One-Touch Contact May
Module Overview
1. Type: Analog Output Module
2. Output Channels: 8 isolated channels
3. Output Range: 4–20 mA DC
4. Redundancy Architecture: Triple Modular Redundancy (TMR)
5. Primary Function: Converts digital control signals into high-precision analog outputs to drive actuators and field devices
Key Highlights:
1. Built-in real-time self-test and channel monitoring
2. Hot-swappable design for uninterrupted operation
3. High accuracy and low-noise output, suitable for SIL 3 systems
4. Stable operation in environments from 0°C to 60°C
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No.
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Part number
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Description
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Typical host rack
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Remarks
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1
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8311 / 8311N
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24 VDC → 3×TMR power module
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8110 / 8120 main
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Today’s focus
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2
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8110
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32-slot main chassis
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—
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Default left slot for 8311
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3
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8300A
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115 VAC/DC power module
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8110
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Alternative/redundant option to 8311
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4
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3008
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Main processor (TMR)
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8110
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Triple CPU
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5
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3503E
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24 VDC digital input 32-pt
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any I/O row
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SIL-3 DI card
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6
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3604E
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24 VDC digital output 16-pt
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any I/O row
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SIL-3 DO card
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7
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3703E
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Analog input 0-20 mA 16-pt
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any I/O row
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4–20 mA / HART
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8
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3805E
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Analog output 4-20 mA 16-pt
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any I/O row
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Redundant AO
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9
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4351B
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Communication module (CM)
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chassis rear
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RS-485 / Modbus
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10
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4508
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High-speed channel interface (HIM)
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rear
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SOE / speed monitor
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What happens next?
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Your quote
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