Model OB-ITF Infrared Through-Beam Fiber Optic Optical Barrier Operator s Manual. Version

Transcription

1 Model OB-ITF Infrared Through-Beam Fiber Optic Optical Barrier Operator s Manual Version

2 Contents 1. Introduction Description Model Nomenclature Operating Principle Specifications Location Sensor Location Sensor Mounting Sensor Aiming Utility Connections Electrical Connections Plumbing Connection Air Purge Connection Operation Controls Debugging Maintenance Regular Maintenance Returns of the OB-ITF Laser Safety Enclosure Dimensions P a g e 1

3 1. Introduction The Logika Technologies infrared laser optical barrier, Model OB-ITF, is designed for automation of steel, aluminum, and other metal mill production lines. With its high-output LED laser, the OB-ITF is well suited to detect billets and slabs in reheat furnaces. It exhibits strong antijamming in high radiation environments and performs well around fog, dust and water. The OB-ITF is specially designed for harsh conditions in heavy industrial environments. The IP66 rugged enclosure protects state-of the-art electronics which allows the sensor to withstand these conditions. The fiber allows the electronics to be positioned away from the worst of the heat from the furnaces. Applications include continuous casting, Slab Yard and transportation chain. 2. Description 2.1 Model Nomenclature Record your OB-ITF s complete Model Number here: OB-ITF- - Base Model OB-ITF Infrared Through-Beam Fiber Optical Barrier Power Input 24: 24VDC 110: 110VAC 220: 220VAC P a g e 2

4 2.2 Specifications Power Input 24 VDC, 110VAC, 220VAC 14W (No load) Output Relay 5A, Choice of PNP or NPN S type 100mA, short circuit protected Response Dry Contact: 100 ms, Level: 15ms Operating temp Electronic: -25 C to +70 C (-32 F to +160 F). Detect distance Target object Emitter Source Anti-Jamming Cable: Housing Size Weight Fiber Cables (Distance between Emitter and Receiver) 50m Opaque object larger than φ70mm 905nm infrared semi-conductor laser Peak output 30 mw, Class IIIb 1000 lux Insulation 20MΩ, 500VDC, 500 C (930 F) Hermetically sealed cast aluminum enclosure rated IP65, includes cooling water connections. Enclosures each: 170 mm L x 120 mm D x 70 mm H (6.75 x 4.75 x 2.75 ) 2.5kg Model OB-ITF-4, length 2m P a g e 3

5 2.3 Operating Principle The OB-ITF uses a high powered modulated infrared laser as light source. The laser is transmitted through a fiber optic cable and lens, across the furnace and is picked up by a matching lens and fiber. It is then sent to the Receiver where it is converted to an electrical signal. This signal is filtered, amplified and passed through a threshold. If the level is too low or completely absent, the Detect output is set. Figure 2.2: OB-ITF detection system P a g e 4

6 3. Location 3.1 Sensor Location The Logika OB-ITF should be installed with the lenses on the same light axis, i.e. pointing directly towards each other, with nothing blocking the light path except target objects. Maximum ambient temperature at the OB-ITF is 70 o C (160 o F). The installation of OB-ITF requires the Emitter and Receiver to be installed on either side of the target area. It is recommended that the maximum distance between the two be 50m. 3.2 Sensor Mounting The Logika OB-ITF Optical Barrier has been designed to have the electronic Emitter and Receiver units mounted in separate junction boxes, the lens assemblies mounted near the target object and the two connected with shielded fiber optic cable. See Figure 2.2 The Lens Mounting Plates are slotted to allow about 30 motion in both the horizontal and vertical planes. This is to provide sufficient motion to align Emitter and Receiver on the same light axis. 3.3 Sensor Aiming To aid in aligning the Emitter and Receiver, the Receiver has a series of Signal Strength LEDs. The better the alignment, the more LEDs will illuminate. Also, a visible laser alignment tool may be used to allow the technician to see where the Emitter is pointing, fine tuning the alignment later using the indicating LEDs. Note that the lens units are provided with slotted plates, one each for the Emitter and Receiver. These change the beam from a circle to a bar, allowing finer resolution of the target object s position. The slotted plates should be mounted in the same orientation. P a g e 5

7 4. Utility Connections 4.1 Electrical Connections Electrical Overview- All electrical connections (power and signal) to the OB-ITF are made via a 12-pin connector with ground. The sensor is supplied with a mating connector at the back of its enclosure and a standard 2-meter cable with the quick-connect assembly mating to the sensor and bare wire terminals for the junction box connections. Other cable lengths are available from Logika Technologies upon request. Cable Specification Outer steel braid for mechanical protection. Overall diameter of 9 mm. Minimum bending radius of 30 mm. Each lead is color-coded and numerically tagged. Leads terminated with ferrules Junction Box Wiring- Please see the Cable Terminal Wiring Description Figure 4.1 below for the sensor wiring terminal description. The supplied cable should be connected directly to the terminals of a junction box. All cables must be shielded all the way to the junction box with the shield connected to ground to eliminate electrical noise, which may trigger false detection. Any unused output wires must have insulation protection or be connected to a free terminal of junction box. Power Connections- Power Input (please specify power input at time of order). Wiring Emitter: Plug: PT06J14-12SS, Socket: PT02E-14-12P Brown(1)K Red(2)M +24VDC 0V 110VAC Neutral 220VAC Neutral Receiver Plug: PT06J14, Socket:PT02E-14-12P P a g e 6

8 BRN(1) RED(2) ORG(3) YEL(4) GRN(5) BLU(6) PURP(7) GRY(8) WHT(9) Pink(10) K M A B G J C D E F +24VDC 0V +24VDC 110VAC Neut Out 0VDC Out Ground PNP/NPN Hi=Detec t Self test Relay NO. Relay Common Relay NC 220VAC Neut Figure 4.1 Cable Terminal Wiring Description 4.2 Plumbing Connection Description- There is no cooling water connection to this instrument. 4.3 Air Purge Connection There are no air purge connections to this instrument. P a g e 7

9 5. Operation 5.1 Controls Emitter: 6 Green LEDs: Light strength indication Figure 5.1: Interface LEDs of OB-ITF Emitter If all the connections are good and installed properly, all 6 Green LEDs will be ON. Green POWER LED: Power indication Yellow NORMAL LED: Signal warning If less than 3 Green signal LEDs are ON, then the yellow LED will turn on. This may indicate that the fiber is not well connected or there is a malfunction of the emitter. P a g e 8

10 Receiver: Figure 5.2: Interface LEDs of OB-ITF Receiver 8 Green LEDs: Light strength indication Green LED: Power: ON indication Yellow LED: Normal: Signal Strength OK (Always On) Red LED: Detect Indication (Off = Detect) Aim the unit to make 4 or more Green Signal LEDs turn ON. If there are less than 4 LEDs ON, check the alignment of both Emitter and Receiver Lenses. P a g e 9

11 5.2 Debugging LED STATUS CAUSE CHECK Green (Emitter) Power Yellow (Emitter) Signal strength alarm 6 Green LEDs (Emitter) Emitter signal strength 8Green LEDs (Receiver) Receiver signal strength Green (Receiver) Power Yellow(Receiver) Signal strength alarm Red(Receiver) Detect light Stable Power Supply is stable Unstable Power Supply is not stable Power supply OFF No Power Power supply ON Signal strength OK Flashing Signal too weak Power supply All ON Emitter signal strong Parts ON Emitter signal weak Power supply OFF Emitter signal very weak Power supply All ON Signal Strength OK Parts ON Signal Strength Borderline OFF Not enough signal received Adjust, clean lens Stable Power Supply is stable Unstable Power Supply is not stable Power supply OFF No Power Power supply ON Signal strength OK OFF No signal received Power supply ON Beam blocked or target acquired OFF Beam received The wires which are not used must be insulated or connected to free terminals of a junction box, otherwise the sensor may fail. P a g e 10

12 6. Maintenance 6.1 Regular Maintenance Regular attention to the following will ensure steady operation of the sensor: Routinely check the OB-ITF Emitter and Receiver lens glass for dust or oil residue. When necessary, clean with alcohol and lens paper or soft cloth. Check and retighten lens mounts on a monthly basis, being careful not to affect the alignment of the two lenses. 6.2 Returns of the OB-ITF- Contact us at ( LOGIKA ) with the Serial Number of your sensor before you return the product. If we are unable to solve the problem by phone or , we will then provide you with a return authorization number. Do not return the OB-ITF without an authorization number. If the product is out of warranty, we will provide a repair estimate and then complete the repairs after your approval. P a g e 11

13 7. Laser Safety 1. The six green LEDs in a row across the top of the Emitter s Indication Window show when the laser is on and its relative strength. 2. Do NOT look into or touch the laser emitting source. 3. Take precautions to keep any shiny reflective object well away from the laser beam. 4. Do NOT allow this laser to shine onto a human body. Ensure that there is no danger of human exposure in the area where it is set up. 5. Operate only according to Class IIIb laser safety regulations.. P a g e 12

14 8. Enclosure Dimensions P a g e 13