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Technical specifications for SNAP-AIV-8
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Manufacturer:Opto 22
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Product Category:PLC Systems
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Spare Part Number:SNAP-AIV-8
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Weight:0.1 kg
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Tariff Code:8537101190
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Product type:Analog voltage input module
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Input channels:8
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Channel range:±10 VDC or ±5 VDC, individually selected
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Over-range limits:±11 V / ±5.5 V for ±10 V / ±5 V ranges
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Resolution:0.4 mV at ±10 V; 0.2 mV at ±5 V
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Input filtering:-3 dB at 64 Hz
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Maximum data freshness:0.28 s
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Input resistance:1 MΩ; common reference
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Accuracy:0.05%; 5 mV at 10 VDC / 2.5 mV at 5 VDC
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Module isolation:1500 V; no channel-to-channel isolation
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Maximum common-mode voltage:250 V operating
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Maximum survivable input:220 VAC or 300 VDC; not a measuring range
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Power requirement:5 VDC ±0.15 V, 170 mA
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Operating temperature:-20 to +70 °C
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Storage temperature:-40 to +85 °C
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Humidity:5–95%, non-condensing
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Hold-down screw torque:Maximum 0.11 N·m
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Connector screw torque:0.19 N·m
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- Opto 22 SNAP-AIV-8 acquires multiple voltage signals in a SNAP PAC I/O system, with channel range selection and a common reference connection.
Input channels: Eight analog voltage inputs
Selectable ranges: ±10 VDC or ±5 VDC per channel
Reference arrangement: Common reference across all eight channels
Selectable ranges: ±10 VDC or ±5 VDC per channel
Reference arrangement: Common reference across all eight channels
SNAP-AIV-8 provides eight analog voltage inputs, each configurable for -10 to +10 VDC or -5 to +5 VDC. The corresponding over-range limits are ±11 V and ±5.5 V, while resolution is 0.4 mV on the ±10 V range and 0.2 mV on the ±5 V range. Its -3 dB input-filter point is 64 Hz and maximum data freshness is 0.28 seconds. These characteristics describe voltage measurement performance, not a high-speed event capture function.
All channels share the same reference point, with a 1 MΩ input resistance. The even-numbered terminals on both connectors are internally connected, so separate signal returns must be electrically compatible before wiring. Module isolation is rated at 1500 V; this does not provide isolation between individual channels. Maximum operating common-mode voltage is 250 V. The 220 VAC or 300 VDC maximum survivable input is a protection limit, not the configured measurement range.
SNAP-AIV-8 is used with SNAP PAC brains and rack-mounted controllers. The module requires 5 VDC ±0.15 V at 170 mA and supports operation from -20 to +70 °C, storage from -40 to +85 °C, and 5–95% non-condensing humidity. Accuracy is 0.05%, expressed as 5 mV at 10 VDC or 2.5 mV at 5 VDC. Apply the specified hold-down torque limit of 0.11 N·m and connector screw torque of 0.19 N·m when installing the module and field wiring.
All channels share the same reference point, with a 1 MΩ input resistance. The even-numbered terminals on both connectors are internally connected, so separate signal returns must be electrically compatible before wiring. Module isolation is rated at 1500 V; this does not provide isolation between individual channels. Maximum operating common-mode voltage is 250 V. The 220 VAC or 300 VDC maximum survivable input is a protection limit, not the configured measurement range.
SNAP-AIV-8 is used with SNAP PAC brains and rack-mounted controllers. The module requires 5 VDC ±0.15 V at 170 mA and supports operation from -20 to +70 °C, storage from -40 to +85 °C, and 5–95% non-condensing humidity. Accuracy is 0.05%, expressed as 5 mV at 10 VDC or 2.5 mV at 5 VDC. Apply the specified hold-down torque limit of 0.11 N·m and connector screw torque of 0.19 N·m when installing the module and field wiring.
Controller platform reference: SNAP PAC analog input system. Use compatible processors and shared-reference wiring.
Technical downloads for Opto 22 SNAP-AIV-8: Apter Power technical and installation-planning summaries based on the applicable manufacturer references.
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Opto 22 SNAP-AIV-8 technical reference
Prepared by Apter Power - PDF, 5 pages, 26.4 KB. Technical summary of verified SNAP PAC I/O design functions and applicable configuration boundaries. -
Opto 22 SNAP-AIV-8 installation planning guide
Prepared by Apter Power - PDF, 5 pages, 25.5 KB. Installation planning, system integration and controlled acceptance checks.
Both files are Apter Power summaries, not manufacturer-issued manuals. Apply the original manufacturer procedures and approved site controls during work.
System and supply context: SNAP-AIV-8 has eight shared-reference voltage channels. SNAP PAC brain or rack-mounted controller compatibility is required; channel-to-channel isolation is not provided. Accessories are included only when itemized in the quotation.
Platform applications: The following applications describe SNAP PAC I/O functions. Match the complete SNAP-AIV-8 identity to the installed system before selecting a replacement.
Platform applications: The following applications describe SNAP PAC I/O functions. Match the complete SNAP-AIV-8 identity to the installed system before selecting a replacement.
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Multi-channel voltage acquisition
Acquire eight voltage signals with individual ±10 VDC or ±5 VDC range selection. Match each configured range to its connected source. -
SNAP PAC rack integration
Use the module with a SNAP PAC brain or rack-mounted controller and the appropriate SNAP rack. Include its 170 mA requirement in the 5 V supply budget. -
Shared-reference instrumentation
Connect compatible signal returns to the common reference. Channels do not provide independent isolation, so source grounding must be reviewed as one electrical arrangement. -
Process signal monitoring
Use the 64 Hz input filtering and 0.28-second maximum data freshness when evaluating measurement response. Confirm that these characteristics suit the control task.
Prepare SNAP-AIV-8 against the installed configuration and applicable Opto 22 instructions. Plan isolation and the resulting interruption of system operation before replacement.
Select the correct range
Configure every channel for its actual ±10 VDC or ±5 VDC signal before checking readings. The over-range and survivable-input values do not extend the normal measurement range.
Review common returns
All eight channels share a reference, including even-numbered terminals on both connectors. Avoid connecting incompatible grounded sources to the same module.
Check processor compatibility
Use a SNAP PAC brain or rack-mounted controller. Do not assume compatibility with an older SNAP processor merely because the module fits a rack.
Plan rack power
Provide 5 VDC ±0.15 V and allow 170 mA for this module. Verify the total installed rack load before energizing the system.
Use the specified torque
Keep module hold-down torque at or below 0.11 N·m and tighten connector screws to 0.19 N·m. Support and identify field wiring before replacement.
Verify measurements before release
With the installation safe and complete, confirm channel assignments, ranges, polarity and representative readings. Operate within -20 to +70 °C and non-condensing humidity conditions.
Alternative Names
SNAP-AIV-8
Opto 22 SNAP-AIV-8
Technical notes
Installation relationship: All channels share the same reference point, with a 1 MΩ input resistance. The even-numbered terminals on both connectors are internally connected, so separate signal returns must be electrically compatible before wiring. Module isolation is rated at 1500 V; this does not provide isolation between individual channels. Maximum operating common-mode voltage is 250 V. The 220 VAC or 300 VDC maximum survivable input is a protection limit, not the configured measurement range.
Configuration: SNAP-AIV-8 has eight shared-reference voltage channels. SNAP PAC brain or rack-mounted controller compatibility is required; channel-to-channel isolation is not provided.
Technical reference: Opto 22 SNAP Analog Input Modules Data Sheet, Form 1065-240702.
FAQ View All FAQ
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How many inputs does SNAP-AIV-8 provide?It provides eight analog voltage inputs. Every channel can be configured for -10 to +10 VDC or -5 to +5 VDC.
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Are SNAP-AIV-8 input channels isolated from each other?No. All eight channels share a common reference. The 1500 V module isolation rating does not imply channel-to-channel isolation.
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What resolution does SNAP-AIV-8 provide?Resolution is 0.4 mV on the ±10 V range and 0.2 mV on the ±5 V range.
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Which processors support SNAP-AIV-8?The module is intended for SNAP PAC brains and rack-mounted controllers. Verify the actual rack and processor configuration before installing it.
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What are the SNAP-AIV-8 update and filter characteristics?Maximum data freshness is 0.28 seconds and the input-filter point is -3 dB at 64 Hz. These are separate characteristics and should not be treated as the same response specification.
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What power does SNAP-AIV-8 require?It requires 5 VDC ±0.15 V at 170 mA. Include this load in the complete rack power budget.
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What temperature limits apply to SNAP-AIV-8?Operating temperature is -20 to +70 °C, while storage temperature is -40 to +85 °C. Relative humidity is 5–95%, non-condensing.
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Which screw torques apply to SNAP-AIV-8?The hold-down screws must not exceed 0.11 N·m. Connector screws are specified at 0.19 N·m.
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