IFM DD111S Manuale utente

80005256 / 00 11 / 2019

Original Installation Instructions

Safety speed monitor

DD110S

DD111S

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

9 Maintenance, repair and disposal��26

10 Approvals/standards ��26

11 Terms and abbreviations��27

This document is the original instructions�

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

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�

• 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)�

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)�

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)�

• 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

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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