1769-OV16 Compact I/O 16-Point 24V DC Sinking Output Module

The 1769-OV16 is a compact 16-point solid-state digital output module designed for 24 V DC sinking-output circuits.

Its most important distinction is the sinking output configuration. The module switches the connected load toward DC common and is therefore intended for use with compatible sourcing field devices.

All 16 outputs are arranged in one output group, making the module suitable for compact control panels that require a high density of DC output points without dividing the channels across multiple isolated groups.

The transistor output design provides fast switching, with a typical turn-on specification of 0.1 ms and a turn-off specification of 1.0 ms. This makes it suitable for repetitive control of indicators, relay interfaces, small solenoid loads and other compatible 24 V DC devices.

Key Features

• 16 solid-state digital outputs
• 24 V DC sinking configuration
• 20.4 to 26.4 V DC operating range
• Fast 0.1 ms turn-on response
• One 16-point output group
• Configurable program and fault states
• Removable terminal block design
• Compact DIN-rail installation

Typical Applications

• Relay interface control
• Solenoid valve switching
• Indicator and alarm circuits
• Packaging machine outputs
• Existing 1769 I/O expansion systems

24V DC Sinking Output Design

The 1769-OV16 is a sinking-output module.

In a compatible circuit:

• The field device supplies current toward the module
• The module switches the circuit toward DC common
• Sourcing field devices are required
• Wiring polarity must match the sinking topology

This is the main electrical difference from a sourcing-output module.

1769-OV16 vs 1769-OB16

1769-OV16

24 V DC sinking output

Used with sourcing field devices

1769-OB16

24 V DC sourcing output

Used with sinking field devices

These modules are not direct wiring substitutes. The load polarity and field-device type must be checked before replacement.

16 Outputs in One Group

The module provides 16 output channels arranged as one group.

This structure is suitable when:

• All outputs use the same DC supply reference
• Separate group isolation is not required
• High output density is needed
• Panel space is limited

Applications requiring independently isolated output groups may require a different module configuration.

Output Current Capacity

Maximum Current per Point

0.5 A at 60°C

1.0 A at 30°C

Maximum Current per Module

4.0 A at 60°C

8.0 A at 30°C

The permissible current decreases as ambient temperature rises.

Load current, simultaneous channel usage and enclosure temperature must be considered together during system design.

Fast Solid-State Switching

The transistor output circuit provides:

Turn-On Delay

0.1 ms

Turn-Off Delay

1.0 ms

This switching response is suitable for repetitive machine-control outputs where faster operation is required than with a conventional relay output module.

Program and Fault State Configuration

The module supports configurable output behavior when the controller changes operating state.

Each output can be configured to:

• Hold its last state
• Switch to a user-defined safe state
• Turn on according to the configured value
• Turn off according to the configured value

These settings can help define predictable machine behavior during program-mode or fault-mode transitions.

Inductive Load Protection

When switching inductive 24 V DC loads such as relays or solenoids, appropriate suppression must be installed across the load.

Suitable circuit protection helps:

• Reduce voltage spikes
• Protect transistor outputs
• Improve module service life
• Reduce electrical interference

The suppression device must be installed with the correct polarity for the sinking-output circuit.

Open-Style Construction

The 1769-OV16 is an open-style industrial module and does not provide a standalone sealed enclosure.

It should be installed:

• Inside a suitable electrical cabinet
• Away from conductive debris
• With adequate ventilation
• Within the specified temperature range
• With appropriate grounding and wiring separation

It should not be installed as an exposed field device.

Replacement Compatibility

Before replacing an existing module, verify:

• Exact model number
• Sinking output requirement
• Field-device polarity
• 24 V DC supply range
• Output current per channel
• Total simultaneous load current
• Terminal block condition
• Controller and rack compatibility
• Program and fault-state settings

Matching only the number of outputs is not sufficient.

Installation Notes

• Disconnect field and controller power
• Confirm the load uses a sourcing configuration
• Verify DC polarity before wiring
• Check total module current
• Derate output current at higher temperatures
• Install suppression on inductive loads
• Lock the module bus connector fully
• Secure the removable terminal block
• Review program and fault-state behavior
• Test each output before production

FAQ

Q1: How many outputs does 1769-OV16 provide?

A1: It provides 16 solid-state digital outputs.

Q2: Is this a sourcing or sinking output module?

A2: It is a 24 V DC sinking output module.

Q3: What field devices should be connected?

A3: It should be used with compatible sourcing field devices.

Q4: What is the operating voltage range?

A4: The operating range is 20.4 to 26.4 V DC.

Q5: What is the maximum current per output?

A5: It is 0.5 A per point at 60°C and up to 1.0 A per point at 30°C.

Q6: What is the maximum total module current?

A6: It is 4 A at 60°C and up to 8 A at 30°C.

Q7: What is the difference from 1769-OB16?

A7: OV16 is a sinking-output module, while OB16 is a sourcing-output module.

Q8: Can it control solenoid valves?

A8: Yes, provided the voltage, polarity and current are compatible and suitable inductive-load suppression is installed.