18.104.22.168.3 Moving Walk Driving-Machine Motor-Controlled Dynamic Braking
(b) The moving walk driving-machine brake complying with 22.214.171.124.3 and 126.96.36.199.1 shall be applied not later than when the moving walk has stopped. Interruption of electrical power to the moving walk or machine motor shall automatically cause application of the machine brake.
(c) Activation of electrical protective devices that do not specifically permit dynamic braking shall stop the moving walk only by the removal of electrical power from the driving-machine motor and brake.
(d) Stopping performance shall be monitored in conformance with 188.8.131.52 throughout the retardation period at intervals not greater than 25 ms and shall cause the removal of electrical power from the driving-machine motor and brake if the deceleration is not conforming to the requirements in 184.108.40.206.1(c) or it is determined that the stopping rate will not result in a stopping distance conforming to the requirements of 220.127.116.11.1(d)(5), where applicable. Nonconformance shall require a manual reset.