The rated speed vn is the basis to determine the tripping speed va to EN 81-20:2020 5.6.2.2.1.1.It is differentiated between rated speeds up to 1 m/s and greater than 1 m/s.The type of safety gear used in lifts with rated speeds < 1 m/s is important as well.We therefore ask for both the rated and the tripping speed.We are happy to help to determine the correct tripping speed.With our calculation tool you can calculate the tripping speed and copy it into the field below.
Mounting position
If console mounting is required, please select console as accessory.
Overspeed governor type selection
Overspeed governor wheel
Position switches indicate the status of the overspeed governor. They are safety switches acc. to EN ISO 13849-1, that are typically directly integrated into the passive safety circuit of the lift.
There are non-latching and latching position switches. In contrast to the non-latching position switches, latching positions switches are reset either manually or electrically.
Lift controls, that do not automatically lock the stop-signal after the overspeed governor has tripped, have to use latching position switches. Up until these switches have been reset the lift is electrically locked.
The contact configuration of the switch depends on the requirements of lift's control system.
An interactive explanation of the different switches can be found here.
Standard position switch
At rated speeds greater than 1 m/s, the lift system must be electrically switched off and stopped before the mechanical tripping speed va is reached.
Those pre-cut off switches are therefore latching ones and can be reset electrically or manually.
Selection of pre-cut off switches
Tripping direction
To detect the lift's travel direction when the overspeed governor tripped, one or two additional positions switches can be mounted. They can be latching or non-latching ones.
UCMP
The UCMP-solenoid is energised during lift travel and de-energised during standstill. When the car moves unintentionally, the UCMP-device blocks the overspeed governor and engages the safety gear. The delivery includes the UCMP-solenoid, a position switch and a mounting bracket.
Remote Release
The remote release is a solenoid that can be actuated during lift travel. It will mechanically block the overspeed governor and as a result of this the safety gear will be actuated. It is used purely for test purposes and must therefore be secured against misuse.
Cover
Console
Adapter plate
Incremental encoder mounting kit
Accessories
