Digital I O Module Allen Bradley Analog Input 1746-NI8 For Programmable Controller

 

 

1746 SLC I/O Modules

1746 SLC™ I/O Modules are part of our SLC 500 control platform.

 

General Input Specifications for 1746-NI8

Specification	1746-NI8
Backplane current (mA) @ 5V	200 mA
Backplane current (mA) @ 24V	100 mA
Backplane power consumption	3.4 W maximum (1.0 W @ 5V DC, 2.4 W @ 24V DC)
Number of inputs	8
Converter resolution	16-bit
Type of input (selectable)	±10V DC 0…5V DC 0…20 mA ±20 mA 1…5V DC 0…10V DC 4…20 mA 0…1 mA
Type of data (selectable)	Engineering Units Scaled for PID Proportional Counts (-32,768…32,767 range) Proportional Counts (User-Defined Range, Class 3 only) 1746-NI4 Data Format
A/D conversion method	Successive approximation, switched capacitor
Input filter frequencies	1 Hz 2 Hz 5 Hz 10 Hz 20 Hz 50 Hz 75 Hz
Time to detect open circuit	1 module scan
Common mode voltage range	±10.5V (15V maximum between any two input signal terminals when connected in a single-ended configuration)
Isolation voltage	Tested @ 500V AC and 710V DC for 60 s
Module update time	0.75 ms per enabled channel
Channel turn-on time, max	101…107 ms
Channel turn-off time, max	1…7 ms
Channel reconsideration time, max	101…107 ms
Calibration	Module performs continuous autocalibration

 

Current Loop Specifications for 1746-NI8

Attribute	Value
Current input, max	±30 mA
Input impedance	250 Ω
Input resolution	1 μA
Display resolution	1 μA
Overall module accuracy 0…60 °C (32…140 °F)	0…20 mA, 4…20 mA, ±20 mA: ±0.05% 0…1 mA: ±0.5%
Overall module accuracy drift	±12 ppm/°C
Gain error @ 25 °C (77 °F)	±0.025%, max
Gain error, 0…60 °C (32…140 °F)	±0.05%, max
Gain error drift	±12 ppm/°C
Overvoltage capability	7.5V AC RMS, max

 

Voltage Input Specifications for 1746-NI8

Attribute	Value
Voltage input, max	±30V between any two signal terminals
Input impedance	1M Ω
Input resolution	1 mV
Display resolution	1 mV
Overall module accuracy 0…60 °C (32…140 °F)	±0.1%
Overall module accuracy drift	±17 ppm/°C
Gain Error @ 25 °C (77 °F), max	±0.05%
Gain Error, 0…60 °C (32…140 °F), max	±0.1%
Gain error drift, max	±17 ppm/°C

 

 

1746 Digital I/O modules

 

Digital I/O modules are available with 4, 8, 16, or 32 channels and in a wide variety of I/O voltages (including AC, DC, and TTL). Combination modules with 2 inputs/2 outputs, 4 inputs/4 outputs, and 6 inputs/6 outputs are also available.

 

Terminals on the 4, 8, 12, and 16-channel modules have self-lifting pressure plates that accept two 14 AWG (2 mm2) wires. LED indicators on the front of each module display the status of each I/O point.

 

32-channel I/O modules are equipped with a 40-pin, MIL-C-83503 type header and a removable wiring connector (1746-N3). The connector can be assembled with the wire type and length of your choice.

 

Output modules are available with solid-state AC, solid-state DC, and relay contact type outputs. High current solid-state output modules, catalog numbers 1746-OBP16, 1746- OVP16, and 1746-OAP12, have fused commons with a blown fuse LED indication. The 1746-OB16E, 1746-OB6EI, and 1746-OB32E modules provide electronic protection from short circuit and overload conditions.

 

Wiring of 16 and 32-channel modules can also be accomplished with a bulletin 1492 interface module and pre-wired cable. All 16-channel I/O modules and catalog numbers 1746-OX8, 1746-OBP8, 1746-OAP12, 1746-IO12 are equipped with color-coded removable terminal blocks.

 

 

SLC 500 Common Specifications

 

Environmental Specifications

Attribute	Value
Temperature, operating	IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0…60 °C (32…140 °F)
Temperature, nonoperating	IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold), IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock): -40…85 °C (-40…185 °F)
Relative humidity	IEC 60068-2-30 (Test Db, Unpackaged Damp Heat): 5…95% without condensation

 

 

Environmental Specifications

Attribute	Value
Vibration, operating	IEC 60068-2-6 (Test Fc, Operating): 1 g @ 5…2000 Hz
Vibration, nonoperating	2.5 g @ 5…2000 Hz
Shock, operating	30 g (3 pulses, 11 ms) – for all modules except relay contact 10 g (3 pulses, 11 ms) – for relay contact modules 1746-OWx and 1746-IOx combo
Shock, nonoperating	50 g, 3 pulses, 11 ms
Free fall (drop test)	Portable, 2.268 kg (5 lb) or less @ 0.762 m (30 in.), six drops Portable, 2.268 kg (5 lb) or less @ 0.1016 m (4 in.), three flat drops
Isolation voltage	Korean Registration of Broadcasting and Communications Equipment, compliant with: Article 58-2 of Radio Waves Act, Clause 3

 

Certifications

Certifications when product is marked	Value
UL	UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations. See UL File E10314.
c-UL	UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for Canada. See UL File E10314.
CE	European Union 2004/108/EC EMC Directive, compliant with: EN 61000-6-2; Industrial Immunity EN 61000-6-4; Industrial Emissions EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)   European Union 2006/95/EC LVD, compliant with: EN 61131-2; Programmable Controllers (Clause 11)
C-Tick	Australian Radiocommunications Act, compliant with: AS/NZS CISPR 11; Industrial Emissions
KC	Korean Registration of Broadcasting and Communications Equipment, compliant with: Article 58-2 of Radio Waves Act, Clause 3

 

 

 

Digital I/O Module Overview

Catalog Number	Description	Voltage Category
1746-NI4	High Resolution (4) Analog Input Module	-20…+20 mA (or) -10…+10V DC
1746-NI8	High Resolution (8) Analog Input Module	-20…+20 mA (or) -10…+10V DC
1746-NI16I	High Resolution (16) Analog Input Module	-20…+20 mA
1746-NI16V	High Resolution (16) Analog Input Module	-10…+10V DC
1746-NIO4I	High Resolution (2) Analog Input, (2) Analog Current Output Module	-20…+20 mA (or) -10…+10V DC (inputs) 0…20 mA (outputs)
1746-NIO4V	High Resolution (2) Analog Input, (2) Analog Voltage Output Module	20…+20 mA (or) -10…+10V DC (inputs) -10…+10V DC (outputs)
1746-FIO4I	(2) Fast Analog Input, (2) Analog Current Output Module	0…20 mA (or) 0…10V DC (inputs) 0…20 mA (outputs)
1746-FIO4V	(2) Fast Analog Input, (2) Analog Voltage Output Module	0…20 mA
1746-NIO4I	(4) Analog Current Output Module	-10…+10V DC
1746-NIO4V	(4) Analog Voltage Output Module	0…20 mA
1746-NO8I	(8) Analog Current Output Module	-10…+10V DC
1746-NO8V	(8) Analog Voltage Output Module	-10…+10V DC

 

Catalog Number	Voltage Category	I/O Points	Description
DC Modules
1746-IB8	24V DC	8	Current Sinking DC Input Module
1746-IB16	24V DC	16	Current Sinking DC Input Module
1746-IB32	24V DC	32	Current Sinking DC Input Module
1746-ITB16	24V DC	16	Fast Response DC Sinking Input Module
1746-IC16	48V DC	16	Current Sinking DC Input Module
1746-IH16	125V DC	16	Current Sinking DC Input Module
1746-IV8	24V DC	8	Current Sourcing DC Input Module
1746-IV16	24V DC	16	Current Sourcing DC Input Module
1746-IV32	24V DC	32	Current Sourcing DC Input Module
1746-ITV16	24V DC	16	Fast Response DC Sourcing Input Module
1746-IG16	5V DC	16	Current Sourcing TTL Input Module
1746-OB6EI	24V DC	6	Electronically Protected Isolated Sourcing DC Output Module
1746-OB8	24V DC	8	Current Sourcing DC Output Module
1746-OB16	24V DC	16	Current Sourcing DC Output Module
1746-OB16E	24V DC	16	Electronically Protected Current Sourcing DC Output Module
1746-OB32	24V DC	32	Current Sourcing DC Output Module
1746-OB32E	24V DC	32	Electronically Protected Current Sourcing DC Output Module
1746-OBP8	24V DC	8	High Current Sourcing DC Output Module
1746-OBP16	24V DC	16	High Current Sourcing DC Output Module
1746-OV8	24V DC	8	Current Sinking DC Output Module
1746-OV16	24V DC	16	Current Sinking DC Output Module
1746-OV32	24V DC	32	Current Sinking DC Output Module
1746-OVP16	24V DC	16	High Current Sinking DC Output Module
1746-OG16	5V DC	16	Current Sinking TTL Output Module

 

Catalog Number	Voltage Category	I/O Points	Description
AC Modules
1746-IA4	100/120V AC	4	120V AC Input Module
1746-IA8	100/120V AC	8	120V AC Input Module
1746-IA16	100/120V AC	16	120V AC Input Module
1746-IM4	200/240V AC	4	240V AC Input Module
1746-IM8	200/240V AC	8	240V AC Input Module
1746-IM16	200/240V AC	16	240V AC Input Module
1746-OA8	100/120V AC	8	120/240V AC Output Module
1746-OA16	100/120V AC	16	120/240V AC Output Module
1746-OAP12	100/120V AC	12	High Current 120/240V AC Output Module
AC/DC Modules
1746-IN16	24V AC/DC	16	24V AC/DC Input Module
1746-OW4	AC/DC Relay	4	Relay (Hard Contact) Output Module
1746-OW8	AC/DC Relay	8	Relay (Hard Contact) Output Module
1746-OW16	AC/DC Relay	16	Relay (Hard Contact) Output Module
1746-OX8	AC/DC Relay	8	Relay (Hard Contact) Output Module
1746-IO4	120V ac (Inputs) 100/120V AC (Relay Contact Outputs)	2 In 2 Out	Combination Input/Output Module
1746-IO8	120V AC (Inputs) 100/120V AC (Relay Contact Outputs)		Combination Input/Output Module
1746-IO12	120V AC (Inputs) 100/120V AC (Relay Contact Outputs)	4 In 4 Out	Combination Input/Output Module
1746-IO12DC	24V DC (Inputs) 100/120V AC (Relay Contact Outputs)	6 In 6 Out	Combination Input/Output Module

 

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