machine wiring help ..............

[sibbits]

im trying to add an emergency stop to this machine i am thinkin break between terminal 2 on the crabtree starter to drop the coil out ...

can someone confirm please?

 

[davesparks]

Looks like terminal 2 on the crabtree starter is for the start contact, so not much use for a stop button.

The stop circuit appears to be going to terminal 9 via the yellow wire, stop buttons woukd be wired in series like the optional microswitches shown.

 

[sibbits]

nice one thanks
these older drawings confuse me but now you mention its obvious

 

[sibbits]

on the table end stops

 

[netblindpaul]

Strictly speaking the control system can't be modified to add an emergency stop as is, because, the laws around machinery would require a full assessment of the machine and this function.
Emergency stops must meet a minimum of iSO 13489-1 performance level C unless the machine c-type standard requires a different level.
Just in the same way that you would expect a modification to a building wiring system covered by bs 7671 to be done to the current version, the laws around machinery actually require this.