Sliding bolt actuator for safer interlock switches
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Rockwell Automation - Allen-Bradley Guardmaster product story
Edited by the Engineeringtalk editorial team
Jun 7, 2000
The high level of safeguarding provided by Guardmaster's Trojan 6, Trojan GD2, MT-GD2 and TLS-GD2 safety interlock switches is being enhanced with the introduction of a new Sliding Bolt Actuator.
The high level of safeguarding provided by Guardmaster's Trojan 6, Trojan GD2, MT-GD2 and TLS-GD2 safety interlock switches is being enhanced with the introduction of a new Sliding Bolt Actuator.
The actuator can be positively "locked-off", with up to three padlocks, to allow safe access to machinery.
The Sliding Bolt Actuator protects operatives and maintenance staff from injury by ensuring that the actuator key of a safety interlock switch does not engage and allow potentially dangerous machinery to start-up.
The actuator is particularly useful in applications where, for example, a safety switch is used as the main interlock on the gate of an enclosure housing equipment which itself is unshielded.
Without the facility for locking-out the actuator, the gate could be closed in error, presenting a danger to those working within.
However, by padlocking the Sliding Bolt Actuator the interlock switch cannot be engaged and mechanical start-up is prevented, even if the gate is closed inadvertently.
The design of the Sliding Bolt Actuator ensures the maximum safeguarding by providing the facility for up to three padlocks.
This means that up to three operatives could be working in the same safety sensitive area at any one time.
Each of the operatives would have his own unique key to one of the padlocks on the actuator and each would signify completion of his work in the sensitive area by removing his padlock.
Only when all the padlocks were removed would the sliding bolt actuator be freed, enabling normal working to resume.
The Sliding Bolt Actuator has been conceived with robust applications in mind.
Its construction, a solid aluminium extrusion with durable satin anodised finish, reflects this.
The integrated design includes a removable handle that accommodates an anchor point for rope attachment.
It also offers the flexibility of 4 fixing positions to suit actuator entry for Trojan 6, MT-GD2, Trojan GD2 and TLS-GD2 safety interlock switches.
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