1769-IQ16 — Compact I/O 16-Point 24V DC Sinking/Sourcing Input Module

The 1769-IQ16 is a 16-point 24V DC digital input module for the 1769 Compact I/O platform, accepting both sourcing (PNP) and sinking (NPN) field devices on the same module without rewiring or jumper changes. It's one of the most widely deployed input modules in Compact I/O systems precisely because of that flexibility — a panel builder doesn't need to specify input type in advance or stock two separate module variants for different sensor conventions.

Specifications

Parameter	Value
Part Number	1769-IQ16
Input Points	16
Input Voltage	24V DC (10–30V)
Input Type	Sinking/Sourcing (selectable per device, not per channel)
Input Current (at 24V)	~5 mA typical
Input Groups	2 × 8 points, separate commons
Input Filter	Software selectable, multiple settings
Backplane Current (5V)	~100 mA
Operating Temperature	0°C to 60°C

Wiring and Common Group Notes

The 16 inputs split into two groups of 8, each with its own common terminal — wire each group's common to match the field device convention used in that group.
Mixing sourcing and sinking devices within the same group of 8 is generally not supported since the common reference must match the device convention for that group; mixed conventions require splitting devices across the two separate groups instead.
Select the input filter time based on the connected device type — mechanical contacts (pushbuttons, limit switches) typically benefit from longer filter settings to reject contact bounce, while fast electronic sensors may use shorter filter times to capture brief pulses.
Verify all devices within one group share a genuinely common ground reference — connecting devices from electrically isolated supplies to the same group's common can introduce noise or incorrect readings.

FAQ

Q: Can sourcing and sinking devices be mixed on the same group of 8 inputs?

No. Each group's common terminal must match the wiring convention of the devices connected to that group. To mix PNP and NPN devices on one module, wire each type to its own separate group of 8.

Q: How is the input type (sourcing or sinking) selected — is there a jumper or switch?

There's no jumper or software setting for input type — it's determined entirely by how the field device is physically wired to the module's terminals. The module's internal circuitry accommodates either convention without configuration.

Q: What filter time should be used for a typical proximity sensor?

A mid-range filter setting is generally adequate for standard inductive or photoelectric proximity sensors. Faster pulse-counting applications may need a shorter filter; noisy electrical environments with mechanical switches benefit from longer filtering to avoid false triggers.

Q: Can this module be used in a remote I/O chassis over EtherNet/IP?

Yes. The 1769-IQ16 functions identically whether installed locally on the controller's bus or in a remote 1769 chassis connected via an appropriate communication module — addressing in the controller program is unaffected by physical location.

1769-IQ16 New Sealed 1769IQ16 /A 16 Pt 24VDC Input Module