Accurate signal acquisition
Acquire 8 industrial current or voltage signals through single-ended analog input channels in one compact module.
BL335
N Series Distributed I/O
Measure. Convert.
Monitor.
N3081/N3083 provide 8 single-ended analog input channels. Select N3081 for 0–20 mA / 4–20 mA current signals or N3083 for 0–5 V / 0–10 V voltage signals.
Each model delivers 16-bit resolution, ±0.1% FSR accuracy at 25°C, and a 300 ms sampling period.
8Analog input channels
16 BitSignal resolution
±0.1%FSR accuracy at 25°C
300 msSampling period
N3081 current input0–20 mA / 4–20 mA, 4-wire signals.
N3083 voltage input0–5 V / 0–10 V, 4-wire signals.
DIN-35 mountBuilt for distributed industrial I/O systems.
Technical specifications
N3081/N3083 technical specifications.
Analog input ranges, resolution, accuracy, sampling performance, wiring requirements, environmental ratings, dimensions, terminal assignment, and N-Series system compatibility.
8Analog input channels
16 BitSignal resolution
±0.1%FSR accuracy at 25°C
DIN-35Industrial rail installation
N3081 vs. N3083
N3081 acquires industrial current signals, while N3083 acquires industrial voltage signals. Both models use the same 8-channel, single-ended, 16-bit platform.
| Selection point | N3081 | N3083 |
|---|---|---|
| Signal type | Current input | Voltage input |
| Input range | 0–20 mA / 4–20 mA | 0–5 V / 0–10 V |
| Input method | Single-ended, 4-wire | Single-ended, 4-wire |
| Resolution | 16 Bit | 16 Bit |
| Sampling period | 300 ms | 300 ms |
Electrical specifications
Analog input, conversion, sampling, and indication data for N3081 and N3083.
01
ModelsN3081 current input / N3083 voltage input
Analog input channels8 channels, AI1 to AI8
Input methodSingle-ended input
N3081 input range0–20 mA / 4–20 mA, 4-wire
N3083 input range0–5 V / 0–10 V, 4-wire
Resolution16 Bit
Accuracy±0.1% FSR at 25°C
Sampling period300 ms
Input impedance249 Ω
Internal bus power5 VDC, 96 mA at 5 VDC
Power indicationLeft P: 24 V power; right P: 3.3 V power; red LED on means normal
Channel indicationPanel positions 1 to 16 are reserved
Wiring and installation
Connection and mounting data for panel integration.
02
Terminal designSpring-cage terminals; one conductor per spring terminal
Supported conductor typesSolid, stranded, and fine-stranded wire
Multiple-conductor ruleJoin multiple conductors at one point before connection
Wire size0.3 to 2.5 mm² / AWG 22 to 14
Recommended stripping length8 to 9 mm / 0.33 in
Cable requirementUse shielded cable
Terminal assignmentA1/B1 AI1/GND; A2/B2 AI2/GND; A3/B3 AI3/GND; A4/B4 AI4/GND; A5/B5 AI5/GND; A6/B6 AI6/GND; A7/B7 AI7/GND; A8/B8 AI8/GND; A9/B9 PE/PE
InstallationIEC 60715 DIN-35 rail mounting
Environmental performance
Operating limits and industrial protection information.
03
Operating temperature-20°C to 55°C
Storage temperature-40°C to 70°C
Relative humidity5% to 95%, non-condensing
Operating altitude0 to 2,000 m
Protection ratingIP20
EMC protectionIEC 61000-4-2 (ESD) Level 2 and IEC 61000-4-5 (Surge) Level 2
Mechanical and system data
Physical dimensions and requirements for an N-Series station.
04
Dimensions15.4 × 104.6 × 74.9 mm
Weight71.2 g
Internal bus8 gold-plated data contacts; communication and system power are provided through the internal bus
Required couplerA suitable N-Series fieldbus coupler, such as a BL210 Series coupler
Station arrangementI/O modules may be combined in different sequences without grouping by module type
Installation sequenceInstall from the coupler left to right; align the module guides, press into position, lock the rail latch, and install an end cover on the final module
RemovalUnlock the rail latch with a flat-blade screwdriver and pull the module away from the DIN rail; data and power contact connections are then disconnected
16-bit conversion
Convert field signals into digital values with 16-bit resolution, ±0.1% FSR accuracy at 25°C, and a 300 ms sampling period.
Part of a platform
N3081/N3083 are optional modules for the N-Series distributed I/O system and must be used with a suitable fieldbus coupler, such as a BL210 Series coupler.
What makes N3081/N3083 different
8 analog inputs. 16-bit conversion. Current or voltage.
N3081/N3083 combine 8 single-ended analog input channels, selectable current or voltage model options, 16-bit resolution, ±0.1% FSR accuracy at 25°C, a 300 ms sampling period, spring-cage wiring, and industrial EMC protection.
8-channel acquisition
Collect AI1 to AI8 field signals in a compact 15.4 mm-wide module.
Current or voltage
Select N3081 for 0–20 mA / 4–20 mA signals or N3083 for 0–5 V / 0–10 V signals.
16-bit signal conversion
Convert analog input signals with 16-bit resolution, ±0.1% FSR accuracy at 25°C, and a 300 ms sampling period.
Industrial-grade design
IP20 protection, IEC 61000-4-2 and IEC 61000-4-5 Level 2 EMC protection, and -20°C to 55°C operation.
N3081/N3083 analog input
Choose current or voltage input.
N3081 provides 8-channel 0–20 mA / 4–20 mA current input. N3083 provides 8-channel 0–5 V / 0–10 V voltage input.
N3081 · Current Input
0–20 mA / 4–20 mA acquisition
Designed for 8 channels of single-ended, 4-wire industrial current input with 16-bit resolution and a 300 ms sampling period.
8Analog input channels
16 BitSignal resolution
0–20 / 4–20 mAInput signal range
AI1–AI8Single-ended inputs
Field sensorAnalog input module
Sensor
Current signal
N3081 · 0–20 mA / 4–20 mA input
Connection and installation
Terminal assignment and module installation.
Use the defined AI, GND, and PE terminals, select the correct signal model, and install the module on a compliant DIN-35 rail as part of the N-Series station.
Terminal assignment
A1 / B1 to A4 / B4AI1 / GND through AI4 / GND.
A5 / B5 to A8 / B8AI5 / GND through AI8 / GND.
A9 / B9PE / PE.
Signal selectionUse N3081 for current signals or N3083 for voltage signals; both use single-ended, 4-wire input.
Installation and internal bus
Rail and sequenceMount on an IEC 60715 DIN-35 rail and assemble modules from the coupler left to right.
Insert the moduleAlign the spring tongues with the groove, keep the rail latch unlocked, press the module into position, and lock the latch.
Data and power contactsEight gold-plated data contacts provide communication and system power through the internal bus.
End cover and removalInstall an end cover on the final module. To remove a module, lift the rail latch with a flat-blade screwdriver and pull it away from the rail.
Use shielded cable, one conductor per spring terminal, 0.3 to 2.5 mm² wire, and an 8 to 9 mm stripping length.
N-Series module family
More N-Series I/O module options.
The N-Series includes digital input, digital output, analog input, analog output, RTD, temperature, pulse, and power modules.
I/O modules can be arranged in different combinations within the distributed I/O station without grouping them by module type.
26 modules · 8 categories
6 modules
DI
Digital input options for NPN, PNP, and dry-contact sensing.
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N116116CH DI Module (Low-Level Trigger / NPN)
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N116216CH DI Module (High-Level Trigger / PNP)
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N116316CH DI Module (Dry Contact)
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N132132CH DI Module (Low-Level Trigger / NPN)
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N132232CH DI Module (High-Level Trigger / PNP)
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N132332CH DI Module (Dry Contact)
5 modules
DO
Digital and relay output options for discrete control.
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N20848CH Relay Output Module
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N216116CH DO Module (PNP / 24 VDC Active)
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N216216CH DO Module (NPN / 0 VDC Active)
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N232132CH DO Module (PNP)
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N232232CH DO Module (NPN)
3 modules
AI
Analog input options for current and voltage acquisition.
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N30464CH 16-bit AI Module, Differential Input, ±5V / ±10V
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N3081N30818CH 16-bit AI Module, Single-Ended Input, 0/4-20mA
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N3083N30838CH 16-bit AI Module, Single-Ended Input, 0-5V / 0-10V
2 modules
AO
Analog output options for current and voltage control.
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N40818CH 16-bit AO Module, 0/4-20mA Output
-
N40868CH 16-bit AO Module, ±5V / ±10V Output
4 modules
RTD
RTD modules for PT100 and PT1000 temperature sensing.
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N50414CH RTD Module, three-wire PT100
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N50424CH RTD Module, three-wire PT1000
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N50434CH RTD Module, four-wire PT100
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N50444CH RTD Module, four-wire PT1000
2 modules
Temperature
Dedicated temperature modules for NTC and thermocouple signals.
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N50858CH NTC Module
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N50888CH TC Module
3 modules
Pulse
Pulse counting and pulse-output control modules.
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N90813CH Pulse Counter + 5×DI
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N90826CH Pulse Output + 2×DO
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N90832CH Pulse Output (Pulse Count Control) + 4×DI + 2×DO
1 module
Power
Additional power support for larger N-Series stations.
-
N7021Power Module
Important system note
When the number of selected N-Series I/O boards exceeds 20, an additional power module is required. If the number is less than 20, no extra power module is needed.
Recommended users
Who should use the N3081/N3083 analog input modules?
N3081/N3083 fit distributed I/O installations that require compact, accurate acquisition of industrial current or voltage signals.
Maintenance teams
Use the power indicators, defined AI/GND terminals, and model-specific signal ranges to verify field wiring during commissioning and troubleshooting.
System integrators
Select N3081 for 0–20 mA / 4–20 mA transmitters or N3083 for 0–5 V / 0–10 V sensors.
OEM manufacturers
Standardize 8-channel, 16-bit analog acquisition for sensors, transmitters, monitoring instruments, and automation equipment.
Distributed I/O projects
Use N3081/N3083 with a suitable N-Series fieldbus coupler, such as a BL210 Series coupler.
