The SG 1 is the latest generation of light curtain systems from the SpaceGuard series. The SG 1 is a technologically advanced, self-contained light curtain series that has been designed around ease-of-use, performance, reliability and uncompromising door protection.
The complete system consists of a transmitter detector unit (SGT) and a receiver detector unit (SGR) which are each housed in a sturdy slimline aluminium profile. Control circuitry, electronics and optical components are all integrated into the detector profiles enabling direct connection to a door operator or lift controller. The system's multiple channels generate a dense grid of infrared cross beams ensuring maximum protection.
Additionally the system offers a multitude of essential features including time-out function, test input, automatic signal tracking (AST) and optional alarm output. Telco's fundamental attributes are naturally also incorporated in the SG 1 series with its easy alignment, high light immunity, durable housing, exceptional sensing range and reliable performance under the most challenging conditions.
Nothing gets caught in elevator doors equipped with the SG 1. The SG 1 series offers a high performance 40 channel model that generates 194 infrared scanning cross beams creating a very dense light grid covering the entire doorway that remains constantly active until the fully closed position of the elevator doors. The 40 channels are concentrated over an active height of 1,8 m ensuring a very narrow space of 46 mm between each channel. Even small objects like a child's hand or the tip of an umbrella will activate the light curtain and keep the doors from closing prematurely. A 20 channel model is also available that generates 94 constantly active cross beams for less demanding applications.
The SG 1 is housed in a sturdy slimline detector profile that provides flexible mounting possibilities, and will fit in virtually any elevator application and in the narrowest of profiles. This system is self-contained and only requires a 12-36 V d.c. supply voltage whilst providing a transistor output enabling direct connection to a door operator or lift controller. No external power supply or controller unit is required. Installations where a DC supply voltage is not available and/or where a relay output is required, an optional Telco power supply unit is available. Moreover, the SG 1 is engineered for both dynamic and static installations and is suitable for both new and existing elevator installations, making the SG 1 a versatile solution.
The SG 1 assures quick and effortless installation with no on-site setup or adjustments. The ever changing operating conditions within an elevator installation are a challenge for any infrared door protection system. That is why Telco has developed a special feature, automatic signal tracking (AST), that continuously monitors the signal level and adjusts the sensitivity of each individual channel. This achieves optimum performance according to the operating conditions by continuously compensating for misalignment, ageing of components and moderate contamination. Furthermore, easy installation is guaranteed with the SG 1 with Telco's infamous easy alignment feature.
If the time-out function is enabled during installation, a factory set number of non-adjacent channels will automatically be ignored if permanently obstructed for 10 seconds or more. This is a useful service feature that ensures safe and reliable operation of a system with a vandalised detector or a deteriorated optical component until arrangements can be made for servicing or replacement. An optional alarm output is also available that is intended for external elevator monitoring used to inform the lift controller that there is a faulty detector unit or the time-out is activated. Additionally, the standard test input enables a lift controller to perform an overall system-function test by temporarily disabling the transmitter beams imitating an obstruction.
The advanced optoelectronics design ensures a 5 m sensing range and an outstanding immunity to interference from reflections and even direct sunlight, preventing false activations during operation. Even the most challenging applications, such as high-polished aluminium or glass panoramic elevator cabins, do not present a problem for the SG 1. In addition, the SG 1 has a high EMC performance and is compliant with all international standards (including elevator safety code EN 81-70).
| Tel: | +27 31 701 4861/2 |
| Fax: | +27 31 702 9819 |
| Email: | [email protected] |
| www: | www.gailnortoninstrumentation.co.za |
| Articles: | More information and articles about Gail Norton Instrumentation |
© Technews Publishing (Pty) Ltd | All Rights Reserved
printer friendly version