The following changes in requirements are being proposed:
1. Proposed New (Third) Edition for UL 1740 including the following changes: a) Requirements for operation upon failure to complete intended motion/Locked rotor abnormal test; b) Requirement for equipment to stop and alert teacher prior to a "singularity" event; c) Provision of easily unlocked means to exit workcell from within; d) Requirement that manufacturers provide Lockout/Tagout procedures in the Service and Maintenance Manual; e) Requirement that the brake release mechanism be readily accessible without the use of a key or special tools; f) Option to mount indicating lamp outside of the workcell in cases where there are high levels of process contaminants; g) Addition of horizontal-surface loading test; h) Clarification that supplemental tests are required for applications subjected to outdoor exposure; i) Updated requirements for identification of emergency control (E-stop) button; j) Clarification of marking requirements (identification) of multi-colored status-indicating lamps used with Robotic Systems; k) Clarification of requirement that individual E-stop buttons be marked to indicate their designated function; l) Requirement that parts subject to pressure (air hoses, hydraulic hoses, etc.) are reliably connected to the energy source unless located in an enclosure that would contain any rupture; m) Mechanical securement of rotary switches shall be by a means other than friction fit; n) Added Flammability rating exemption for small parts; o) Substitute term "Polymeric Materials" for "Insulating Materials"; p) Clarification that Production line tests include equipment that is permanently connected; q) Clarify that current carrying parts can include other materials such as carbon brushes; r) Clarify term "shock hazard" in teach pendant drop test; and s) Clarify requirements for use in water environments.