Single isolation/Single Access
Application
Simple machine or enclosure which has one isolator and one access point.
Operating Sequence
- Power ON, key A trapped in isolator, Guard locked closed
- Power OFF, KEY A free, Guard locked closed
- Power OFF/ Guard open, key A trapped in guard door
RECOMMENDED LOCK TYPE
ILE, ILD / ILH – 100
Single Isolation/Delayed Single Access
Application
Machine with a run-down time requirement or one which cannot be stopped half way through the cycle.
Operating Sequence
- Power ON, machine operating, Key A trapped at machine power supply, Guard locked closed
- Power OFF, machine stopping, key A trapped at machine supply, timer ON, Guard locked closed
- Power OFF, machine stopped, key A free / Guard locked closed
- Power OFF, machine stopped / Guard open, key A trapped in guard door.
RECOMMENDED LOCK TYPES :
ILT, ILD / ILH – 100
Single Isolation/Multiple Access
Application
Machine which has more than one access point, Eg: Electrostatic Precipitators
Operating Sequence
- Power ON, Key A trapped in Main source of supply, access Keys B, C & D trapped in Key Exchange/guards locked closed.
- Power OFF Key A free, access Keys B, C & D trapped in Key Exchange/guards locked closed.
- Power OFF/ Control Key A trapped in Key Exchange access Keys B, C & D released/Guards locked closed.
- Power OFF/ Control Key A trapped in Key Exchange Guards open, access Keys B, C & D trapped in guard doors.
RECOMMENDED LOCK TYPES :
ILE, ILD/ILH-100, ILS-100,ILG-100
Single Isolation/Interactive Access
Application
Machine where there is danger of personnel being trapped inside the machine.
Operating Sequence
- Power ON, Key A trapped in Main source of supply Guard locked closed, personnel key B trapped in guard door.
- Power OFF, key A free, Guard locked closed, personnel Key B trapped in guard door.
- Power OFF, key A trapped, guard released, personnel Key B trapped in guard door.
- Power OFF, Key A trapped, guard open, personnel key B free.
RECOMMENDED LOCK TYPES :
ILE, ILH – 200, ILG – 200
Multiple Sequential Isolation/Single Access
Application
Machine that requires a sequential action to ensure isolation – Power OFF Earth Switch ON, Guard open
Operating Sequence
- Power ON, Key A trapped in Switch gear, Earth Switch Open. Access key B trapped at earth switch/ Guard locked closed.
- Power OFF, key A released / Earth Switch OPEN. Access Keys B trapped / guard locked closed.
- Power OFF, key A trapped in Earth Switch, Earth Switch CLOSED, key B free/ guard locked closed.
- Power OFF, Key A trapped Earth Switch CLOSED/ Guard open, key B trapped in guard.
RECOMMENDED LOCK TYPES : ILA, ILA-200, ILD/ILH - 100
Multiple Isolation/Multiple Access
Application
Machine which has a number of power sources and many access points.
Operating Sequence
- Power ON, Keys A1, A2, A3 trapped at power supply, Access Keys B1, B2, C1, C2, D1, D2 trapped in key exchange/ Guards locked closed.
- Power OFF, key A1, A2, A3, free/ access keys B1, B2, C1, C2, D1, D2 trapped in key exchange/guards locked closed.
- Power OFF, keys A1, A2, A3 trapped in Key Exchange, access Keys B1, B2, C1, C2, D1, D2 free/guards locked closed.
- Power OFF, Keys A1, A2, A3 trapped in Key Exchange, guards open, Keys B1, B2, C1, C2, D1, D2 trapped in respective guard doors.
RECOMMENDED LOCK TYPES :
ILE, ILX – 100, ILD / ILH 100
Power Isolation/Delayed Access
Application
Multiple operation programmable Robot controlled machines with guards.
Operating Sequence
- Power ON, Key A trapped at power supply / Guard locked closed, Key B trapped in inter active control box – Machine/ Robot in normal operation mode.
- At end of cycle, Switch Power off, Key A free. Insert key A in interactive control Box & Trap Key A.
- Key A trapped n interactive control box. Key B released after end of cycle or preset time delay.
- Release Key-B Insert in guard lock & strap.
- Key B trapped in Guard Door lock. Guard open.
RECOMMENDED LOCK TYPES : ILT, ILD / ILH – 100
Locks for electrical Distribution system
Three sources of supply feeding 3 separate loads
Application
- Supplies are not to be paralleled at any time.
- Each source must be able to supply any two loads, if required.
Conditions
- Key AA will operate locks AA or A- only
- Key BB will operate locks BB or -B only
- Key AA will operate A-, -B, or AB
RECOMMENDED LOCK TYPES : ILA, ILB WITH SUITABLE ACCESSORIES