BHMA A156-25:2002 pdf download.AMERICAN NATIONAL STANDARD FOR ELECTRIFIED LOCKING DEVICES
1 SCOPE
1.1 Electrified locking systems are comprised of input devices, locking devices, controlling devices,and power supplies. This Standard establishes requirements for electrified locking devices, which control door access. When the input or controlling device or both are an integral part of the locking device, they shall also be covered by this standard. This standard includes requirements for cyclical,security, operational, strength, environmental, and finish tests for these products.
1.2 Tests described in this Standard are performed under laboratory conditions. In actual usage,results may vary because of installation, maintenance, and environmental conditions.
2 DEFINITIONS
2.1 Accessory Equipment Pieces of equipment attached to or added to a product and are of such size that they are capable of being marked for identification by a catalog number or equivalent.Accessory equipment usually is dependent upon a basic part of a system for mechanical support,electrical input, or both; and may or may not, by itself, perform a complete function.
2.2 Controlling Device A device that processes the input signal and gives instructions to the output device to perform certain functions.
2.3 Duty Cycle A figure of merit applied to devices designed to operate only intermittently. It requires two numbers to specify: the maximum percentage of time the device may be activated and the maximum continuous activation time.
2.4 Elctrical Fast Transient (EFT) "Transient" is a term applied to either parameter (Current or voltage). It describes either parameter (current or voltage) as a function of time during the period of adjustment (the transient period) when in a steady-state-circuit a switch is activated which changes the circuit and the parameters are adjusting to their new steady-state values. "Fast" is an arbitrary term,which describes the time between switch activation and the parameter becoming asymptotic to its new value. For the purposes of this Standard, a transient period of a millisecond or less is regarded as a "fast transient" or EFT.
2.5 Elctrified Locking Device An electrically powered device which enables a door to be locked or unlocked in response to an electric signal from an input or controlling device. Also called Electrified Output Device.
3.1 Devices Covered Electrified locking devices include mortise locks, bored locks, preassembled locks, auxiliary locks, interconnected locks, delayed egress locks, exit devices, exit locks, and cylinders.
3.2 Features
The various combinations of current and voltages, monitoring systems, types of locking devices and locking functions, failure modes, use of motors or solenoids, and use of mechanical overrides provide for the description of several hundred separate functions of electrified locking devices. For this reason, no function or type descriptions are given in this Standard. Specify each of the features desired and verify that the resulting product described is available. Consult manufacturers' catalogs. See Appendix A for a list of some typical features available.BHMA A156-25 pdf download.