The Allen‑Bradley 1769-IQ16 module belongs to the CompactLogix I/O family. It provides sixteen DC input points for 24V digital signals. You can connect devices that use sink or source wiring configurations. For instance, proximity sensors, limit switches, push buttons, or relay contacts work well with this module. Moreover, each input accepts voltage from 10 to 30V DC at 30°C.
Additionally, the 1769-IQ16 organizes its inputs into two separate groups. Each group has eight channels. This grouping allows independent operation of each group. The input delay time from OFF to ON is 8 milliseconds. Therefore, you get reliable and consistent digital input readings.
Key Parameters:
Number of inputs: 16 (two groups of 8 inputs each)
Voltage category: 24V DC sink or source
Operating voltage range: 10 to 30V DC at 30°C (86°F)
Operating voltage range: 10 to 26.4V DC at 60°C (140°F)
Minimum ON‑state voltage: 10V DC at 2 mA
Maximum OFF‑state voltage: 5V DC at 1.5 mA
Input delay (ON to OFF / OFF to ON): 8 milliseconds
Maximum surge current: 250 mA
Nominal input impedance: 3 kΩ
Backplane current draw: 115 mA at 5.1V DC
Heat dissipation: 3.55 Watts (12.11 BTU per hour)
Isolation voltage: 75V DC (IEC Class 2 reinforced, tested at 1697V DC for 1 second)
Isolation type: Input‑to‑BUS and group‑to‑group
Wire type: Copper, 90°C rating
Wire size (solid): 22-14 AWG
Wire size (stranded): 22-16 AWG
Replacement terminal block: 1769-RTBN18
Power supply distance rating: 8 modules
The 1769-IQ16 measures 118 mm in height (4.65 inches), 35 mm in width (1.38 inches), and 87 mm in depth (3.43 inches). Its weight is approximately 0.27 kg (0.60 lbs). You can mount it on a DIN rail or a panel. The module uses an open‑style enclosure for better heat dissipation. Terminal screws require 6 lb‑in of torque for reliable connections.
The operating temperature range spans 0 to 60°C (32 to 140°F). Relative humidity can reach 5% to 95% without condensation. The module resists operational shock up to 30G. Additionally, it withstands operational vibration of 5G at 10 to 500 Hz. Maximum operating altitude is 2000 meters (6561 feet) without derating.
First, ensure the system power supply is turned off. Next, mount the 1769-IQ16 onto the DIN rail or panel. Connect it to the adjacent module using the bus interface. Then, wire your DC field devices to the removable terminal block. The replacement part number for this block is 1769-RTBN18. Use copper wire between 22 and 14 AWG for solid wire, or 22 to 16 AWG for stranded wire.
Keep wire lengths reasonable to maintain signal integrity. After wiring, insert the terminal block into the module. Finally, power up the system and verify proper operation. The 1769-IQ16 communicates with the controller through the bus interface. No external power supply is necessary for the module itself.
The 1769-IQ16 supports both sink and source wiring configurations. This flexibility makes it suitable for many field devices. In sink mode, the input provides a path to ground for the current. In source mode, the input receives current from the field device.
Furthermore, the two input groups operate independently. Group 1 includes channels 0 through 7. Group 2 includes channels 8 through 15. You can wire group 1 as sink and group 2 as source if needed. Therefore, the 1769-IQ16 adapts to your existing field wiring schemes.
The 1769-IQ16 offers specific advantages for 24V DC applications. For instance, the wide voltage range (10 to 30V DC) tolerates power supply variations. The 8 millisecond input delay filters out contact bounce and electrical noise. The 3 kΩ input impedance ensures low current draw from your sensors.
Additionally, the group‑to‑group isolation provides extra protection. If a short occurs in group 1, group 2 continues to operate normally. The reinforced insulation (tested at 1697V DC) protects your controller from field wiring faults. Therefore, the 1769-IQ16 delivers reliable performance in demanding environments.
This module works with CompactLogix controllers. It also fits into any 1769 Compact I/O chassis. The bus interface supplies 5V DC power to the module. Compatible power supplies include the 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. No external power supply is necessary for the module itself.
However, remember the power supply distance rating. You cannot place this module more than 8 slots away from the system power supply. Otherwise, voltage drop may occur. If used with a MicroLogix 1500, insert the 1769-IQ16 after the base unit or any adjacent module.
The 1769-IQ16 is a current product from Allen‑Bradley. It remains in active production. Therefore, availability and support are both excellent.
1769-IQ16 DC Input Module (1 unit)
Removable terminal block (compatible with 1769-RTBN18)
Quick start user guide
Bus connector cover
Note: No certificates or warranty documents are included in the package.
We ship worldwide using FedEx, UPS, or DHL. The gross weight is 0.27 kg. Standard delivery takes 3‑7 business days. A tracking number will be provided after shipment.
1. What types of field devices can I connect to the 1769-IQ16?
You can connect any device that outputs 24V DC digital signals. For example, proximity sensors, limit switches, push buttons, selector switches, relay contacts, and magnetic starter auxiliaries work well with the 1769-IQ16.
2. What is the difference between sink and source wiring on this module?
Sink wiring means the input provides a path to ground. Source wiring means the input receives current from the device. The 1769-IQ16 accepts both types. You can mix sink and source across the two groups.
3. What replacement terminal block fits the 1769-IQ16?
The correct replacement is part number 1769-RTBN18. This removable terminal block allows easy wiring changes without removing the module from the DIN rail.
4. What is the power supply distance rating for this module?
The rating is 8 modules. This means the 1769-IQ16 must be installed no more than 8 slots away from the system power supply. Exceeding this limit may cause voltage drops.
5. Can I use this module with a MicroLogix 1500 controller?
Yes, the 1769-IQ16 is compatible with both CompactLogix and MicroLogix 1500 controllers. For MicroLogix 1500, insert the module after the base unit or any adjacent module.
| Brand Name | Allen-Bradley |
| Model No. | 1769-IQ16 |
| Product Type | Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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