FIBER OPTIC ACCESS AND PERIMETER SAFEGUARDING, EVEN FOR EXPLOSIVE ATMOSPHERES

Description

Banner Engineering Corp. has introduced PICO-GUARD™ Fiber Optic Safety Grids for personnel safety and equipment protection applications. Designed for use with the PICO-GUARD Fiber Optic Controller, PICO-GUARD Grids provide a reliable optically based, non-contact solution for perimeter and access guarding and are rated for use in explosive environments. They feature a rugged, MEK-resistant, aluminum protective housing and are available with 2, 3 or 4 beams that can function as an emitter or receiver. Preconfigured for proper beam spacing, the Grids perform reliably at ranges up to 31 m and protective heights up to 1066 mm. "PICO-GUARD Grids offer a reliable, cost-effective means to safeguarding,” said Mike Carlson, technical manager for Banner’s safety products. “The optical elements are specifically engineered to withstand harsh environments.” Carlson adds, “The Fiber Optic Grids are ideal for guarding hazardous areas in explosive environments such as paint booths or similar applications because they use no electricity at the point of detection.” Applications. PICO-GUARD Grids meet requirements for use in explosive environments. Examples include the following: Paint booths Paint and stain manufacturing Gaseous fill, such as cigarette lighters Cosmetic and perfume manufacturing Film and web processing Chemical processing Battery manufacturing Pharmaceutical manufacturing Semiconductor processing Several features of the PICO-GUARD Grids make them particularly easy to install and use: Features rugged anodized aluminum MEK-resistant housing with field-replaceable glass lens window Offers ATEX, FM and CSA explosive environment certification ratings Certified to ISO 13849-1 Category 4 and IEC 61496 Type 4 requirements Rated IEC IP65 Provides preconfigured beam spacing from 300 to 584 mm and protective heights to 1066 mm Offers excellent range of up to 31 m, depending on fiber length Installs easily with a variety of mounting bracket options Includes integral 7 mm diameter pre-coated fibers with polished ends Available with fiber lengths from 2.4 to 30 m Offers optional MEK-resistant conduit for added fiber protection PICO-GUARD Grids work in conjunction with the PICO-GUARD Fiber Optic Controller. The PICO-GUARD Controller features four optical channels with multiple inputs per channel and includes two Universal Safety Stop Interface (USSI) inputs for direct connection of multiple safety devices. Controllers operate on 24V dc with selectable trip or latch output, external device monitoring and auto/manual power-up. All models mount directly to DIN rail or panels and have removable terminal blocks for convenience. Models are available with auxiliary outputs and muting function.

Specs

• System Power Requirement*24V dc ±15% (SELV), 10% max. ripple; 250 mA max., exclusive of output loads. External supply must be in accordance with IEC 61558 (EN 60742). Short Circuit ProtectionAll inputs and outputs are protected from short circuits to +24V dc or dc common Response TimeOptical channel:13 milliseconds max. Time between the opening of optical switch and the OSSD safety outputs turning off.) USSI inputs:7 milliseconds max. (Time between actuation of the safety stop input device and the OSSD safety outputs turning off.) Safety RatingType 4 per IEC 61496-1; Category 4 per ISO 13849-1 (EN 954-1) External Device Monitoring (EDM) InputTwo inputs for external device monitoring (EDM). Each input monitors the status of a normally closed, forced-guided monitor contact of an external safety device or MPCE. The EDM inputs must be high (10 to 30V dc) when the external device or MPCE is OFF, and must be low (less than 3V dc) when the external device or MPCE is ON. External devices or MPCEs must meet certain timing requirements, depending on the configuration setting. System Reset InputThe Reset input must be high (10 to 30V dc) for 0.25 to 2 seconds and then low (less than 3V dc) to reset the system from a manual power-up, optical channel latch or system lockout condition. USSI 1 Reset InputSFCDT-4A1 and SFCDT-4A1C:The Reset input must be high (10 to 30V dc) for 0.25 to 2 seconds and then low (less than 3V dc) to reset the system from a USSI 1 latch condition. SFCDT-4A1CM1:Universal Safety Stop Interface (USSI) input is not available. USSI 1 InputSFCDT-4A1 and SFCDT-4A1C:Dual-channel, redundant inputs for monitoring output contacts or “handshake” compatible safety solid-state outputs of other safety stop devices. OFF (stop) signals cause the PICO-GUARD OSSDs to latch OFF (Latch condition). SFCDT-4A1CM1:Universal Safety Stop Interface (USSI) input is not available. USSI 2 InputSFCDT-4A1 and SFCDT-4A1C:Dual-channel, redundant inputs for monitoring output contacts or “handshake” compatible safety solid-state outputs of other safety stop devices. OFF (stop) signals cause the PICO-GUARD OSSDs to turn OFF (Trip condition). SFCDT-4A1CM1:Universal Safety Stop Interface (USSI) input is not available. Safety OutputsTwo redundant solid-state 24V dc, 0.5 A max. sourcing OSSD (Output Signal Switching Device) safety outputs. (Use optional interface modules for ac or larger dc loads.) Capable of the Banner “Safety Handshake” ON-state voltage:Vin-1.5V dc max. OFF-state voltage:1.2V dc max. Max. load resistance:1,000 ohms Max. load capacitance:0.1 µF OSSD test pulse width:100 to 300 microseconds OSSD test pulse period:6 milliseconds Non-Safety OutputsSolid-state 24V dc (Vin-1.5V dc max.), 0.25 A max. sourcing (PNP) non-safety outputs SFCDT-4A1:Aux., Weak Signal, Fault SFCDT-4A1C:Aux., Weak Signal, Fault, Ch1-4 SFCDT-4A1CM1:Aux./Mute Lamp, Mute Lamp, Fault, Ch1-4 Muting Device InputsSFCDT-4A1CM1:The muting devices work in pairs (MS1 and MS2, MS3 and MS4) and are required to be “closed” within 3 seconds of each other (simultaneity requirement) to initiate mute (assuming all other conditions are met). SFCDT-4A1 and SFCDT-4A1C:Muting is not available. Mute Enable InputSFCDT-4A1CM1:When Mute Enable is selected (functional), this input must have +24V dc applied in order to start a mute; opening this input after mute has begun has no effect. SFCDT-4A1 and SFCDT-4A1C:Muting is not available. Remote Status InterfaceIsolated RS-232 non-safety output (4800 Baud rate) for setup or monitoring the system status. Connections provided for a Remote Display unit Controls and AdjustmentsSFCDT-4A1 and SFCDT-4A1C:Redundant switches for Auto/Manual power-up, Trip/Latch output operation and 1- or 2-channel EDM operation. Redundant switches for ON/OFF of each optical channel. (NOTE: At least one optical channel must be ON.) SFCDT-4A1CM1:Redundant switches for Auto/Manual power-up, Trip/Latch output operation and 1- or 2-channel EDM operation. Redundant switches for ON/OFF of two optical channels. (2 and 4; channels 1 and 3 are always enabled). Redundant switches for muting configuration. Ambient Light ImmunityLess than 10,000 lux @ 5° angle of incidence Strobe Light ImmunityTotally immune to one Federal Signal Corp. “Fireball” model FB2PST strobe Emitter ElementVisible red LED, 660 nm at peak emission Status IndicatorsSFCDT-4A1 and SFCDT-4A1C: • System Status (bicolor Red/Green):overall status of the PICO-GUARD system • System Reset (bicolor Yellow/Red):status of the input; indicates system reset needed • Channel (4 bicolor Red/Green):each shows the status of one optical channel • USSI (2 bicolor Red/Green):status of the USSI input channels (a-b and c-d) • USSI 1 Reset (bicolor Yellow/Red):status of USSI 1 reset input; indicates USSI 1 reset needed • EDM (2 bicolor Red/Green):status of the EDM input channels • OSSD (2 bicolor Red/Green):status of the OSSD outputs • Config (bicolor Red/Green):status of the system configuration • SFCDT-4A1CM1: • System Status (bicolor Red/Green):overall status of the PICO-GUARD system • System Reset (bicolor Yellow/Red):status of the input; indicates system reset needed • Channel (4 bicolor Red/Green):each shows the status of one optical channel • Muting (4 bicolor Red/Green):status of the muting input • Mute Enable (bicolor Yellow/Red):status of mute enable • EDM (bicolor Red/Green):status of the EDM input channels • OSSD (bicolor Red/Green):status of the OSSD outputs • Config (bicolor Red/Green):status of the system configuration • Enclosure RatingIEC IP20 Operating ConditionsTemperature:0° to +50° C Relative humidity:95% max. (non-condensing)
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