Safety Isolation System
ElectroGuard
Overview
Status Com m unication Capability to a Rem ote PLC
•
Optional Remote I/O via Flex modules. Communication can be
via the DeviceNet communication platform or the Remote I/O
communication platform.
Available from 23-1200 Am peres.
Specifications
UL Listed Industrial Control Panel;
Approvals
C
US
TUV Rheinland certified; CE marked
for all applicable directives
IEC/EN 60204-1; IEC/EN 60439-1;
Category 4 to International Standard
EN 954-1/ISO 13849-1; 98/37/EC
Machinery Directive; 89/336/EC EMC
Directive; 73/23/EC Low Voltage
Directive; Fulfils the function of an
energy isolating device in accordance
with the conditions set forth in the
FedOSHA letter of interpretation
pertaining to Section 1910.147(b);
Cal/OSHA 3314.
Standards
The ElectroGuard Safety Isolation System is used in place of a
disconnect switch for Lockout and Tagout (LOTO). It uses power
contactors and Remote Lockout Stations to accomplish LOTO.
Isolating the electrical energy usually involves calling an electrician to
turn “Off” the main disconnecting means. The electrician would
then perform LOTO of the disconnecting means operating handle.
Estimated Component Life
Remote Lockout Station 250,000 operations
Power Contactors 23A - 85A: 2,000,000 operations
(Isolation & Grounding) 110A-1200A: 1,000,000 operations
This same procedure is required to perform cleaning, maintenance,
setup, lubrication or adjustment. Machines or processes with
multiple access points may require operator/maintenance
intervention several times a shift (perhaps as often as 60 times per
shift).
Environmental
Storage Temperature -10°C...+60°C (14°F...140°F)
Operating Temperature 0°C...+40°C (32°F...104°F) (Ambient)
Relative Humidity,
90% Relative Humidity
Non condensing
To perform these activities, the operator/maintenance person may
be required to place part of his or her body into an area not accessed
during normal operation. This may cause serious or fatal injury if
LOTO procedures are not followed.
Power Panel Construction
Tamper-resistant Control Module
23A-85A systems support up to 4
Remote Lockout Stations without an
Expansion Module
The ElectroGuard Safety Isolation System allows the machine
operator to safely and quickly accomplish LOTO with dramatically
reduced downtime.
110A-1200A systems support up to 6
Remote Lockout Stations without an
Expansion Module
Provides Energy Isolation
Control Module with viewing window
for visual check of status indicator lights
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•
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Power isolation accomplished by means of contactors rather than
disconnect switches.
Top and bottom 25.4mm (1.0in)
conduit entry (removable plug in
bottom conduit hole)
Remote Lockout Station
Construction
Uses redundant, independent and self-monitoring circuits to
detect a system fault.
Sealing provision for tamper-resistance
Prevents accumulation of faults in order to maintain the integrity
of the safety system.
Tamper-resistant design.
Operating handle accepts up to 3
padlocks
4 port—supports up to 4 lockout
stations
• allows the systems to
accommodate up to 24 Remote
Lockout Stations
10 port—supports up to 10 lockout
stations
• allows the systems to
accommodate up to 60 Remote
Lockout Stations
Window for viewing status indicator
lights; Sealed for tamper-resistance
Expansion Module
Construction
Convenient Rem ote Lockout Station
•
•
•
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Allows remote isolation of the electrical power to the machine or
process—machine operator simply turns “Off” a Remote
Lockout Station.
A light on the Remote Lockout Station indicates that the three-
phase power source to the machine or process has been isolated.
No Light Mea ns No Entr y.
If a fault occurs in the Safety Isolation System, the “System
Isolated” light on the Remote Lockout Stations will not
illuminate.
Easy Lockout/Tagout.
Safety Isolation Sys. Inputs
Standard Inputs from Remote Lockout Stations
Certified by TUV to m eet requirem ents of Category 4
Optional Inputs from
Rockwell Automation
Safety Products
•
•
Certified by TUV to meet Category 4, the most stringent safety
category defined within International Standard EN 954-1/ISO
13849-1.
Subjected by TUV to rigorous third party testing and verification
of the Failure Mode & Effect Analysis (FMEA).
Safety Mats, ➊
Light Curtains, ➊
E-Stop Stations, ➊
Proximity Switches, ➊
Photo Switches ➊
System Operational Limits
+10%, -15% of the line voltage
➊ Use of any of these input devices will not meet Lockout/Tagout (LOTO)
requirements.
12-2
ALLEN-BRADLEY [ Allen-Bradley ]
