Description
The ICS Triplex T7420A is a high-integrity analog input module designed for industrial automation systems requiring fault-tolerant performance and precise signal acquisition. It supports both differential and single-ended inputs with robust noise immunity.
Specifications
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Model: T7420A
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Input Channels: 16 single-ended or 8 differential
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Resolution: 12-bit analog-to-digital conversion (1 part in 4096)
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Input Range: Jumper-selectable
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Sample Rate: 1.8 ms (differential), 3.6 ms (single-ended)
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Isolation: 2500 V between analog and digital circuits
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Voltage/Current Interface: External 250-ohm resistors for current-to-voltage conversion
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Certification: TÜV certified, Risk Class 5
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Hot Swap Capability: Yes
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Redundancy Support: Operates in parallel with redundant modules
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Indicators: Front panel LEDs for module active and fault status
Features
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60 Hz Rejection: Enhanced noise immunity for stable signal acquisition
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Fault Tolerance: Triple-module configuration allows uninterrupted operation during module replacement
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Safetybus Voting Logic: Prevents upstream failures from affecting module performance
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Optical Isolation: Protects logic circuits from field signal transients
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Fast Response Option: T7420AF variant available for low noise immunity applications
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RAM Storage: Digital values stored internally for rapid access
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Diagnostic Capabilities: Extensive fault detection and annunciation
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