Allen-Bradley 1794-OV16 FLEX I/O Digital Sinking Output Module

Description

The Allen-Bradley 1794-OV16 is a 1794 FLEX Digital DC Output Module. It is fitted inside the terminal bus, making a connection with the field devices and the I/O bus.

Output Specifications

Number of Outputs: 16, nonisolated, sinking
On-state Voltage:
- Minimum: 10V DC
- Nominal: 24V DC
- Maximum: 31.2V DC
Output Current Rating: 8.0 A (16 outputs @ 0.5 A)
Off-state Voltage: Maximum 31.2V DC
On-state Current:
- Minimum: 1 mA per channel
- Maximum: 500 mA per channel
Surge Current: 2 A for 50 ms, repeatable every 2 s
Off-state Leakage: Maximum 0.5 mA
On-state Voltage Drop: Maximum 0.2V DC
Isolation Voltage: Tested @ 2121V DC for 1 second between user and system (no isolation between individual channels)
Output Signal Delay:
- Off-to-On: Maximum 0.5 ms
- On-to-Off: Maximum 1.0 ms
Flexbus Current: 80 mA
Power Dissipation: Maximum 4.2 W @ 31.2V DC
Thermal Dissipation: Maximum 14.3 BTU/hr @ 31.2V DC
Indicators: 16 yellow status indicators (field-side indication, logic driven)
Fusing:
- 1794-OV16: External fusing recommended (e.g., SAN-O MQ4-800 800 mA fuses).

General Specifications

Recommended Terminal Base Unit: 1794-TB3, 1794-TB3K, 1794-TB3S, 1794-TB3SK
Terminal Base Screw Torque: Determined by the installed terminal base
Keyswitch Position: 2
External DC Power Supply Voltage: Nominal 24V DC
External DC Power Voltage Range: 10…31.2V DC (includes 5% AC ripple)
External DC Power Supply Current:
- 49 mA @ 24V DC (range: 21…65 mA) – 1794-OV16
Wiring Category: 2 (Refer to Industrial Automation Wiring and Grounding Guidelines)
Wire Size: Determined by the installed terminal base
Dimensions (H x W x D): 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.)
Weight: 77 g (2.72 oz.)
Enclosure Type Rating: None (open-style)

Environmental Specifications

Attributes and Values

Operating Temperature: -20…+55 °C (-4…+131 °F)
Nonoperating Temperature: -40…+85 °C (-40…+185 °F)
Relative Humidity: 5…95% noncondensing
Vibration: 5 g @ 10…500 Hz (per IEC 60068-2-6)
Shock:
- Operating: 30 g (per IEC 60068-2-27)
- Nonoperating: 50 g (per IEC 60068-2-27)
Emissions: IEC 61000-6-4

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