8.3.1 SSC1 ─ speed monitor OUT1........................................... 20
8.3.2 SSC2 ─ speed monitor OUT2........................................... 21
8.3.3 EF ─ extended functions............................................... 21
8.4 Parameters for OUT1 (SSC1) .............................................. 21
8.4.1 ModE ─ switch point mode............................................. 21
8.4.2 LoGc ─ switch point logic .............................................. 21
8.4.3 SP1 ─ switch point 1.................................................. 21
8.4.4 SP2 ─ switch point 2.................................................. 21
8.4.5 HyS ─ switch points hysteresis.......................................... 21
8.4.6 dS ─ switching delay.................................................. 22
8.4.7 dr ─ switch-off delay .................................................. 22
8.4.8 P-n ─ output configuration.............................................. 22
8.5 Parameters for OUT2 (SSC2) .............................................. 22
8.6 Parameters of the extended functions (EF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.6.1 rES ─ restore factory setting............................................ 22
8.6.2 Lo/Hi ─ min/max measured input values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.6.3 dSt ─ start-up delay time............................................... 22
8.6.4 ScAL ─ set decimal point .............................................. 22
8.6.5 C.FEP ─ custom user endpoint for frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.6.6 PrSC ─ prescaler..................................................... 23

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8.6.7 coLr ─ display colours and colour changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.6.8 cFH/cFL ─ upper/lower value for colour change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.6.9 diS.b ─ display power on............................................... 24
8.6.10 diS.U ─ refresh rate of the displayed measured value . . . . . . . . . . . . . . . . . . . . . . . . 25
8.6.11 CMPT ─ indication of the operating mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.7 Parameters adjustable via IO-Link........................................... 25
8.7.1 C.uni – customer-specific unit........................................... 25
8.7.2 FLASH_ON – activate flashing of the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.7.3 FLASH_OFF – deactivate flashing of the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.7.4 SSC counter – switching counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.7.5 internal_temperature – operating temperature microcontroller . . . . . . . . . . . . . . . . . . 25
8.7.6 operation_hours – operating hours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.7.7 Application-specific tag................................................ 26
8.7.8 Location tag ........................................................ 26
8.7.9 Function tag ........................................................ 26
9 Parameter setting............................................................. 27
9.1 Parameter setting in general ............................................... 27
9.1.1 Example [ModE] - switch point mode for OUT2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.2 Notes on programming.................................................... 28
9.2.1 Locking / unlocking ................................................... 28
9.2.2 Timeout............................................................ 28
9.2.3 Numerical entries with [▼] or [▲] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10 Operation................................................................... 29
11 Troubleshooting.............................................................. 30
12 Maintenance, repair and disposal ................................................ 31
13 Factory settings.............................................................. 32
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1 Preliminary note
You will find instructions, technical data, approvals and further information using the QR code on the
unit / packaging or at www.ifm.com.
1.1 Symbols used
Requirement
Instructions
Reaction, result
[...] Designation of keys, buttons or indications
Cross-reference
Important note
Non-compliance may result in malfunction or interference.
Information
Supplementary note
1.2 Warnings used
CAUTION
Warning of personal injury
wSlight reversible injuries may result.

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2 Safety instructions
• The unit described is a subcomponent for integration into a system.
– The system architect is responsible for the safety of the system.
– The system architect undertakes to perform a risk assessment and to create documentation in
accordance with legal and normative requirements to be provided to the operator and user of
the system. This documentation must contain all necessary information and safety instructions
for the operator, the user and, if applicable, for any service personnel authorised by the
architect of the system.
• 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 environmental conditions
without any restrictions.
• Only use the product for its intended purpose (Ò Intended use).
• 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, programming, configuration, operation and maintenance
of the product must be carried out by personnel qualified and authorised for the respective activity.
• Protect units and cables against damage.
• Replace damaged units, otherwise the technical data and safety will be impaired.
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3 Intended use
The unit is a pulse evaluation system. It monitors rotating, linear, vibrating or oscillating movements.
It receives the pulses from external sensors, measures the pulse interval and calculates the input
frequency. This value is compared with the set switch points; the outputs are switched in accordance
with the set parameters.
2
3
4 5
6 6
1
Fig.1: Example: speed monitoring of a drive shaft on a conveyor belt
1: Conveyor belt 2: Pulse pick-up on the drive shaft
3: DP2122 4: Transistor output (e.g. to control a light indicator, horn or
relay)
5: Transistor output / IO-Link 6: Signals depending on the selected switching function
The unit is not suited for environments with particular requirements on mechanical stability (e.g.
shock/vibration).
The unit is intended for indoor use only.
uObserve the operating conditions (Ò Technical data at www.ifm.com).

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4 Function
Depending on the setting of the IO-Link parameter [CMPT], the unit displays the current frequency in
Hz or the rotational speed in RPM. It generates output signals according to the operating mode and
the parameter setting. In addition, it makes the process data available via IO-Link (in Hz or RPM,
depending on the operating mode).
The unit is designed for half-duplex communication. So the following options are possible:
• Remote display: reading and displaying the current frequency/speed
• Remote parameter setting: reading and changing the current parameter setting
• IO-Link parameter setting: IO Device Description (IODD) (Ò/8)
4.1 Operating modes
The following operating modes are available:
Operating mode 1: HZ_M (default)
Description Displays the frequency in Hz
Application Standard applications with frequency measurement in Hz
IODD designation DP2122 Factory setting / (CMPT=HZ_M)
IO-Link device ID 1167 d / 00 04 8f h
IO-Link parameter CMPT HZ_M (default)
Operating mode 2: rpnM
Description Displays the frequency in revolutions per minute (RPM)
Application Converted values in RPM
IODD designation DP2122 Status_B / (CMPT=rpnM)
IO-Link device ID 1294 d / 00 05 0e h
IO-Link parameter CMPT rpnM
In operating mode 2, the display of the unit always shows kRPM.
Manual selection of the operating mode:
CMPT ─ indication of the operating mode (Ò/25) and ModE ─ switch point mode (Ò/21)
for OUT2
Selection of the operating mode via IO-Link interface:
see document "Addition to the operating instructions: Selecting the operating mode using an IO-
Link interface" at www.ifm.com
4.2 Application as an IO-Link device
4.2.1 General information
The unit has an IO-Link communication interface which requires an IO-Link capable module (IO-Link
master).
The IO-Link interface allows direct access to the process and diagnostic data and enables setting of
the parameters of the unit during operation.
You will find further information about IO-Link and all the necessary information about the required IO-
Link hardware and software at:
www.ifm.com/gb/io-link
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4.2.2 Application example
3
Fieldbus
5
1
2
4
6
Fig.2: Application example with IO-Link master
1: Conveyor belt and pulse pick-up 2: DP2122
3: Fully bidirectional IO-Link communication
- Remote parameter setting: reading and changing the pa-
rameter setting.
4: IO-Link master
5: Fieldbus (e.g. Profibus, Profinet etc.) 6: PLC
4.2.3 IO Device Description (IODD)
You will find the IODDs necessary for the configuration of the IO-Link device and detailed information
about process data structure, diagnostic information and parameter addresses at:
www.ifm.com
4.3 Standard IO wiring
Switch points (standard IO mode) can also be used in combination with the standard inputs of a PLC.
OUT1 and OUT2 can be switched to digital inputs (e.g. standard input modules). OUT1 and OUT2 can
be evaluated via two digital inputs and implement a window function.
Voltage supply (pin 1 and 3) can be done via the input modules. With standard input modules, pins 1
and 3 are used for voltage supply (Ò Electrical connection).
3
Fieldbus
OUT1 / OUT2
5
1
2
4
6
Fig.3: Application example with a fieldbus system (e.g. AS-i)
1: Conveyor belt and pulse pick-up 2: DP2122
3: Digital outputs 4: Digital fieldbus module
5: Fieldbus (e.g. Profibus, Profinet etc.) 6: PLC

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4.4 Function diagrams
4.4.1 Single point mode
SP1
SP1+H
SP1
H
OFF ON
SSC
Fig.4: NO (IO-Link parameter LoGc: no / high active)
SP1: Overspeed: Reset point / underspeed: Switch point
SP1+H: Overspeed: Switch point / underspeed: Reset point
If a set rotational speed is not reached, this is signalled by the switching signal as open.
SP1
SP1+H
SP1
H
ON OFF
SSC
Fig.5: NC (IO-Link parameter LoGc: nc / low active)
SP1: Overspeed: Reset point / underspeed: Switch point
SP1+H: Overspeed: Switch point / underspeed: Reset point
If a set rotational speed is not reached, this is signalled by the switching signal as closed.
1: Power-on delay time 2: Start-up delay
3: normally open 4: normally closed
4.4.2 Window mode
SP2
SP2
SP2-H
H
OFF
SSC
SP1
SP1+H
SP1
H
ON OFF
Fig.6: NO (IO-Link parameter LoGc: no / high active)
SP1: switch-on point window
SP1+H: Switch-off point
SP2: switch-on point window
SP2-H: Switch-off point
If the set speed range is left, the swicthing signal will signal this as open.
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SP2
SP2
SP2-H
H
ON
SSC
SP1
SP1+H
SP1
H
OFF ON
Fig.7: NC (IO-Link parameter LoGc: nc / low active)
SP1: switch-off point window
SP1+H: Switch-on point
SP2: switch-off point window
SP2-H: Switch-on point
If the set speed range is left, the swicthing signal will signal this as closed.
1: Power-on delay time 2: Start-up delay
3: Normally open 4: Normally closed
4.4.3 Two point mode
SP2
SP1
SP2
H
OFF ON
SSC
SP1
Fig.8: NO (IO-Link parameter LoGc: no / high active)
SP1: Overspeed: Switch point / underspeed: Reset point
SP2: Overspeed: Reset point / underspeed: Switch point
If a set rotational speed is not reached, this is signalled by the switching signal as open.
SP2
SP1
SP2
H
ON
SSC
SP1
OFF
Fig.9: NC (IO-Link parameter LoGc: nc / low active)
SP1: Overspeed: Switch point / underspeed: Reset point
SP2: Overspeed: Reset point / underspeed: Switch point

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If a set rotational speed is not reached, this is signalled by the switching signal as closed.
4.4.4 Deactivated mode
NO (IO-Link parameter LoGc: no / high active)
The switching signal is always signalled as open.
NC (IO-Link parameter LoGc: nc / low active)
The switching signal is always signalled as closed.
4.4.5 Standard IO mode
The yellow LEDs indicate the switching status of the unit.
Switching function NO:
transistor output LED yellow Description
Closed on Rotational speed > SP1 and during start-
up delay
Open off Rotational speed < SP2
Switching function NC:
transistor output LED yellow Description
Closed on Rotational speed < SP2
Open off Rotational speed > SP1 and during start-
up delay
4.4.6 Switching delays
The switching delay enables filtering of input signals. The switching delay is activated or restarted by a
positive switching edge of the input signal. Only if the input signal is still active after the delay time has
elapsed, the output will be set to the active switching state. Pulses that are shorter than the switching
delay will be filtered.
Input signal
Switching delays
Output signal
NO contact / High active / no
Output signal
NC contact / Low active / nc
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4.4.7 Switch-off delay
The switch-off delay enables filtering of input signals. The switching delay is activated or restarted by a
negative switching edge of the input signal. Only if the input signal is still inactive after the delay time
has elapsed, the output wil be set to the inactive switching state. Pulse pauses that are shorter than
the switch-back delay will be filtered.
Input signal
Output signal
NO contact / High active / no
Switch-off delay
Output signal
NC contact / Low active / nc
4.5 Start-up delay
The start-up delay enables the suppression of error signals when a plant is started. It is effective after
the power supply is applied and is dependent on a low speed.
If the drive is frequently switched on and off, it is advisable to couple the voltage supplies of the drive
and the speed monitor. By doing so, the start-up delay is active every time the motor is turned on.
If a coupled connection of the voltage supplies is not possible, a start trigger point can be set in the
process date or in SIO the via ENABLE (Pin 2) via IO-Link. The positive switching edge of the
corresponding signal serves as the start trigger point. In addition, the system can start up by itself;
after detection of the first pulses the delay timer is started (value: 0...999.9 s in steps of 0.1 seconds).

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5 Installation
uInstall the unit so that the M12 connection parts and the unit are protected from mechanical stress
such as shock and vibration.
uIf necessary, fix the unit with a clamp (use M4 screw or cable tie).
Fig.10: Mounting clip Fig.11: Mounting clip with attached unit
The mounting clip is not supplied with the unit. More information about available accessories at
www.ifm.com.
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6 Electrical connection
The device must be connected by a qualified electrician.
Observe the national and international regulations for the installation of electrical equipment.
Voltage supply according to EN50178, SELV, PELV.
CAUTION
Input current is not limited.
wNo fire protection.
uProtect circuits.
Touchable surfaces of the unit are insulated to the circuits with basic insulation according to IEC
61010-1.
uProtect circuits.
Potential M12 connector ①Fuse
L+ / supply voltage Pin 1 ≤ 2 A
Required tripping characteristic of the fuses:
Tfuse ≤ 120 s at max. 6.25 A (fire protection)
Alternatively supply the unit via a limited energy circuit according to IEC61010-1 or class 2 according
to UL1310.
Output reaction to overload or short circuit:
For self-protection of the output in case of excessive thermal load (due to short circuit or
overload), the output driver starts clocking. If a short circuit / overload continues for several
hours, the driver may be damaged!
uDisconnect power.
uConnect the unit as follows:
2
1
43
2 1
3
1 2
4
5
Fig.12: Electrical connection
1: 4-pole M12 connector
(Output side)
• Pin 1: L+ / supply voltage
• Pin 2: OUT2 / digital output 2
• Pin 3: L- / supply voltage
• Pin 4: OUT1 / IO-Link (C/Q)
2: 5-pole M12 female connector
(Input side)
• Pin 1: L+
• Pin 2: ENABLE for start-up bridging in SIO mode
• Pin 3: L-
• Pin 4: IN1 / digital input 1
• Pin 5: not used
The unit must not be externally supplied via the 5-pole M12 input socket ② .
Always use the provided connection cables to connect other devices.
See also application examples (Ò Intended use)

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6.1 Mounting the connector
To achieve the protection rating indicated in the data sheet, the following has to be observed:
uUse IO-Link cable with IP class.
uUse M12 connectors with gold-plated contacts.
uConnect the connector with the unit. The arrow indicates the position of the coding.
uCarry out the fitting according to the indications of the cable manufacturer.
• Maximum tightening torque on the connector side ➀: 1.8 Nm
• Maximum tightening torque o the socket side ➁: 1.3 ±0.1 Nm
6.2 Removing the connector
uPress the connector against the unit and simultaneously loosen the coupling nut.
6.3 Cable length
• Without IO-Link communication: 30 m on each side
• With IO-Link communication: 20 m on the master side
uProvide all input and output side cables with a strain relief approx. 200 mm behind the connectors.
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7 Operating and display elements
2
3
1
1: Push rings (pushbuttons)
2: LEDs
3: Display
Here, the Enter button [●] is shown pressed, as an example.
7.1 Push rings (pushbuttons)
To execute an [esc], [●], [▼] or [▲] command, press the corresponding corner of a push ring.
Button Function
[esc] Escape Return to the previous menu. Exit parameter setting without saving the new value.
[●] Enter Open menu mode.
Selection of the parameter and acknowledgement of a parameter value.
[▼] Down Selection of a parameter. Setting a parameter value (scrolling by holding down, incremen-
tally by pressing repeatedly).
[▲] Up
To ensure correct operation of the push rings (buttons), do not install or place the unit directly
on a metal surface.
For the installation use the mounting clip Ò Installation.
7.2 LEDs
LED Colour Status Designation
I OUT1 yellow on Output 1 switched.
Power green on Voltage supply OK.
Unit in operating mode.
off Unit in programming mode.
II OUT2 yellow on Output 2 switched.
Error signals and diagnosis: Troubleshooting

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7.3 Display
Colour Designation
Red/green 7-segment LED display, 4 digits, with colour change
Error signals and diagnosis: Troubleshooting
When [▼] or [▲] is pressed during the operating mode for 1 second, the unit of measurement will be
displayed. The displayed unit of measurement depends on the parameter C.uni.
In the operating mode the input frequency is displayed. The display value is scaled automatically in
the basic setting.
Operating mode 1:
Manual scaling via parameter [C.FEP] is activated by parameter [ScAL].
Manual scaling:
Display constraint to a step increment of 1 Hz.
Operating mode 2:
Process or parameter values with more than 4 digits cannot be fully displayed. In the local menu
the setting accuracy is limited to the 4 visible digits.
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8 Menu
If a scaling is set, the menu settings of all frequency and speed dependent parameters (SP,
cFH, etc.) are also scaled.
8.1 General
Irrespective of the operating mode (standard IO mode or IO-Link device) there are two options to set
the parameters of the unit:
• directly on the unit via the menu Parameter setting (Ò/27)
• or via an IO-Link tool
Access via an IO-Link tool has a higher priority than parameter setting via the menu.
Parameter cloning and parameter setting backup is possible with an IO-Link tool.
Some parameters can only be set via the IO-Link interface:
Parameters adjustable via IO-Link (Ò/25).
If the unit was locked via IO-link, it can also only be unlocked via the IO-Link interface:
Locking / unlocking (Ò/28).

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8.2 Menu structure
8.2.1 Operating mode 1
SSC1
1234
Hz
ModE 1-P und 2-P OFF
LoGc no nc
PnP nPn
SP1 0.2...2000
SP2 0.1...1999
HYS 0.5...100
dS 0...99.99
dr 0...99.99
12
SSC2 ModE 1-P und 2-P OFF
LoGc no nc
SP1 0.2...2000
SP2 0.1...1999
HYS 0.5...100
dS 0...99.99
dr 0...99.99
rES ---
dSt 0...999.9
ScAL OFF cccc ccc.c cc.cc c.ccc
C.FEP 500...4000
C.uni *...****
coLr rEd GrEn r1ou G1ou r-cF G-cF
cFH 0.2...2000
cFL 0.1...1999
diS.b On OFF
diS.U d1 d2 d3
CMPT HZ_M rpn_M
Lo ---
Hi ---
Lo ---
Hi ---
3
EF
P-n
1: Operating mode Ò Operating modes
2: Main menu Ò Parameters of the main menu
3: Eextended functions Ò Parameters of the extended functions (EF)
Ò Parameter list and factory settings
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8.2.2 Operating mode 2
SSC1
1234
krPM
12
SSC2
3
EF
ModE 1-P und 2-P OFF
LoGc no nc
PnP nPn
SP1 0.002...120.0
SP2 0.001...119.9
HYS 0.5...100
dS 0...99.99
dr 0...99.99
P-n
ModE 1-P und 2-P OFF
LoGc no nc
SP1 0.002...120.0
SP2 0.001...119.9
HYS 0.5...100
dS 0...99.99
dr 0...99.99
rES ---
dSt 0...999.9
1...99PrSC
Lo ---
Hi ---
Lo ---
Hi ---
coLr rEd GrEn r1ou G1ou r-cF G-cF
cFH 0.002...120.0
cFL 0.001...119.9
diS.b On OFF
diS.U d1 d2 d3
CMPT HZ_M rpn_M
1: Operating mode Ò Operating modes
2: Main menu Ò Parameters of the main menu
3: Eextended functions Ò Parameters of the extended functions (EF)
Ò Parameter list and factory settings
8.3 Parameters of the main menu
8.3.1 SSC1 ─ speed monitor OUT1
The parameter opens the menu of the settings for OUT1 of the speed monitor.