IFM DD111S User manual

80005256 / 00 11 / 2019
Original Installation Instructions
Safety speed monitor
DD110S
DD111S
UK

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Contents
1 Preliminary note���������������������������������������������������������������������������������������������������4
1�1 Symbols used ������������������������������������������������������������������������������������������������4
1�2 Warnings used�����������������������������������������������������������������������������������������������5
2 Safety instructions �����������������������������������������������������������������������������������������������5
2�1 General requirements on the safety-related functions�����������������������������������6
3 Functions and features ����������������������������������������������������������������������������������������7
3�1 General function description��������������������������������������������������������������������������7
3�2 Safe state of the output relays�����������������������������������������������������������������������8
3�3 Switching function "Overspeed"���������������������������������������������������������������������8
3�4 Hysteresis������������������������������������������������������������������������������������������������������8
3�5 Initialisation����������������������������������������������������������������������������������������������������9
3�6 Fault output (Y7)��������������������������������������������������������������������������������������������9
3�7 Overspeed output (Y8) ����������������������������������������������������������������������������������9
3�8 Feedback circuit for external device monitoring (Y1-Y2)�������������������������������9
4 Installation����������������������������������������������������������������������������������������������������������10
4�1 Mechanical installation of the device �����������������������������������������������������������10
4�2 Remove the device��������������������������������������������������������������������������������������10
5 Electrical connection������������������������������������������������������������������������������������������ 11
5�1 Terminals ����������������������������������������������������������������������������������������������������� 11
5�2 Automatic/manual mode selection���������������������������������������������������������������13
5�2�1 Automatic mode����������������������������������������������������������������������������������13
5�2�2 Manual mode��������������������������������������������������������������������������������������14
5�3 Enable input�������������������������������������������������������������������������������������������������16
6 Indicators and operating elements���������������������������������������������������������������������17
6�1 LEDs������������������������������������������������������������������������������������������������������������17
6�2 Switches ������������������������������������������������������������������������������������������������������18
7 Set-up ����������������������������������������������������������������������������������������������������������������19
7�1 Configuration position (factory setting) ��������������������������������������������������������19
7�2 Setting the switch point��������������������������������������������������������������������������������20
7�3 Examples of switch point settings����������������������������������������������������������������21
7�4 Checklist after installation and set-up����������������������������������������������������������21
8 Technical data����������������������������������������������������������������������������������������������������22
8�1 DD110S �������������������������������������������������������������������������������������������������������22
8�2 DD111S��������������������������������������������������������������������������������������������������������24

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9 Maintenance, repair and disposal����������������������������������������������������������������������26
10 Approvals/standards ����������������������������������������������������������������������������������������26
11 Terms and abbreviations����������������������������������������������������������������������������������27
This document is the original instructions�

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1 Preliminary note
The instructions are part of the unit� They are intended for authorised persons
according to the EMC and Machinery Directive and safety regulations� The
instructions contain information about the correct handling of the product� Read
the instructions before use to familiarise yourself with operating conditions,
installation and operation�Adhere to the safety instructions�
Instructions, technical data, approvals, accessories and further information at
www�ifm�com�
1.1 Symbols used
►Instruction
> Reaction, result
[…] Designation of keys, buttons or indications
→Cross-reference
Important note
Non-compliance may result in malfunction or interference�
Information
Supplementary note�
LED on
LED off
LED flashes

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1.2 Warnings used
WARNING!
Warning of serious personal injury�
Death or serious irreversible injuries may result�
CAUTION!
Warning of personal injury�
Slight reversible injuries may result�
ATTENTION!
Warning of damage to property�
2 Safety instructions
• Follow the operating instructions�
• Improper use may result in malfunctions of the unit� This can lead to personal
injury and/or damage to property during operation of the machine� For this
reason note all remarks on installation and handling given in this document�
Also adhere to the safety instructions for the operation of the whole installation�
• In case of non-observance of notes or standards, especially when tampering
with and/or modifying the unit, any liability and warranty is excluded�
• The unit must be installed, connected and put into operation by a qualified
electrician trained in safety technology�
• The applicable technical standards for the corresponding application must be
complied with�
• For installation the requirements according to EN 60204 must be observed�
• Connect and lay all cables according to EN ISO 13849-2 D�5�2 (Safety of
machinery - Safety-related parts of control systems)�
• In case of malfunction of the unit please contact the manufacturer� Tampering
with the unit is not allowed�
• Disconnect the unit externally before handling it� Also disconnect any
independently supplied relay load circuits�
• After setup the system has to be subjected to a complete function check�

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• Use the unit only in specified environmental conditions (→ 8 Technical data)�
In case of special operating conditions please contact the manufacturer�
• Use only as described below (→ 3 Functions and features)�
2.1 General requirements on the safety-related functions
The device complies with the functional and organisational requirements of
EN ISO 13849-1 Performance Level "e" and EN 62061 SIL "3"�
To maintain Safety Integrity Level (SIL) "3" requirements the two input
sensors should not be of the exact same type and independent of each
other�
Common cause failures between input sensors must be excluded by
observing an appropriate cable installation (i�e� separate cable paths)�
Input sensors must be mounted separately from each other�
To maintain the category 4 requirements during longer periods of standstill
the machine operator has to ensure that the machine to be monitored is
operated once a day (t < 24 h)�

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3 Functions and features
3.1 General function description
The device is a two-channel pulse evaluation system for safe overspeed detection�
To do so, it receives the pulse sequences from the pulse pick-ups connected to
the inputs� The device calculates the resulting frequency�
By continuously comparing the input frequency (actual value) and the switch point
(target value) the device promptly detects overspeed of the set switch point�
The NO contacts of the internal relays are connected in series so that the current
paths are not closed before both relays have switched�
Block diagram
The target value is set via 3 switches on the front of the device� The value can be
set in "rpm"/"Hz" (DD110S) or "Hz" (DD111S)�

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3.2 Safe state of the output relays
Output relays are de-energised� Current paths are open�
3.3 Switching function "Overspeed"
The output relays de-energise when the event occurs (selected frequency Fo
reached)� The relays switch on again when the value falls below the preset value
reduced by hysteresis (Foh)�
Characteristics of the safety outputs (current paths)
The NO contacts of the internal relays are connected in series and connected to
the terminals� If both relays are energised, the current paths are closed so that, for
example, a power contactor can be controlled�
If the switch point is exceeded, the current paths open�
3.4 Hysteresis
The hysteresis determines the difference between the switch point (current paths
open) and the switch-on point (current paths close)�
The hysteresis value is fixed at 5 %�
If the input frequency falls below the set switch point by 5 %, the relays energise
again and the current paths are closed�
Example switch point Fo = 10 (Hz):
• The current paths open when Fo has been exceeded (rising frequency)�

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• Current paths close when the measured value is lower than Foh (in this case
9�5 Hz, falling frequency)�
3.5 Initialisation
Directly after power on, the device carries out an initialisation comprising a
complete self-test� After approx� 3 s the device is ready for operation�
3.6 Fault output (Y7)
The transistor output "Fault" (Y7) opens when an internal or external error occurs�
The error message is reset by interrupting the voltage supply�
3.7 Overspeed output (Y8)
The overspeed output (Y8) is "HIGH" when the current paths are closed and
"LOW" when the current paths are opened�
3.8 Feedback circuit for external device monitoring (Y1-Y2)
If overspeed is detected, the current paths open and the external relays are de-
energised�
If the feedback circuit does not close within 1 s, an error message is provided�
LED [FAULT] flashes 3 times�
Also see (→ 6.1 LEDs)�
If the feedback function is not required, the terminals Y1-Y2 must be
permanently bridged�
Feedback contacts (NC contacts of the
external relays in series)
Without feedback function with bridge

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4 Installation
4.1 Mechanical installation of the device
►Mount the device on a 35 mm DIN rail in a housing protected against dust and
humidity (min� IP 54)�
Leave enough space between the device and the top and bottom of the
housing to enable air circulation and to avoid excessive heating�
Take into account the internal heating of all devices when mounting several
devices side by side� The environmental conditions must be observed for
every device and, in order to avoid overheating, maintain between them a
minimum distance of 20 mm�
4.2 Remove the device

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5 Electrical connection
5.1 Terminals
Terminals
Plug Terminal Connection
A1 L+ Supply voltage (+ 24 V DC)
protected by a resettable fuse
short-circuit proof, not monitored
S33 Sensor 1 supply (+ 24 V DC)
S35 Sensor 1 GND (0 V DC)
S34 Sensor 1 input

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Plug Terminal Connection
A2 L- Supply voltage (GND)
directly connected to the device ground
S44 Sensor 2 supply (+ 24 V DC)
S45 Sensor 2 GND (0 V DC)
S43 Sensor 2 input
A3 13 Current path 1A (relay contacts)
(not connected)
(not connected)
14 Current path 1B (relay contacts)
C1 Y3 Deactivation of the monitoring function (P) (→ 5.3)
Y4 Deactivation of the monitoring function (N) (→ 5.3)
Y5 Automatic mode selection
Y6 Manual mode selection
C2 Y7 Transistor output "Fault" (→ 3.6)
Y8 Transistor output "Overspeed" (→ 3.7)
Y1 Feedback circuit output
Y2 Feedback circuit input
C3 23 Current path 2A (relay contacts)
(not connected)
(not connected)
24 Current path 2B (relay contacts)
Observe the technical data of the electrical connections�
(→ 8 Technical data)
PELV power supplies are to be used according to EN 60204-1�
The electrical input signals meet the requirements to EN 61131, type 2�
Do not use unconnected terminals as support point terminal�
Terminal tightening torque: 0�6���0�7 Nm (5���7 lb-in)�

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5.2 Automatic/manual mode selection
If overspeed is detected, the current paths open and the drive is switched off�
As a result the input frequency falls below the switch point and the current paths
close (below Foh)�
By means of the automatic/manual function it can be prevented that the current
paths close automatically when the input frequency drops below the Foh value�
The selection of the operating mode is made via two input terminals Y5 and Y6�
5.2.1 Automatic mode
Automatic mode
In this operating mode the device compares the input frequency with the set target
value�
• If the input frequency is below the target value, the relay outputs are switched�
• If the input frequency exceeds the target value, the relay outputs are not
switched�
The automatic operation mode is implemented by connecting input Y5 to Y1
(pulsed test signal) and input Y6 to + 24 V DC�
The device goes into the failsafe state as soon as an error has been detected
(short circuit at 0 V DC or + 24 V DC or separated connections)�

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5.2.2 Manual mode
Manual mode
In this operating mode, the outputs of the device are only activated if the input
frequency is below the target value and after the restart signal has been sent to
the device via an external restart command (terminal Y5)�
Once the overspeed has been detected, the relay outputs are not switched�
The sequence described above must be repeated in order to re-activate them�
Manual operation is implemented when during initialisation input Y6 is on the
pulsed test signal of Y1 and input Y5 is open�
In this case the current path remains open until there is a restart signal on input
Y5� The restart signal on input Y5 responds after the falling edge (a complete
transition 0 V DC → + 24 V DC → 0 V DC ) of this input. This signal is only active
if the frequency is below the Foh value�
The restart command element must be installed outside the hazardous
area in a position where the hazardous area and the entire work area
concerned are clearly visible�
The device may also be installed within the hazardous area� It is not
required to operate it from outside the hazardous area�

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The restart signal must be applied for 0�3���5 s� Otherwise the command is
rejected�
If the restart command is activated (rising edge or falling edge or both)
when the frequency is between Fo and Foh, the command is also rejected�
When the device is waiting for the restart command, the yellow LED [ENA]
flashes�
The figure below shows the restart options in the manual mode�
Manual mode / restart diagram

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5.3 Enable input
If several devices with different switch points are used for overspeed monitoring of
a drive, the devices whose switch point value is not relevant can be "switched off"
by means of the two enable inputs� The current paths are then closed�
In this way the relay status can be controlled via the enable input after power-on
of the device�
The monitoring function is activated or deactivated by means of a complementary
signal to both enable inputs�
Time-dependent behaviour of the enable inputs
1: Monitoring function active/not active
2: Enable inputs not in the right time
The monitoring function is only deactivated if both input signals E1 and E2
are provided almost simultaneously� The maximum time interval of both
input signals must not exceed 0�5 s�
The signal can be applied via mechanical switches�

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6 Indicators and operating elements
S2
IN1 IN2
K1 K2
rpm
1
50
100
10
PP Hz
5
96
10
500
0,5 1
S3
FAULTENA
ON CONF
96
3
3
P/0
P/0
S1
S2
IN1 IN2
K1 K2
S3
FAULTENA
ON CONF
96
3
96
3
P/0
96
3
P/0
P/0
S1
DD110S DD111S
1: LEDs
2: Switches (270° potentiometer, 10 positions, locking)
6.1 LEDs
LED Colour Description
ON Green Power
ON when device is switched on�
CONF Blue Configuration
ON when device in configuration mode�
Flashing when switches are in P position�
ENA Yellow Enable
ON when the enable inputs are logically on�
Flashing in configuration mode when the position of a switch is
changed (one flash for each step)�
Flashing when the device is waiting for a restart command (→ 5.2.2)�

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LED Colour Description
FAULT Red Error
ON when an internal fault was detected�
Flashing when an external fault was detected�
1 x Manual/automatic configuration error
2 x Switches in incorrect position (frequency selectors)
3 x Feedback circuit error
4 x Sensor error (function or wiring)
5 x Current > 500 mA on output S33, S44, Y1, Y7 or Y8
Flashing alternately with ENA, CONF, IN1/2 and K1/2 when a sensor
is not connected�
IN1 IN2
K1 K2
FAULTENA
ON CONF
IN1 IN2
K1 K2
FAULTENA
ON CONF
IN1 IN2
K1 K2
FAULTENA
ON CONF
IN1 IN2
K1 K2
FAULTENA
ON CONF
IN1/2 Yellow Input IN1/2
ON when a HIGH signal was detected on the input IN1 or IN2�
K1/2 Green Relay K1/2
ON when the safety output relay K1 or K2 is switched on�
6.2 Switches
Switches Description
S1 SP x 10 Switch point selection (increments of 10)
S2 SP x 1 Switch point selection (increments of 1)
S3 DD110S SP multi Unit (rpm/Hz) and multiplier of the selected switch point
DD111S SP x 0�1 Switch point selection (increments of 0�1)
To select the switch point, the 3 switches must be in the "P" (DD110S) or
"P/0" (DD111S) position before the device is switched on�

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7 Set-up
When the device is switched on for the first time, it is necessary to configure the
overspeed frequency (Fo) using the three switches�
The 3 switches allow the user to enter the value of the desired preset frequency�
• With S1 and S2 switches numerical values from 1 to 99 can be set (S1 with
increments of 10, S2 with increments of 1)�
• DD110S: The multiplier is set using switch S3� The numerical values are
multiplied with these factors and thus provide the actual switch point value�
The multipliers have the unit "rpm" or Hz"�
DD111S: The decimal values can be set with switch S3�
7.1 Configuration position (factory setting)
The switch point value can only be set when the operating voltage is
connected to the device and the 3 switches are set as indicated (factory
setting)�
S2
rpm
1
50
100
10
PP Hz
5
96
10
500
0,5 1
S3
96
3
3
P/0
P/0
S1
S2
S3
96
3
96
3
P/0
96
3
P/0
P/0
S1
DD110S DD111S
S1 in position P/0
S2 in position P/0
S3 in position P (DD110S) or P/0 (DD111S)
ATTENTION!
To prevent damage to the switches use a screwdriver of the
appropriate size�

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7.2 Setting the switch point
Step 1:
►Switch off power supply of the device�
►Set the 3 switches to configuration position P or P/0 (→ 7.1)
►Switch on power supply of the device�
> Device is in the configuration mode�
> LED [CONF] flashes�
Step 2:
►Set switch S1 from the position P/0 to the required value�
> During the rotation, the LED [ENA] flashes with every step�
The flashing of the LED is a visual feedback of each step executed�
> Device remains in the configuration mode and waits for S2 to be set�
> LED [CONF] is still flashing�
Step 3:
►Set switch S2 from the position P/0 to the required value�
> During the rotation, the LED [ENA] flashes with every step�
The flashing of the LED is a visual feedback of each step executed�
> Device remains in the configuration mode and waits for S3 to be set�
> LED [CONF] is still flashing�
Step 4:
►Set switch S3 from the position P (DD110S) or P/0 (DD111S) to the required
value�
> During the rotation, the LED [ENA] flashes with every step�
The flashing of the LED is a visual feedback of each step executed�
> LED [CONF] remains permanently on�
Step 5:
►Wait until LED [CONF] flashes twice (settings are saved)�
►Switch off power supply of the device�
> Configuration is completed�
To ensure that a value can be set all 3 switches have to be moved at least
once� This also applies if the required value is "0" (corresponds to the "P"
position)�
This manual suits for next models
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