Customization: | Available |
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Task: | Adjust |
Structure: | Combination |
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<1>. NPEXA-G511 safety barrier transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to safe area, with the relay output or open collector output, free choice to acting or reacting function.
<2>. The input, output, and power supply, 3 terminals are galvanically isolated from each other.
<3>. It has signal fault self-diagnosis function, and has the advantages of high reliability, quick response and so on. It can be used with all kinds of instruments, DCS and PLC.
Explosive-proof grade: [Ex ia Ga]IIC |
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Input |
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Permissible input signal from hazardous area |
Mechanical contacts or NAMUR proximity switch |
Switching trigger point | Input signal>2.1mA, it is"ON" Input signal<1.2mA, it is"OFF" |
Input resistance | 1KΩ |
Output | |
Output signal to safe area | Relay contact (Default open) |
Relay contact loading (Resistive) |
2A/250VAC, 2A/30VDC |
Other Parameters | |
Short-circuit current | Approx. 8.5mA |
Open-circuit voltage | Approx. 8.5V |
Line fault detection (LFD) | Input current≤80μA, Breakage,output relay opens; Input current≥6mA, Short-circuit,output relay opens; |
Energized/de-energized delay | < 20ms |
Mechanical life | > 10^5 switching cycles |
Switching frequency | < 10Hz |
Full load power consumption | ≤ 1.0W |
Power supply | 18V DC~32V DC (Recommended voltage: 24V DC) |
Dielectric strength: (1mA leakage current, 1 minute test time) |
≥3000V AC (between Intrinsically safe and Non intrinsically safe); ≥1500V AC (between Non intrinsically safe and Non intrinsically safe); |
Insulation resistance | ≥100MΩ (between input-ouput-power) |
EMC | IEC61326-3 |
Ambient Conditions |
Operating temperature range: -20~+60ºC |
Relative humidity: 10%~90%RH (40ºC) | |
Operating atmosphere pressure: 80~106kPa | |
Storage and delivery temperature: -40~+80ºC |
Parameters certified by China National Quality Supervision and Test Centre for Explosion Protected Electrical Products (CQST)
Um =250V AC/DC; Between terminal 1 & 2; Uo=10.5V, Io=11.3mA, Po=29.7mW
IIC | IIB | IIA | |
Co | 0.97μF | 11μF | 52μF |
Lo | 100mH | 300mH | 700mH |