897H-G231

Hazardous Location & Pneumatic Switches Galvanic Isolator Specifications Standards EN50020-EN50039, FM3610, CSA22.2 No.157, UL913 Approvals FM, CSA, UL, CENELEC (PTB) approved and CE marked for all applicable directives Power Supply 32mA @ 18-35V DC Number of Inputs 2 Signal Range 8V @ 8.2mA Input Switching Current On > 2.1mA Off < 1.2mA Input Resistance 1000 ohms Isolation Protection 1500V Output 2 x SPST Output Contact Rating 2A/250V AC, 2A/120V AC, 2A/24V DC Switching Frequency 15Hz Switch Delay On to Off 15ms Off to On 15ms Indication LEDs Green = Power Yellow = Output Closed Red = Wire Break/Short Operating Temperature -20°C to +65°C (-4°F to +149°F) Humidity 95% RH Housing Material Polyamide 6GF Enclosure Protection IP30 Mounting 35mm Din rail Conductor Size 0.2-2.5mm2 (24-14AWG) Weight Mechanical Contact Life 120g (0.26lbs) 20,000,000 cycles APPROVED Description The galvanic isolators are active protective interface assemblies to isolate intrinsically safe circuits from non intrinsically safe circuits to worldwide standards. Galvanic isolators offer economical solutions for instrumentation and control systems in hazardous locations. Unlike zener diode barriers, galvanic isolators do not require grounding. Allen-Bradley’s galvanic isolators provide 1500 volt isolation between hazardous area and non hazardous area terminals and 500 volt isolation between input/output and external power terminals. DIP switches provide convenient programming for output or diagnostic functions. Multiple LEDs allow easy visual indication of module and circuit status. Wiring for intrinsically safe systems must be identified as such through the use of light blue jacketing and/or through appropriate labels. Such labels are required by NEC Article 504 and ANSI/ISA RP-12.6 to be placed at no more than 25 foot intervals. When installing intrinsically safe equipment the user should refer to all relevant national standards and/or those standards set forth by the “authority having jurisdiction” at the installation site. Entity Table Groups A, B C, D, E,F, G Voc 10.6V Isc 29.7mA Ca 2.5uF 15uF La 40mH 150mH Features • • • • • • Galvanic isolation input-to-output Reverse polarity protected 500V isolation between input and output No separate intrinsically safe grounding required 18mm (0.71in) wide housing 35mm Din rail mount 16-6 Hazardous Location & Pneumatic Switches Galvanic Isolator Product Selection Product Galvanic Isolator External Power 32mA @ 18-35VDC Output type SPST 2A @ 250V AC Catalog Number 897H-G231 Approximate Dimensions—mm (inches) Block Diagram 18 (0.71) 114 (4.5) +7 9 8 1 5 2 3 80 (3.15) DIP Switch Settings 1234 1111 Typical Wiring Diagrams Hazardous Location U.S. Class I, II, III, Div 1, 2 European Zone 0, 1, 2, EExia IIB See Entity Parameters for 897H for Groups Bulletin 800E Latching E-stop Galvanic Isolator 897H-G231 L+ Stop Non hazardous Location 24V DC K1 (Aux) Start K2 (Aux) L1 L2 L3 Reset 440K Tongue Interlock 1 5 2 3 A1 Input 13 23 33 MC 7 9 8 6.8K Resistors 1492-WD4RA682 Open DIP Switch Settings 1234 1 1 1 1 LMinotaur Dual Channel Safety Relay K1 K2 A2 Input 14 24 34 MC Safety Gate K1 K1 Ground M 440F MatGuard Pressure Sensitive Safety Mat 7 9 6.8K Resistor 1492-WD4RA682 440F GuardEdge Pressure Sensitive Sensing Edge 7 9 8 8 16-7