1794OW8 AB | 1794-OW8 Flex I/O Module

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Brand/ Manufacturer:
Dimensions:
10.2 cm x 5.1 cm x 5.1 cm
Weight:
0.1 KG
Country of Origin: :
USA
Description:
1794-OW8 Flex IO relay Output Module

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Mfr. Part Number:	1794-OW8

Manufacturer:	/ Automation

Description:	1794-OW8 Flex I/O Output Module 8 Isolated N.O. Relay Contacts

Full Description:	1794-OW8 Flex I/O Digital Contact Output Module, 8 Isolated N.O. Relay Contacts

UPC / GTIN:	10662468112298

Status:	Current Product

Description: The 1794-OW8 is a Flex IO relay output module. This module features Eight (8) Form A or Normally Open (N.O.) isolated electromechanical relays. isolated output channels with output voltage range of 74-132VAC. The relay contacts are rated 250V AC, 2 A, 50/60Hz, Resistive; 120/240V AC, 50/60Hz,1800V A Make, 180V A Break; 5…30V DC, 2 A, Resistive. This module is mounted to a 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN and 1794-TBNF terminal bases. It is compatible with any 1794 Flex IO adapters to implement distributed I/O application.

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The 1794-OW8 is a Relay output module that is part of the Flex I/O product family. This module primarily features Eight (8) isolated Normally Open (N.O.) electromechanical relay that are rated 250V AC, 2 A, 50/60Hz for resistive load; 120/240V AC, 50/60Hz,1800V A Make, 180V A Break; 5…30V DC, 2 A, Resistive;

The 1794-OW8 is used with 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN and 1794-TBNF terminal base units. If 1794-TBNF is used, use a 3.0 Ampere, 250VAC slow-blow fuse or the recommended fuse Littelfuse with part. number 239003. This module has a off-state leakage current of 1.0 mA through snubber circuit with minimum contact load rating of 100 μA @ 100 mV DC. It has a pilot duty rating of R150, 5...30V DC, 28V A not to exceed 1 A below 28V DC.

The 1794-OW8 is compatible for use any any Flex I/O communication adapters as well as with FlexBus controllers. This module has a current draw of 5V DC, 35 mA with supply voltage rating of 24V DC, 125 mA. The relay output channels has a maximum of signal delay 10 ms for both signal transitions while the initial contact resistance is 30 mΩ, switching frequency of 1 operation every 3 s or 0.3Hz at rated load and contact mean bounce time of 1.2 ms. Additionally, each output contact has an expected contact life of 100,000 operations, min @ rated loads.

The 1794-OW8 is installed with Eight (8) yellow status indicators, One for each channel and has a keyswitch position of 9 when mounting to the terminal base.

Use only +24 Volts DC power for the 1794-OW8’s power terminals because variations in relay switching time of the outputs may cause one of the relays to momentarily switch the total load current. The entire module measures 1.8 x 3.7 x 2.1 inches. It is compatible with several terminal base units, namely the 1794-TB3, 1794-TB2, 1794-TBN, 1794-TB3S, 1794-TB3K, 1794-TBNF, 1794-TBNKF, and the 1794-TB3SK. It also has a mechanical life of 100,000 operations at rated loads. The resistive relay output current ratings of the 1794-OW8 are 2 Amps at 5 to 30 Volts DC, 0.22 Amps at 125 Volts DC, and 2 Amps for 125 Volts DC and 250 Volts DC. The module also has a continuous isolation voltage of 250 Volts for relay to another relay, to the backplane, and to the power, and 50 Volts for power to the backplane. The external DC supply voltage range of this module is 19.2 to 31.2 Volts DC and it includes the 5% AC ripple and a nominal external DC supply current of 125 mA. It has a maximum off-state leakage current of 1 mA at 240 Volts AC through a snubber. The 1794-OW8â€™s initial contact resistance is 30 M Ω and its minimum contact load is 100 µA at 100 mV DC. It also has a maximum power dissipation of 5.5 Watts and a maximum thermal dissipation of 18.8 BTU/hour, both at 31.2 Volts DC. The maximum output delay time for both the OFF to ON and the ON to OFF states are 10 milliseconds.

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Manufacturer	Automation	Operating Temperature:	0 to 55 C (32 to 131 F)
Flexbus Current	5V DC, 35 mA	Storage Temperature:	-40 to 85 C (-40 to 185 F)
Minimum Contact Load	100 μA @ 100 mV DC	Vibration:	5g @ 10 to 500 Hz
Part Number/Catalog No.	1794-OW8	Operating Shock:	30 g
Brand		Product Type	Flex I/O Relay Output Module
Product Description:	Flex IO relay Output Module	Outputs	8 Relay
Number of Outputs:	Eight, isolated	Off-state Leakage Current	1.0mA through Snubber Circuit
Terminal base:	1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN and 1794- TBNF	Relay Contact	250 Volts AC
Supply Voltage:	24V DC, 125 mA	Initial Contact Resistance	30 m
Relay Contact rating:	250V AC, 2 A, 50/60Hz, Resistive; 120/240V AC, 50/60Hz,1800V A Make, 180V A Break; 5…30V DC, 2 A, Resistive;	Bounce Time	1.2 milliseconds
Pilot Duty Rating	R150, 5...30V DC, 28V A not to exceed 1 A below 28V DC	Switching Frequency	1 operation/3 s (0.3Hz at rated load) max
Indicators:	8 Yellow status indicators	Power Dissipation	5.5 Watts
Keyswitch position	9	Thermal Dissipation	18.8 BTU/hour at maximum
Enclosure	Open-type	UPC	10662468112298
Mounting:	DIN Rail	UNSPSC	32151602
Wire Size:	Determined by installed terminal base

※How is the 1794-OW8 grounded?
The 1794-OW8 is grounded through the DIN rail down to the ground. For proper grounding use a zinc plated yellow-chromate steel DIN rail.

※What is the power dissipation for the 1794-OW8?
The power dissipation for the 1794-OW8 is 5.5 Watts.

※What kind of fusing is recommended for the 1794-OW8?Answer Specifically, 3.0 A, 240 Volt AC slow-blow fuses are recommended for the 1794-OW8.

※Can this module be purchased with a warranty?
Yes, the 1794-OW8 comes with a free one-year warranty from Moore Automation.

※What is this module’s power dissipation?
The 1794-OW8 has a power dissipation around 5.5 Watts.

How many output channels does the 1794-OW8 have?
The 1794-OW8 has Eight (8) output channels.

※What is the output contact form of the 1794-OW8?
The 1794-OW8 has Form A, Normally Open output contacts.

※What is the recommended fuse for use with the 1794-OW8?
The 1794-W8 is compatible with 3.0 A, 250V AC slow-blow fuses (Littelfuse pt. no. 239003).

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