Non Mandatory Appendix ***
MOTION CONTROL
PROPOSAL - MOTION CONTROL – Electric elevators
8.7.2.27.5 Change in Type of Motion Control. Rationale
Where there is a change in the type of motion control (the method of
controlling acceleration, speed, retardation and stopping), the
installation shall conform to the following:
(a) 2.7.2, 8.7.2.7.2, and 2.7.9 for the newly installed equipment Add requirements for path, clearance, and lighting as related to the new
control equipment, also add temperature and humidity requirements to ensure operation within specified limits
(b) all new and modified electrical equipment and wiring to 8.7.2.8. Add requirement for electrical equipment related to this alteration
(c)(a) The protection of the hoistway landing openings shall conform
to
(1) 2.11.1 through 2.11.13, except 2.11.11.9, except;
(a) existing entrance openings less than 2030mm in height or 800mm in width are permitted to be retained,
Review the details of 2.11.1 through 2.11.13 and determine the validity of the requirement. Provide concessions where the new requirement is overly excessive (which might result in the complete removal of the entrances due to minor failings). Allow minor deficiencies to today’s code where possible.
PROPOSAL - MOTION CONTROL – Electric elevators
8.7.2.27.5 Change in Type of Motion Control. Rationale
(b) requirement 2.11.1.4 Allow smaller sized entrances to remain
Exclude the requirement to provide cleaning openings – the motion control change is not related to access openings for cleaning.
(2) 2.11.2 through 2.11.10, while a change in motion control has little implications related to
protection of hoistway openings, the majority of installations will likely be in compliance with these requirements - therefore include
requirements related to types of entrances, closing of h/w doors, location of h/w doors, projection of sills, and opening of h/w doors. Include weights for door balancing, h/w door locking devices and landing sill guards
(3) 2.11.11.6 through 2.11.11.8, and 2.11.11.10 Purposely exclude the majority of 2.11.11 as full compliance would
likely result in the removable of all entrances due to a motion control change. Include the requirements bottom guides, multi-panel entrances, hoistway door safety retainers and h/w door to sill clearance
(4) 2.11.12.8. Same rational is above, include basic requirement related to pull straps
(d) 2.12, except;
(1) a minimum engagement of 6mm is permitted in requirement 2.12.2.4.3 and
(2) 2.12.4,
where existing door locking devices are being retained. and
Modify 2.12.2.4.3 to permit a known interlocks with a 6mm engagement to be retained,
exclude the requirement for listing/certification of existing locks if locks are being retained,
(e) 2.13. Retain requirements related to power operation of h/w doors including
door force and kinetic energy
(f)(b) Car enclosures and car doors or gates shall conform to 2.14,
except that where existing car enclosures and/or car doors or gates are retained, conformance with the following requirements is not required:
PROPOSAL - MOTION CONTROL – Electric elevators
8.7.2.27.5 Change in Type of Motion Control. Rationale
and 2.14.1.9, are retained, Permit glass to be retained in the car interior, allow car
interiors equipment inside cars to be retained, side exits if existing must be removed,
(2) requirements 2.14.2.1, 2.14.2.3, and through 2.14.2.5
2.14.2.4 allow car headroom and vision panels to remain
(3) requirements 2.14.2.6(d) and 2.14.2.6(f) access panels need not comply with the self-locking requirement and
their location does not need to be modified
(4)(3) requirement 2.14.3
(5)(4) requirements 2.14.4.2.5 if existing interlocks or contacts
are retained, 2.14.4.3 and 2.14.4.6 Exclude the requirement for interlocks or car gate contacts to be tested / listed if existing locks / contacts are retained.
(6) requirement 2.14.5.1, 2.14.5.6 through 2.14.5.8 Permit the number of entrances on the car to be retained – to match
existing building entrance configuration. Permit existing car door panel overlaps, panel depressions and other dimensional attributes to remain, retain manual opening of car door requirement and glass in car doors to remain
(7) requirement 2.14.6.2.2 except 2.14.5 shall be as amended in
(6) Require compliance for freight elevator car door and gates except read applicable 2.14.5 requirements as shown above
(8) requirement 2.14.7.1.3, 2.14.7.1.4 and 2.14.7.2 through
2.14.7.4 Require compliance to illumination of cars and lighting fixtures except exclude emergency lighting requirement and permit exist means to be
retained, exclude requirement for car top receptacle, exclude details related to light control switch requirements, exclude requirements related to car lighting and protection of light bulbs - thereby allowing this portion of the cab interior to be retained as a result of a motion control change,
(g) Where conformance to 2.14.1.7.1 is not possible due to existing overhead conditions, an alternative solution, acceptable to the authority having jurisdiction, providing equivalency to 2.14.1.7.1
Recognize that a standard railing height may not be feasible, in which case an alternate solution of equivalency is permitted. The solution must be acceptable to the authority having jurisdiction. (Ref: see TN 10-791)
PROPOSAL - MOTION CONTROL – Electric elevators
8.7.2.27.5 Change in Type of Motion Control. Rationale
shall be permitted.
(h)(c) The car safety, the counter weight safety (where provided), and the governor shall conform to 2.17 and 2.18, except that
(1) where the safety factors required by 2.17.12.1 cannot be ascertained, rated load testing shall be accepted as demonstration of compliance, and
(2) the pitch diameter of speed governor sheaves and governor tension sheaves are not required to conform to 2.18.7.4.
Requirement 2.17.12.1 is a factor of safety requirement which may not be available as a calculation during this alterations – in this case permit physical testing so that the safety can be retained if the actual factor of safety is unknown.
Update reference to be more exact.
(i)(d) The capacity and loading shall conform to 2.16.8 A complete verification of capacity and loading during a motion control change is unwarranted. However testing is with 125% load as required by the referenced sections is retained. By requiring full compliance to 2.16, the extensive review of the elevators capacity and loading compliances may prohibit this upgrade.
(j)(h) Car overspeed protection and unintended movement protection shall conform to 2.19.
(k)(e) The terminal stopping devices shall conform to 2.25.
(l)(f) The operating devices and control equipment shall conform to 2.26. The requirements of 2.26.4.2, 2.26.4.3, and2.26.4.4 shall not apply to electrical equipment unchanged by the alteration.
(m)(g) In jurisdictions not enforcing NBCC, emergency operation and signaling devices shall be provided and shall conform to 2.27.
In jurisdictions enforcing NBCC, the following shall be complied with;
(1) car emergency signaling devices complying with requirement 2.27.1, and
(2) emergency operation and signaling devices conforming to
2.27.2 through 2.27.9 where required by NBCC, or a prior
edition of B44. shall be provided and shall conform to 2.27.
Clarify 2.27.1 car emergency signaling devices are required in all cases and emergency operation and signaling devices of 2.27.2 through 2.27.9 are required if previously provided either as a result of compliance to NBCC, or prior editions of B44.
PROPOSAL - MOTION CONTROL – Electric elevators
8.7.2.27.5 Change in Type of Motion Control. Rationale
MOTION CONTROL
In conjunction with review of 8.7.3.31.6 add definition for clarification of proposed requirement. PROPOSAL - MOTION CONTROL – Hydraulic elevators
Section 1.3 Definitions Rationale
Under control, motion…. revise / add the following definitions
control, mechanical-hydraulic : a motion control in which acceleration, speed, retardation and stopping are governed by varying the fluid flow to/from the hydraulic jack by direct mechanical operation of the valves
by shipper rope or operating lever device.
To determine what a change to motion control means for a hydraulic elevator it is essential to first understand the possible methods of motion control. Currently there is only one defined method of motion control for hydraulic elevators therefore difficult to know when and if the method was changed. To facilitate in understanding a motion control change for hydraulic elevators, provide a more complete list of motion control methods.
Therefore, although obsolete in use, we must define an older potentilally existing form of motion control.
The existing definition does not recognize older mechanical control valves which will be replaced during an alteration. The existing
definition was revised to include the use of pilot valves in modern valve designs.
See also Inquiry 93-47 as clarification related to these proposed definitions.
control, electrohydraulic: a motion control in which the acceleration, speed, retardation and stopping are governed byvarying the fluid flow to/from the hydraulic jack by electrically operated valves.
PROPOSAL - MOTION CONTROL – Hydraulic elevators
8.7.3.31.6 Change in Type of Motion Control. Rationale
Where there is a change in the type of motion control (the method of
controlling acceleration, speed, retardation and stopping), the
installation shall conform to the following:
(a) 2.7.2, 8.7.2.7.2, and 2.7.9 for the newly installed equipment. Add requirements for path, clearance, and lighting as related to the new
control equipment, also add temperature and humidity requirements to ensure operation within specified limits
(b) all new and modified electrical equipment and wiring to 8.7.3.8. Add requirement for electrical equipment related to this alteration
(c) (a) The protection of the hoistway landing openings shall
conform to
(1) 2.11.1 through 2.11.13 except 2.11.11.9, as modified by 3.11.1, and conform to 3.12.1 and 3.13.except;
(a) existing entrance openings less than 2030mm in height or 800mm in width are permitted to be retained,
(b) requirement 2.11.1.4
Review the details of 2.11.1 through 2.11.13 and determine the validity of the requirement. Provide concessions where the new requirement is overly excessive (may warrant the complete removed of the entrance for minor failings) and allow where possible.
Allow smaller sized entrances to remain
Exclude the requirement to provide cleaning openings – the motion control change is not related to access openings for cleaning
(2) 2.11.2 through, and 2.11.10 while a change in motion control has little implications related to
protection of hoistway openings, the majority of installations will likely be in compliance with these requirements - therefore include
requirements related to types of entrances, closing of h/w doors, location of h/w doors, projection of sills, and opening of h/w doors. Include weights for door balancing, h/w door locking devices and landing sill guards
(3) 2.11.11.6 through 2.11.11.8, and 2.11.11.10 Purposely exclude the majority of 2.11.11 as full compliance would like
result in the removable of all entrances due to a motion control change. Include the requirements bottom guides, multi-panel entrances,
hoistway door safety retainers and h/w door to sill clearance
(4) 2.11.12.8 Same rational is above, include basic requirement related to pull straps
PROPOSAL - MOTION CONTROL – Hydraulic elevators
8.7.3.31.6 Change in Type of Motion Control. Rationale
(1) a minimum engagement of 6mm is permitted in requirement 2.12.2.4.3 and
(2) 2.12.4,
where existing door locking devices are being retained. and
to be retained,
exclude the requirement for listing/certification of existing locks if locks are being retained,
(e) 3.13. Retain requirements related to power operation of h/w doors including
door force and kinetic energy
(f)(b) Car enclosures and car doors or gates shall conform to 3.14,
except that where existing car enclosures and/or car doors or gates are retained, conformance with the following requirements is not required:
(1) Requirements 2.14.1.3, 2.14.1.5.1, and 2.14.1.6.2, 2.14.1.8,
and 2.14.1.9, Two horizontal (refuge) areas on the car top are not required if car tops are retained, Permit glass to be retained in the car interior, allow car
interiors equipment inside cars to be retained, side exits if existing must be removed,
(2) requirements 2.14.2.1, 2.14.2.3, and through2.14.2.4
2.14.2.5 allow vision panels to be retained,
(3) requirements 2.14.2.6(d) and 2.14.2.6(f) access panels need not comply with the self-locking requirement and
their location does not need to be modified
(4)(3) requirement 2.14.3
(5)(4) requirements 2.14.4.2.5 if existing interlocks or contacts
are retained, 2.14.4.3 and 2.14.4.6 Exclude the requirement for interlocks or car gate contacts to be tested / listed if existing locks / contacts are retained.
(6) requirement 2.14.5.1, 2.14.5.6 through 2.14.5.8 Permit the number of entrances on the car to be retained – to match
existing building entrance configuration. Permit existing car door panel overlaps, panel depressions and other dimensional attributes to remain, retain manual opening of car door requirement and glass in car doors to remain
PROPOSAL - MOTION CONTROL – Hydraulic elevators
8.7.3.31.6 Change in Type of Motion Control. Rationale
(7) requirement 2.14.6.2.2 except 2.14.5 shall be as amended in
(6) Require compliance for freight elevator car door and gates except read applicable 2.14.5 requirements as shown above
(8) requirement 2.14.7.1.3, 2.14.7.1.4 and 2.14.7.2 through
2.14.7.4 Require compliance to illumination of cars and lighting fixtures except exclude emergency lighting requirement and permit exist means to be
retained, exclude requirement for car top receptacle, exclude details related to light control switch requirements, exclude requirements related to car lighting and protection of light bulbs - thereby allowing this portion of the cab interior to be retained as a result of a motion control change,
(g) Where conformance to 2.14.1.7.1 is not possible due to existing overhead conditions, an alternative solution, acceptable to the authority having jurisdiction, providing equivalency to 2.14.1.7.1 shall be permitted.
Recognize that a standard railing height may not be feasible, in which case an alternate solution of equivalency is permitted. The solution must be acceptable to the authority having jurisdiction. (Ref: see TN 10-791)
(h)(c) The car safety (where provided), the counterweight safety (where provided), shall conform to 3.17 and the governor (where provided) shall conform to 2.18, except that
(1) where the safety factors required by 2.17.12.1 cannot be ascertained, rated load testing shall be accepted as demonstration of compliance, and
(2) the pitch diameter of speed governor sheaves and governor tension sheaves are not required to conform to 2.18.7.4.
Requirement 2.17.12.1 is a factor of safety requirement which may not be available as a calculation during this alterations – in this case permit physical testing so that the safety can be retained if the actual factor of safety is unknown.
Update reference to be more exact.
(i)(d) The capacity and loading shall conform to 3.16.
(j)(e) The terminal stopping devices shall conform to 3.25.
(k)(f) The operating devices and control equipment shall conform to 3.26. Requirements of 2.26.4.2 and 2.26.4.4 shall not apply to electrical equipment unchanged by the alteration.
(l)(g) In jurisdictions not enforcing NBCC, emergency operation and signaling devices shall conform to 3.27.
PROPOSAL - MOTION CONTROL – Hydraulic elevators
8.7.3.31.6 Change in Type of Motion Control. Rationale
complied with;
(1) car emergency signaling devices complying with requirement 2.27.1, and
(2) emergency operation and signaling devices conforming to 3.27
where required by NBCC, or a prior edition of B44. shall be provided and shall conform to 2.27.
and
emergency operation and signaling devices are required if previously provided either as a result of compliance to NBCC, prior editions of B44
Revise the NBCC requirement to require 3.27 as applicable for hydraulic installations.
(m)(h)Equipment and floors shall be identified as required by 2.29
CONTROLLERS
PROPOSAL - CONTROLLER – Electric elevators
8.7.2.27.4 Controllers Rationale
(a)Where a motion controller is installed, without any change in the
type of motion control, and without replacing the existing operation control, the installation shall conform to the following:
8.7.2.27.5 provides requirements for when the motion control is changed to a different type of motion control.
8.7.2.27.4(a) specifies some basic essentials and some safety enhancements when the motion control is updated but where the method of motion control remains the same.
(1) requirements 2.7.2, 8.7.2.7.2, and 2.7.9 for the newly installed
equipment Add requirements for path, clearance, and lighting as related to the new equipment, also add temperature and humidity requirements to
ensure operation within manufacturers specified limits
(2) requirement 8.7.2.8 and 2.26.4.2 for the newly installed
equipment Electrical equipment to meet electrical code and as applicable meet requirements of B44.1/A17.5
(3) requirement 2.19, except 2.19.2.2(a)(1) to 2.19.2.2(a)(3) is not required if the code at the time of the original installation was prior to A17.1-2000/B44-00
Add an important safety requirements if not already present - but permit reduced redundancy and checking of the detection means for installations installed prior to A17.1-2000/B44-00 where the current controllers or control systems may be lacking in this regard.
PROPOSAL - CONTROLLER – Electric elevators
8.7.2.27.4 Controllers Rationale
circuits of the newly installed equipment
(5) 2.29 No change. Retain existing requirement
(b)Where an operation controller is installed, and the type of
operation control, if automatic remains automatic, or, if non-automatic remains continuous pressure, car switch, or other type of operation where the movement or stopping of the car is under the manual control of the operator (non-automatic), and the existing motion control equipment is retained, the installation shall conform to the following:
8.7.2.27.6 provides requirements for when the operation control is changed from a form of constant pressure to automatic.
8.7.2.27.4(b) specifies some basic requirements and some safety enhancements when operation control is updated but where the method of operation control remains the same.
(1) requirements 2.7.2, 8.7.2.7.2, and 2.7.9 for the newly installed
equipment Add requirements for path, clearance, access and lighting as related to the new equipment, also add temperature and humidity requirements
to ensure operation within manufacturers specified limits
(2) requirement 8.7.2.8 and 2.26.4.2 for the newly installed
equipment Electrical equipment to meet electrical code and as applicable meet requirements of B44.1/A17.5
(3) requirement 2.26.9.3.1(d) and (e), 2.26.9.3.2 and 2.26.9.4 for
the newly installed equipment Provide requirements related to the design of “Control and Operating Circuits” of the newly installed equipment, but limit the scope of
2.26.9 to 2.26.9.3.1(d) and (e), 2.26.9.32 and 2.26.9.4 which have or may have implications for “operation control” design.
(4) 2.29 Retain this current requirement.
Note: Where the installation of an operation control alters emergency operation and signaling devices the requirements of 8.7.2.28 apply.
Operation controller upgrades can easily accomplish aspects of FEO. If operation control changes includes changes to FEO, then the provisions of 8.7.2.28 are applicable. This note is intended to provide guidance about other existing alteration requirements.
(c)(a) Where both a motion controller and anor operation controller
PROPOSAL - CONTROLLER – Electric elevators
8.7.2.27.4 Controllers Rationale
control as described in 8.7.2.27.4(a) and orwithout any change in the
type of motionoperation control as described in 8.7.2.27.4(b), itthe
installation shall conform to the following,
enhancing reliability, but without forcing major upgrades to current code requirements.
(1) requirements 2.7.2, 8.7.2.7.2, and 2.7.9 for the newly installed
equipment Add requirements for path, clearance, and lighting as related to the new equipment, also add temperature and humidity requirements to
ensure operation within manufacturers specified limits
(2) requirement 8.7.2.8 and 2.26.4.2 for the newly installed
equipment Electrical equipment to meet electrical code and as applicable meet requirements of B44.1/A17.5
(3) requirement 2.19, Adds an essential safety requirement if not already present. There are
few to none other alteration opportunities which would invoke the requirements of 2.19 therefore it is targeted at this opportune time.
(4)(1) Terminal stopping devices shall conform to 2.25. No change. Retain existing requirement.
(5)(2) The newly installed operating devices and control
equipment shall conform to 2.26.1.2, 2.26.1.4, 2.26.1.5, 2.26.1.6, 2.26.2 through 2.26.9, and 2.26.11.
Retain existing requirement.
Add 2.26.1.2 requirement to be consistent with hydraulic
requirements. Clarify requirements are applicable to newly installed equipment only.
(6)(3) Requirement 2.27.2 applies when emergency power is
provided. No change. Retain existing requirement.
(7)(4) In jurisdictions not enforcing NBCC, 2.27.3 through 2.27.9 apply
(a) when travel is 8 m (25 ft) or more above or below the designated landing; or
(b) on installations when firefighters’ emergency operation was required or provided at the time of installation.
No change. Retain existing requirement.
(8)(5) In jurisdictions enforcing NBCC, 2.27.3 through 2.27.9 apply only if firefighters’ emergency operation was required or provided at the time of installation.
No change. Retain existing requirement.
(9) 2.29 No change. Retain existing requirement.
PROPOSAL - CONTROLLER – Electric elevators
8.7.2.27.4 Controllers Rationale
doors, or car gates is installed, see 8.7.2.12. all new and modified
equipment and wiring shall conform to 2.26.4.1 and 2.26.4.2. requirement 8.7.2.8 which deals with the installation of all new or altered electrical equipment. Move this requirement and conformance to 2.26.4.1 to alteration requirement 8.7.2.12 which deals with power operation of hoistway doors. This is a more appropriate location for