microGUARD Safety Light Curtain
Introducing MicroGuard, the revolutionary new light curtain from TRIAD Controls. MicroGuard is thin in design, fits into tight spaces, uses reliable infrared technology, solid state construction, is easy to install and continually visually communicates the system status with operators and plant personnel.
The MicroGuard advantage is the Advanced Smart Controller Design that allows the operator and plant personnel to perform immediate visual checks on the system status. There are 50 diagnostic messages which provide an exact determination of MicroGuard's operational status on a continual basis. Messages are easily viewed from the message display on the front of the controller. The operator can verify the condition of operation and status of the system at all times.
For the first time, MicroGuard's design allows a quick and easy resolution to system faults and maintenance concerns. Constant communication between the operator and MicroGuard will save valuable operating time by reducing machine down time. The self-diagnostic capability allows MicroGuard to troubleshoot itself by identifying system faults. This constant operating evaluation allows problems to be immediately corrected. This ensures that each MicroGuard user will get maximum machine utilization.
MicroGuard is user friendly. Simple cable hook-ups are used to activate MicroGuard. Power is common 110VAC, 240VAC, or 24VDC. The thin profile is easily mounted in tight spaces and is available in 30 sizes that can be adapted to any application need. The thin profile pylons feature 0.5-in. or 1-in. beam spacing with an easy alignment feature.
Solid state modular Nema IV construction is easy to maintain with snap-in circuit board construction. Lens covers are high impact plastic and are easily replaced. The redundant circuit and microprocessor design of MicroGuard ensures safe, uninterrupted operation.
MicroGuard is also designed for immunity to noise, light, weld flash and other ambient light sources.
The MicroGuard light curtain is available in both a Metal Box Controller Module or a compact 35 mm DIN-rail Controller Module.
Inherent Design Features:
Diverse Redundancy Design Concept
Triad safety light curtains utilize the diverse redundancy design concept. This gives the safety light system a higher level of redundancy and control reliability. The two microprocessors are of different design, and the microprocessor or parallel programs are run and made up from different instruction sets written by different programmers.
Self-Checking Circuitry
Triad safety light curtains self-check every 20 milliseconds. Self-checking is the ability to electronically verify that all of the systems critical internal circuit components and their redundant counterparts or back-ups are operating properly.
Extra Safe Design
Provides two methods of fail-safe design. One utilizes two microprocessors and two captive contact relays, and one uses four watchdog timers monitoring the system and the captive contact relays.
Redundant Captive Contact Safety Relays
Redundant relays assure safety if an output relay should fail. MicroGuard utilizes safety relays which have force-guided contacts. This is a configuration where the contacts are mechanically locked together so that if one set of contacts weld, the other contacts cannot change state. If one should fail, code "Relay Fault" will be displayed on the diagnostic message display. The complete guarding system consists of two miniature pylons with a controller for system diagnostics and wiring interface.
External Diagnostic Message Display
Standard on all Triad MicroGuard safety lights is the "External Diagnostic Display."
Alpha-numeric Plain English Messages
Scrolling message display shows status and fault codes of the unit. This is an excellent safety and maintenance feature, which is unparalleled in the machine guarding industry for enhancing machine utilization.
Critical components of the MicroGuard are duplicated so that a single component failure will not cause an unsafe condition. If a component does fail, the units self-checking circuitry recognizes the situation and initiates a safe stop of the machine. The fault is then displayed on the message display.
Powerful Infrared Light Source
Triad safety lights utilize powerful, safe, and predictable infrared light as its sensing source. This gives the system greater reliability and enhances machine utilization by minimizing nuisance trips and shutdowns caused by dirt, coolants, lubrication mists and machine oils. Triad safety lights are highly immune to EMI, RFI, and ambient light conditions and are unaffected by strobe lights and weld flash generated light sources.
Extensive Testing
Triad safety lights incorporate extensive testing and burn-in to establish a high degree of product reliability and safety.
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