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- Allen Bradley
- 1769-IM12
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.3kg
- Xiamen, China
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Technical Report: 1769-IM12 Compact I/O 12-Channel 240V AC Digital Input Module
1. Product Overview
The 1769-IM12 is a Compact I/O AC digital input module designed for industrial automation systems that require direct acquisition of high-voltage AC field signals.
It provides 12 input channels operating in the 200–240V AC range, converting AC field signals from sensors, switches, and auxiliary contacts into digital signals that can be processed by PLC systems.
This module is widely used in CompactLogix and Compact I/O architectures for monitoring high-voltage AC status signals in industrial environments.
2. Brand and Series Information
Brand: Industrial automation control platform ecosystem
Series: 1769 Compact I/O Series
Product Family: AC Digital Input Modules
Module Type: 12-Channel 240V AC Digital Input Module
3. Product Function Description
The 1769-IM12 is designed to monitor AC voltage presence or absence and convert it into PLC-readable ON/OFF digital signals.
Core functions include:
- 12 AC digital input channels
- Supports 200–240V AC industrial control signals
- Converts AC input states into PLC digital logic
- Internal common grouping for simplified wiring
- Built-in electrical isolation for safety
- LED status indicators for each channel
- Designed for high-voltage industrial environments
It is typically used where AC control signals need to be monitored directly without external signal conditioning.
4. Technical Parameters
Electrical Specifications
| Parameter | Value |
|---|---|
| Number of Inputs | 12 channels |
| Input Voltage Range | 159–265V AC |
| Nominal Voltage | 200/240V AC |
| Frequency Range | 47–63 Hz |
| On-state Voltage | ≥159V AC |
| Off-state Voltage | ≤40V AC |
| Input Type | AC digital input |
| Backplane Current | ~100 mA @ 5.1V DC |
| Power Consumption | ~3.65 W |
| Input Delay (ON/OFF) | ~20 ms |
Isolation & Protection
| Parameter | Value |
|---|---|
| Isolation Voltage | 1836V AC for 1s / 2596V DC for 1s |
| Isolation Type | Input-to-bus reinforced isolation |
| Working Voltage | 132V AC (IEC class reinforced insulation) |
| Protection Class | Industrial grade insulation system |
| EMC Immunity | Designed for industrial electrical noise environments |
Performance Characteristics
| Parameter | Value |
|---|---|
| Signal Type | AC digital switching input |
| Input Grouping | Internally connected commons |
| Response Time | ~20 ms typical |
| Inrush Current Handling | Designed for AC transient tolerance |
| Diagnostic Capability | Channel status LED indication |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (H × W × D) | 118 mm × 35 mm × 87 mm |
| Height with Tabs | 138 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Weight | ~0.30 kg |
| Mounting Type | DIN rail / panel mount |
| Slot Width | 1 slot |
| Terminal Type | Removable terminal block |
Environmental Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% – 95% non-condensing |
| Vibration Resistance | Industrial IEC standard |
| Shock Resistance | Up to 30G |
| Pollution Degree | Industrial Grade 2 |
5. Product Advantages
1. Direct High-Voltage AC Input Handling
Allows direct connection to 240V AC control signals without external converters.
2. Simple Wiring Architecture
Internal common design reduces wiring complexity in control panels.
3. Strong Industrial Isolation
High dielectric strength ensures safe operation in high-voltage environments.
4. Stable Signal Detection
Reliable ON/OFF detection with defined voltage thresholds.
5. Compact Design
12 channels in a single-slot module saves cabinet space.
6. Built-in Diagnostics
LED indicators simplify troubleshooting and maintenance.
6. Application Areas
The 1769-IM12 is widely used in:
- Industrial machine status monitoring
- Motor control center (MCC) feedback signals
- Pump and fan control systems
- HVAC system status monitoring
- Power distribution panel signal monitoring
- Industrial automation interlocking systems
- Conveyor system status detection
- Auxiliary contact monitoring in switchgear systems
It is especially suitable for environments where 240V AC control signals are commonly used.
7. Recommended Models (Same Series / Related Modules)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-IA16 | 16-Point AC Input | 120V AC input module | Small AC signal systems |
| 1769-IQ16 | DC Input Module | 24V DC inputs | Standard digital sensing |
| 1769-IM8 | AC Input Module | 8-channel AC input | Smaller AC systems |
| 1769-OW16 | Relay Output Module | 16-point relay output | Switching control |
| 1769-OB16 | Transistor Output | 24V DC outputs | Fast switching control |
8. Other Popular Models (Same Platform – Widely Used)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-L33ER | PLC Controller | EtherNet/IP CPU | Machine automation |
| 1769-L36ERM | PLC Controller | Motion control CPU | Advanced systems |
| 1769-AENTR | Ethernet Adapter | Dual-port communication | Distributed I/O |
| 1769-SDN | DeviceNet Scanner | Fieldbus integration | Legacy networks |
| 1769-ASCII | Serial Module | ASCII communication | Barcode/serial devices |
9. System Role Summary
The 1769-IM12 functions as a high-voltage AC digital signal acquisition module in Compact I/O systems. It is used to detect the ON/OFF state of industrial AC control signals and convert them into PLC logic signals.
It is commonly applied in systems where 240V AC signals are already present in control circuits, eliminating the need for intermediate signal conversion.
10. Summary
The 1769-IM12 is a 12-channel 240V AC digital input module designed for direct industrial signal monitoring. It provides safe isolation, reliable AC detection, and compact integration within Compact I/O architectures.
Its key strengths include high-voltage compatibility, robust isolation, simple wiring design, and stable industrial performance.