Sectional door safety: A new
solution
 Working
with Vitector, a leading manufacturer of safety devices
for automatic doors, GfA are able to bring to the UK
market a new contactless safety device for sectional
doors. The new RAY-NC non-contact sensor
system hangs below the leading edge of the
door traveling with the door edge and detecting
obstacles in the path of the moving door before any
physical contact occurs. It offers a convenient, safe
and cost effective solution for new doors or
retro-fitting existing installations.
RAY-NC in a
nutshell
 Contactless
safety device for sectional doors- Quick and easy to install
- Suitable for new doors and retro-fitting
- Intelligent sensor for added safety
- Cost effective alternative to other door safety
devices
Key Features
- Advanced software differentiates transmitted and
reflected light
- Intelligent sensor reduces the need for critical
alignment of the transmitter
- 9 metre operating range
- Temperature tolerance from -20 to +55⁰C
- Complies with EN12978 requirements
Under
the bonnetThe RAY-NC features
two optical modules, a transmitter and receiver that
would typically be installed on opposite corners of a
large automatic door. When the infrared light beam
between these two devices is interrupted, a warning
signal is passed to the door’s control system to stop
the door. The RAY-NC uses advanced software to
differentiate between directly transmitted light and
reflected light so that there is much less chance of
failure to recognise an obstacle. The new
intelligent sensor approach allows the use of a
relatively broad infrared beam (+/- 10 degrees). This
reduces the need for critical alignment of the
transmitter unit when the system is installed and makes
the system more tolerant to random motions of the beam
due to vibrations in the door. As a result, installation
of the RAY-NC system is quick and easy for new doors, or
as a retrofit for older equipment. The RAY-NC
optical transmitter and receiver modules are designed to
extend below the lower edge of a vertical-moving door
and then retract into protective housings when the door
reaches the closed position. The operating range is 9
metres, enough for most commercial and industrial doors.
VITECTOR RAY-NC systems are suitable
for outdoor use: all components have a protection rating
of IP65 and an operating temperature range of -20 -
55⁰C. Download a datasheet for the RAY-NC
non-contact sensor here. | 
