PDF《PICO-GUARD》

14 4. System Operation Page

19 4.1 Periodic Checkout Requirements

19 4.2 System Configuration Settings

19 4.3 Resetting the Controller

20 4.4 Status Indicators.20 4.5 Normal Operation

20 4.6 Remote Interface.25 5. Troubleshooting and Maintenance.Page

29 5.1 Troubleshooting Lockout Conditions

29 5.2 Electrical and Optical Noise.29 5.3 Troubleshooting Weak Signal (Low Excess Gain) Conditions

32 5.4 Servicing and Maintenance.32 6. Periodic Checkout Procedures Page

33 6.1 Schedule of Checkouts

33 6.2 Trip Test

33 6.3 Commissioning Checkout

33 6.4 Daily Checkout Procedure.35 6.5 Semi-Annual Checkout Procedure

35 U.S. Standards Applicable to Use of PICO-GUARD Systems ANSI B11 Standards Safeguarding of Machine Tools ANSI/RIA R15.06 Safety Requirements for Robot Systems NFPA

79 Electrical Standard for Industrial Machinery See inside back cover for information on these and other applicable standards, and where to acquire copies. P/N

69761 rev. B

1 Banner Engineering Corp. ? Minneapolis, U.S.A. www.bannerengineering.com ? Tel: 763.544.3164 PICO-GUARD Controller Instruction Manual Figure 1-1. PICO-GUARD System Overview 1. System Overview 1.1 Description The Banner PICO-GUARD fiber optic safety system is a diverse-redundant microprocessor-controlled optoelectronic guarding system. This system consists of a controller, flexible optical fiber, protective sheathing and optical elements (fiber optic interlock switches, beams and grids). The system can be used with various combinations of optical elements using the four independent optical channels. The controller also has electrical Universal Safety Stop Interface (USSI) inputs that can connect to other safeguards, E-stop devices, process controls or actuators. Regardless of the combination of optical elements and external safeguards used, when the system detects an interruption of an optical path or receives a safety stop request, it will provide a stop signal to the machine control circuit. The machine control circuit then reacts to protect personnel from hazards, or to protect equipment, critical tooling, or critical materials in process. The controller has two solid-state diverse-redundant safety outputs (OSSDs) to control 24V dc loads. If an ac-powered MPCE or other load is required, an accessory interface module or redundant positive-guided contactors may be used to convert the PICO-GUARD outputs to isolated, forced-guided relay contacts (e.g., model IM-T-9A or IM-T-11A, see Section 2.3 for more information.) The OSSD (Output Signal Switching Device) safety outputs are capable of performing a handshake communication with the Muteable Safety Stop Interface (MSSI) or Universal Safety Stop Interface (USSI) found on other Banner Engineering safety products. The handshake protocol is satisfied by any Banner Engineering Safety Category

4 (per ISO 13849-1/ EN954-1) device with OSSD outputs or MSSI/USSI inputs. This handshake verifies that the interface between the two devices is capable of detecting certain unsafe failures that may occur (such as a short circuit to a secondary source of power or to the other channel, high input resistance or loss of signal ground). Additional Safety Stop Device Inputs for: ? E-stop switches ? Safety mat controllers ? Rope pull switches ? Other safety modules ? Magnetic safety switch controllers ? Additional PICO-GUARD controllers System Overview

2 P/N

69761 rev. B Banner Engineering Corp. ? Minneapolis, U.S.A. www.bannerengineering.com ? Tel: 763.544.3164 PICO-GUARD Controller Instruction Manual Generally, use of the Banner PICO-GUARD System is not allowed: ? On machinery that has inadequate or inconsistent machine response time and stopping performance, or ? On machinery with long or excessive stopping times without a guard-locking mechanism, or ? To guard any machine that ejects materials or component parts in such a manner that the material or component parts are not contained and are considered to be a hazard, or ? In any environment that is likely to adversely affect photoelectric sensing system efficiency. For example, corrosive chemicals or fluids or unusually severe levels of smoke or dust, if not controlled, may degrade the efficiency or effectiveness of the safeguarding function. The PICO-GUARD Controller and any electrically based device(s) connected to the PICO-GUARD controller must be mounted and used outside of the potentially explosive area or within appropriate explosion-proof enclosures. Approvals are pending. See www.bannerengineering.com for further information. System Overview The optical elements (such as fiber optic safety interlock switches, points or grids) are available in a variety of configurations to allow easy installation and proper operation on a variety of doors and other hard guarding applications. Each optical element can be used as either an emitter or a receiver;