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Hardware and Engineering
SLS – Safety Lockout System
11/01 AWB8710-1372GB
1st published 2001, edition 11/01
© Moeller GmbH, Bonn
Author: Josef Hilger
Translator: David Long
All brand and product names are trademarks or registered
trademarks of the owner concerned.
All rights reserved, including those of the translation.
No part of this manual may be reproduced in any form
(printed, photocopy, microfilm or any otherprocess) or processed,
duplicated or distributed by means of electronic systems without
written permission of Moeller GmbH, Bonn.
Subject to alterations without notice.
Warning!
Dangerous electrical voltage!
Before commencing the installation
• Disconnect the power supply of the device.
• Devices that are designed for mounting in housings or control
cabinets must only be operated and controlled after they have
been installed and with the housing closed. Desktop or
portable units must only be operated and controlled in
enclosed housings.
• Ensure that devices cannot be accidentally restarted.
• Verify isolation from the supply.
• Earth and short circuit the device.
• Cover or enclose any adjacent live components.
• Measures should be taken to ensure the proper restart of
programs interrupted after a voltage dip or failure. This should
not cause dangerous operating states even for a short time.
If necessary, emergency-stop devices should be implemented.
• Follow the engineering instructions (AWA) for the
device concerned.
• Only suitably qualified personnel in accordance with
EN 50110-1/-2 (VDE 0 105 Part 100) may work on this
device/system.
• Wherever faults in the automation system may cause injury or
material damage, external measures must be implemented to
ensure a safe operating state in the event of a fault or
malfunction (for example, by means of separate limit switches,
mechanical interlocks etc.).
• Before installation and before touching the device ensure
that you are free of electrostatic charge.
• The functional earth (FE) must be connected to the protective
earth (PE) or the potential equalisation. The system installer is
responsible for implementing this connection.
• Depending on their degree of protection, frequency inverters
may contain live bright metal parts, moving or rotating
components or hot surfaces during and immediately after
operation.
• Connecting cables and signal lines should be installed so
that inductive or capacitive interference does not impair the
automation functions.
• Removal of the required covers, improper installation or
incorrect operation of motor or frequency inverter may cause
the failure of the device and may lead to serious injury or
damage.
• Install automation devices and related operating elements in
such a way that they are well protected against unintentional
operation.
• The applicable national accident prevention and safety
regulations apply to all work carried on live frequency
inverters.
• Suitable safety hardware and software measures should be
implemented for the I/O interface so that an open circuit on the
signal side does not result in undefined states in the
automation devices.
• The electrical installation must be carried out in accordance
with the relevant regulations (e. g. with regard to cable cross
sections, fuses, PE).
• Ensure a reliable electrical isolation of the extra-low voltage of
the 24 V supply. Only use power supply units complying with
IEC 60 364-4-41 (VDE 0 100 Part 410) or HD384.4.41 S2.
• Transport, installation, commissioning and maintenance work
must be carried out only by qualified personnel (IEC 60364,
HD384 and national occupational safety regulations).
• Deviations of the mains voltage from the rated value must
not exceed the tolerance limits given in the specifications,
otherwise this may cause malfunction and dangerous
operation.
• Installations containing frequency inverters must be provided
with additional monitoring and protective devices in
accordance with the applicable safety regulations.
Modifications to the frequency inverters using the operating
software are permitted.
• Emergency stop devices complying with IEC/EN 60204-1 must
be effective in all operating modes of the automation devices.
Unlatching the emergency-stop devices must not cause a
restart.
I
• All covers and doors must be kept closed during operation.
• To reduce the hazards for people or equipment, the user must
include in the machine design measures that restrict the
consequences of a malfunction or failure of the drive
(increased motor speed or sudden standstill of motor).
These measures include:
– Other independent devices for monitoring safety-related
variables (speed, travel, end positions etc.).
– Electrical or non-electrical system-wide measures (electrical
or mechanical interlocks).
– Never touch live parts or cable connections of the frequency
inverter after it has been disconnected from the power
supply. Due to the charge in the capacitors, these parts may
still be live after disconnection. Fit appropriate warning
signs.
II
11/01 AWB8710-1372GB
Contents
About this manual
3
Abbreviations and symbols
3
1 SLS General Information
5
General safety instructions
7
Electrical protection of the SLS
7
Intended usage and limitations of the SLS
7
System overview
8
General module description
10
–Power box (PB)
10
– Control box (CB)
10
– Disconnect switches (DS, DS2, ES, GS)
11
Optional modules
11
– Marshalling box(es) (MB)
11
– Time delay module
11
2 Engineering Information
13
SLS system component requirement
13
Site of installation of the SLS
13
SLS control voltage
13
Cables and wiring for SLS interconnection
13
– Allowed maximum cable lengths
13
– Configuration requirements
13
3 System Components
15
Power Box
15
Control Box
17
Marshalling box
19
4 Commissioning Instructions
21
Start up of SLS
21
Normal operation
22
– How to stop and restart the SLS
22
– Manual restart of SLS and machinery
22
Function of internal components
22
– Control circuit protection devices
22
– Voltage monitor PU3Z (K1A) in power box
23
– Concentrator of inputs (Relays K1A to K4A)
in Control Box
24
– Isolation monitoring (Relay K11A) in the control box
25
– Confirmation relay (K12A) in control box
25
Status of internal relays and indication lamps under
normal working conditions
26
1
Contents
11/01 AWB8710-1372GB
5 Trouble Shooting
31
Protection devices
31
– CB “Q1“ in the Power Box
31
– MCB “F1“ in Power Box
32
– MCB “F2“ in Power Box
32
– MCB “F3“ or “F5“ in Control Box
32
– MCB “F2“, “F4“ or “F6“ in Control Box
32
Voltage monitor in power box
33
Concentrated Relay (K1A to K4A) in Control Box
38
Isolation monitoring relay K11A
44
Confirmation relay K12A of voltage monitor PU3Z
46
Indication lamps on the control box
49
–SLS ready
49
–Disconnect off
49
Disconnect switch
49
6 General Information for the Replacement of Sealed Units
51
Module types in CI-enclosure or sheet steel enclosures
51
Module types as fully withdrawable units of the
MODAN6000MCC
51
Appendix
53
Technical Data
53
– SLS, Cables/Interconnection
53
– SLS in Totally Insulated CI Enclosure
54
– SLS in Sheet Steel Enclosure
55
– SLS in Fully Withdrawable MODAN6000 Unit
56
– MDM Motor Control Centre and
Power Distribution Section
56
Dimensions
57
– Power Box, Power/Control Box
57
– Control Box, Marshalling Box
59
– Disconnect Switch, Emergency-Stop Button
60
Declaration of Conformity
61
Index
63
2
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