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Allen Bradley 1746-IO12 SLC 500 Combination Input/Output Module with 120V AC Inputs
Allen Bradley 1746-IO12 SLC 500 Combination Input/Output Module with 120V AC Inputs
120V AC Inputs Combination Input/Output Module
Relay Contact Outputs SLC 500 Module
6 Inputs/6 Outputs Allen Bradley 1746-IO12
Place of Origin:
USA
Brand Name:
Allen Bradley
Model Number:
1746-IO12
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Product Details
Product Model:
1746-IO12
Estimated Shipping Size:
12.7x5.1x15.2cm
Manufacturer:
Allen Bradley
Weight:
0.4 Kg
Backplane Current:
70-90 MA
Input Operating Voltage:
120 VAC Volts AC
Inputs:
Six (6) 120VAC Inputs
Output Operating Voltage:
24-125 VDC; 120 - 240 VAC
Highlight:
120V AC Inputs Combination Input/Output Module
,Relay Contact Outputs SLC 500 Module
,6 Inputs/6 Outputs Allen Bradley 1746-IO12
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
The 1746-IO12 SLC 500 Input/Output Combination Module by Allen-Bradley features 120V AC rated inputs and relay contact outputs. It operates with an input voltage range of 85-132V AC and an output range of 5-265V AC at 47-63 Hz and 5-125V DC at 47-63 Hz. The module draws 0.090A at 5V DC and 0.070A at 24V DC from the chassis backplane. Each output point provides a contact rating of 2.0A continuous current with maximum output power of 28VA. Both input and output signals have maximum delay times of 35ms for ON state and 45ms for OFF state.
The 1746-IO12 features Normally-Open (N.O.) contact outputs with nominal continuous current of 1.5A at 120V AC and 1.2A at 24V DC. Power dissipation is 0.27W per input point and 0.133W per output point, with aggregate heat dissipation of 4.60W. Operating temperature range is 0-60°C (32-140°F) at 5-95% humidity without condensation, while storage temperature ranges from -4 to 85°C (-40 to 185°F). The module provides electro-optical isolation tested at 1500V between I/O terminals and control logic, with NEMA standard ICS 2-230 rated noise immunity. It withstands functional vibration of 2.5G at 57-200Hz and maintains optimum function at 30G operational shock.
Technical Specifications
| Attribute | 1746-IO12 |
|---|---|
| Points per module | 6 inputs / 6 outputs |
| Points per common | 6 |
| Voltage category | 120V AC |
| Voltage, operating (inputs) | 85...132V AC |
| Voltage category (outputs) | 100/120V AC Relay contact output |
| Voltage, operating (outputs) | 5...265V AC / 5...125V DC |
| Backplane current (5V DC) | 0.090 A |
| Backplane current (24V DC) | 0.070 A |
Frequently Asked Questions
Why are we specifying the 1746-IO12 instead of discrete cards?
It boils down to chassis real estate. Since it's a combo module, we're handling both inputs and outputs in one single slot. If you're running out of room on the SLC 500 backplane but only need a handful of points, this is the go-to for saving panel space.
How do the AC inputs stack up against the 1746-IA16?
Electrically, they're basically twins. Both handle an 85-132 VAC swing. The only difference you'll care about in the field is the density--you're getting 6 inputs here, whereas the IA16 gives you 16. Same performance, just fewer channels.
What's the deal with the relay side?
You're looking at six Form A contact outputs. In plain English: these are simple Normally Open (N.O.) dry contacts. If your prints call for N.C. logic on the hardware side, this card isn't going to cut it without an external relay.
Where does it sit in the I/O count hierarchy?
Think of it as the "middle ground." It's got a higher relay count than the IO4 but doesn't quite reach the IO8's capacity. It's perfect for those small control loops where a 1:1 input-to-output ratio is enough.
Any "no-go" zones for installation?
Standard SLC 500 rules apply: Stay out of Slot 0. That slot is hard-coded for the CPU. You can drop the IO12 into any other slot in the local or expansion chassis without a problem, but Slot 0 will fault the system.
What's the biggest threat to this module's lifespan?
Chemical exposure. If the module is sitting in a cabinet with corrosive vapors or nasty airborne stuff, the circuits will degrade fast. We need to run regular loop validations to make sure the response times are still within spec.
Can I hot-swap this if an output fails?
Definitely not. The 1746 platform doesn't support RIUP (Removal and Insertion Under Power). If you pull this module while the backplane is hot, you're risking a spark or a blown processor. Always kill the supply power before a swap.
Will I need to mess with RSLogix after a replacement?
Nope. If you're replacing a dead unit with the same part number, it's a straight swap. No software changes, no re-mapping, and no reconfiguration. Just seat it, wire it up, and power it back on.
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