The NEW PR Electronics Universal Trip Amplifier
Part Number : 4179B
Measures AC current and voltage signals
Output: 2 relays
Programming, process monitoring and diagnostics via PR 4500
Universal power supply 21.6…253 VAC / 19.2...300 VDC
Functional highlights
The 0... 5 AAC RMS range makes it possible to accurately measure a typical current transformer.
The 0...300 VAC RMS range allows accurate supply voltage monitoring.
The device measures standard input ranges and can be freely configured to customer-defined input range.
Process control with 2 pairs of potential-free relay contacts which can be configured to suit any application.
Trip amplifier with window function allowing the relay to change state within a high and a low setpoint on the input span.
Simulation of process value during commissioning / maintenance.
All terminals are over-voltage protected, polarity protected and short-circuit protected.
The 4179B provides the required failure data (SFF and PFDAVG) for SIL 2 applications as per IEC 61508 / IEC 61511.
Failure rates for 4179B correspond to Performance Level “d” according to ISO-13849.
Technical characteristics
Accuracy < 0.3% of span.
Temperature coefficient 0.01% / °C.
Response time < 0.75 s for measuring AC current / voltage signals.
High galvanic isolation of 2.3 kVAC.
Extended EMC immunity: NAMUR NE21, A criterion, burst.
Functional safety: HW assessment, SFF > 90%.
Programming
Configuration, monitoring and diagnostics using PR 4500 detachable communication interfaces. Product-specific functionality includes communication via Modbus and Bluetooth using our PR Process Supervisor (PPS) application, available for iOS and Android.
All programming can be password protected.
Scrolling help text in 7 languages.
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