Zone 0
Explosive gas atmosphere present continuously or for long periods
Zone 1
Explosive gas atmosphere likely to occur in normal operation
Zone 2
Explosive gas atmosphere unlikely to occur and, if it does, only for a short period
# General
Product type: Ethernet-APL field switch
Brand: Pepperl+Fuchs
Series: FieldConnex Ethernet-APL Rail Field Switch ARS11 / ARS12
Versions: ARS11 (APL + PROFIBUS PA proxy), ARS12 (APL only)
Spur ports: 8, 16, 24
Ethernet ports: 2 x 1000BASE-T, 2 x SFP
PROFINET: Class B, MRP, S2 redundancy, dynamic reconfiguration
Configuration and diagnostics: FDI, web, PROFINET device functions, SNMP
Network security: SNMPv3, HTTPS, locking of unused ports
# Certifications
Switch installation: Zone 2
Spur ports: Ex ic (instruments in Zone 2) or Ex ia (instruments in Zone 0/1), to 2-WISE and FISCO
# Electrical
Power input: redundant, 20…60 V DC
# Mechanical
Spur terminals: screw or spring
ACC-ARS-SW separation wall: 50 mm clearance between non-intrinsically safe circuits and spur terminals, polycarbonate, pack of 2
ACC-PC-45 / ACC-PC-SFP covers: polycarbonate, pack of 10
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