IDEC Enabling Switches Selection Guide
Selection Guide
Enabling “Dead Man” Switches
What is an enabling switch?
An enabling switch is a 3-position (OFF-ON-OFF) switch to allow a machine
operation only when the switch is lightly pressed and held in the middle position
OverviewXW Series E-StopsInterlock SwitchesEnabling SwitchesSafety Control RelaysLight CurtainsAS-Interface Safety at Work
(position 2). Because it disables machine operation when released (position 1) or
further depressed (position 3) by a panicked operator, the safety of operators is
ensured.
IDEC was a pioneer in developing these type of switches and championed the
additional IEC60947-5-8 requirements for enabling switches to be used in automated manufacturing cells.
IEC symbol designating a 3-position enabling
switch as specied in IEC60947-5-8
Enabling Switches
Because operators use pendants in dangerous environments performing teaching, system changeover, and maintenance of robots, they must have protection
against unpredictable motion of robots, and therefore teach pendants are
equipped with 3-position enabling switches.
HE1B Enabling Switch Movement
3 Position Enabling Switch
Position 1 - Normal position - Contact Open
Position 2 - Push half way - Contact Closed
Position 3 - Push all the way - Contact Open
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When releasing switch from position 3 back to position 1, the switch will not enter
the ON state.
1607302053
Enabling Switches
Selection Guide
Selection Guide
Enabling Switches
Series HE1B HE2B HE3B HE5B HE6B
Appearance
Page 394 396 399 402 405
Description Basic Switch Full Size Contacts 16mm Panel Mount 16mm Panel Mount Compact Size
Main Contacts 1NO DPDT/DPDT, 2NC/DPDT, 4NC DPDT DPDT DPDT
Monitor Contacts – 2NC, 4NC – – 2NC
Grip Switches
Series HE1G HE1G-L HE2G HE5B Housing
Overview XW Series E-Stops Interlock Switches Enabling Switches Safety Control Relays Light Curtains AS-Interface Safety at Work
Appearance
Page 408 412 415 419
Description Grip Switch Light Force Grip Switch
Maximum Contacts DPDT, 1NC/DPDT, 2NC DPDT DPDT
Options E Stop or Push Button E Stop or Push Button
Compact, Ergonomic
GripSwitch
E Stop, Push Button, Key
Switch, Pilot Light
Grip switch housing for HE5B
Application Example
Teaching Pendant Back of Teaching Pendant
–
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Enabling Switch
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