Intrinsic Safety Barrier This Intrinsic Safety Barrier Module is the perfect complement to BEI’s Intrinsically Safe Encoders and, when used together, constitutes a completely engineered solution for encoder operation in Class I and Class II, Division 1 (Zone 0) Hazardous Environments. This single barrier provides both power and signal isolation for an incremental encoder with differential quadrature outputs and an index. This all-in-one approach saves the cost, inconvenience and system design time needed when using separate power and signal barriers. This barrier is galvanically isolated which eliminates the added cost of maintaining a high integrity earth ground. With differential line driver outputs, this barrier can be used to carry signals reliably up to 500 feet with a bandwidth of up to 250 kHz. It is designed around a standard DIN Rail mounting (Type EN 50022, 35 mm X 7.5 mm) for easy installation in standard enclosures. A length This Intrinsic Safety Barrier has certifications of DIN rail is supplied with each module. The module simply to be used as an associated apparatus for snaps directly to the DIN rail and is ready to use. intrinsically safe encoders installed in the following hazardous locations: The Intrinsic Safety Barrier Module is certified to be installed in Class I, Div. 2 (Zone 2) areas. US Class I, Group A,B,C,D; Class II, Groups E,F,G; Class III When properly connected, differential data signals have an inherent immunity to noise since it is rejected as common mode. However if a connection between the encoder and the Canadian Class I, Zone 0, Group IIC barrier is broken or improperly terminated it can act as an antenna and still create a signal. An open wire detection (ISD) II 3 (1) G Ex nA [ia Ga] IIC T4 Gc option is available on BEI’s Intrinsically Safe Barriers (28V/V and 28V/5 only). In the event that the data line is cut or not properly connected the ISD option can detect a change in the Ex nA [ia Ga] IIC T4 Gc impedance of the connection and cause the output data on both legs of the differential signal to go low. This creates an erroneous logic state that can be used by the operator to halt or EN 55011 and 61000-6-2 modify a process. Intrinsic Safety Barrier Ordering Options for assistance, call 800.350.2727 Use this diagram, working from left to right to construct your model number (example: EM-DR1-IS-5-RTB-28V/V) EM DR1 IS 5 RTB TYPE: OUTPUT VOLTAGE TO EM = Electronic Module, DIN Rail ENCODER mount 5=5 VDC PACKAGE STYLE: OUTPUT TERMINATION: DR1 = 114.5 mm x 99mm x RTB = 22.5 mm RemoveTerminal FUNCTION Block IS= Intrinsically Safe ISD = Intrinsically Safe with Open Wire Detection (available VOLTAGE/OUTPUT: 28V/V = 12-28 VDC, Vout = Vin with 28V/V or 28V/5 supply 28V/5 = 12-28 VDC, Vout = 5 volts voltage/output) 28V/OC = 12-28 VDC, Vout = Open Coll. These commodities, technology or software if exported from the United States must be in accordance 7230 Hollister Avenue | Goleta, CA | 93117 Specification No.: 02125-004 with the Bureau of Industry, and Security, Export Administration regulations. Diversion contrary to U.S. Tel: 805.968.0782 / 800.960.2726 Rev 2-20-14 law is prohibited. www.beisensors.com Page 1/2 Intrinsic Safety Barrier Specifications POWER SUPPLY / OUTPUT TYPE Part Number Barrier Supply: Vs ±5% Output logic to Non-hazardous Area Apparatus Line Driver 60004-002 Vout = 5V up to 100 mA source/sink (TTL & RS422 compatible) Line Driver 60004-003 Vout = Vin up to 100 mA source/sink NPN Open 60004-004 Collector 12-28 VDC up to 80 mA sink Line Driver 60004-005 Vout = 5V up to 100 mA source/sink Open wire detect option Line Driver 60004-006 Vout = Vin up to 100 mA source/sink Open wire detect option Caution: Operation above or below barrier supply voltage (Vs) range noted will cause permanent damage to barrier ! BARRIER PARAMETERS Class I, Gp D Class I, Gps C,D Class I, Gps A,B,C,D Class II, Gps E,F,G Class II, Gps E,F,G Class II, Gps E,F,G Group IIA Group IIB Group IIC Barrier Output Voc (Uo) Isc (Io) Ca (Co) La (Lo) L/R Ratio Ca (Co) La (Lo) L/R Ratio Ca (Co) La (Lo) L/R Ratio (Po) 870 mW 9.48 VDC 367 mA 255 uF 2.1 mH 327 uH/Ω 27 uF 1.05 mH 160 uH/Ω 3.7 uF 0.26 mH 40.8 uH/Ω INPUT TO BARRIER FROM ENCODER Signals A, B, Z, A/, B/, Z/ differential or A,B,Z single-ended Input Signal Impedance 500 Ω nominal (A to A/, B to B/, Z to Z/) Input Signal level 4 VDC minimum, 6 VDC maximum General Wiring Diagram (See BEI Sensors drawing 08067-003 for important details) These commodities, technology or software if exported from the United States must be in accordance 7230 Hollister Avenue | Goleta, CA | 93117 Specification No.: 02125-004 with the Bureau of Industry, and Security, Export Administration regulations. Diversion contrary to U.S. Tel: 805.968.0782 / 800.960.2726 Rev 2-20-14 law is prohibited. www.beisensors.com Page 2/2