1746-OAP12 Ser C
1746-OAP12/C, Series C, Rev C
The Allen-Bradley 1746-OAP12 is an SLC500 Discrete AC output module. This AC output module features Twelve (12) AC output channels, providing signal voltages of 120/240VAC in Six (6) channels per common terminal. This module has a modifiable jumper for fuse monitoring.
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About 1746-OAP12 Ser C
The 1746-OAP12 Series C module is an Allen-Bradley digital AC output module. It has been approved by the North American Hazardous Location standards for use in hazardous industrial locations as long as the users use and install them properly and do not make unauthorized modifications to them. The 1746-OAP12 Series C module comes with 2 built-in fuses to protect it from short circuits. These fuses cannot protect the module from overcurrents, which will likely not even cause the fuses to trip and which can severely damage the module and its built-in fuses. For protection from overcurrents, install additional fuses that a rated for overcurrent protection. The 1746-OAP12 Series C module dissipates 1 Watt of heat per point, 1.85 Watts of heat minimum, and 10.85 Watts of total heat.
The Allen-Bradley 1746-OAP12 Series C module is in the 120 to 240 Volts AC voltage category. It has 12 outputs arranged in 6 output points per common. At a frequency range of 47 to 63 Hertz, this digital AC output module operates at 85 to 265 Volts AC voltage. Its backplane current rating is 0.37 Amps at 5 Volts DC voltage, and it cannot support any backplane current at 24 Volts DC voltage. The continuous current ratings per point on the 1746-OAP12 Series C module are 2 Amps per point at 86 degrees Fahrenheit, 1.25 Amps per point at 131 degrees Fahrenheit, and 1 Amp per point at 140 degrees Fahrenheit. This module’s maximum on-state voltage drop rating is 1.2 Volts at 2 Amps of current.
Technical specifications for 1746-OAP12
| Manufacturer | Rockwell Automation |
|---|---|
| Module Type | Digital AC Output Module |
| Series | SLC500 |
| Part Number/Catalog No. | 1746-OAP12 |
| Brand | Allen-Bradley |
| No. of Outputs | Twelve (12) Inputs |
| Output Voltage | 120 / 240VAC output |
| Operating Voltage Range | 85-264 VAC |
| Output Delay Time, OFF to ON | 11 ms |
| Output Delay Time, ON to OFF | 1 ms |
| OFF state leakage current | 2 mA |
| Load Current | 10 mA |
| Backplane Current at 5.1 Volts | 0.370 A |
| Continuous current per point | 2.0 A @ 30 °C (86 °F) 1.25 A @ 55 °C (131 °F) 1.0 A @ 60 °C (140 °F) |
| Continuous current per module, max | 9.0 A @ 30 °C (86 °F) 6.8 A @ 55 °C (131 °F) 6.0 A @ 60 °C (140 °F) |
| Voltage Range | 85-265 Volts AC |
| Outputs | 12 |
| Current/Output at 30 Celsius | 2 amps |
| Current/Output at 60 Celsius | 1 amp |
| Backplane Current (5 Volts) | 370 milliamps |
| Current/Module (30 Celsius) | 9 amps |
| Applications | High Current |
| Step Response | 60 milliseconds in, 2.5 milliseconds out |
The 1746-OAP12 SLC 500 Digital Output Module by Allen-Bradley is an AC output module fitted in any slot of the 1746 Chassis and it comes with a Removable Terminal Block (RTB). It has 12 outputs with 6 output points per electronically-fused common. The 1746-OAP12 has 120-240V AC of output voltage category and it has a module voltage range between 85 and 265V AC at 47-63Hz. The module has a backplane current of 0.370A at 5V DC voltage and it reaches 0A at 24V DC. The 1746-OAP12 has an output signal delay time of 11ms for OFF mode and 1ms for ON mode and the maximum leakage current on its output in its OFF state is 2mA. The lowest possible current load on each output point is 10mA, and the normal current on each point is 2A at 30 deg. Celsius (86 deg. Fahrenheit) and 1A at 60 deg. Celsius (140 deg. Fahrenheit). The 1746-OAP12 module has a total output current of 9A at 30 deg. Celsius (86 deg. Fahrenheit) and it has a voltage loss of 1.2V DC at 2.0A. It has a surge current of 17A for 25ms repeatable every 2 seconds at 60 deg. Celsius on each point and it has a surge of 35A per common for 10ms. The 1746-OAP12 has a maximum 1AW heat dissipation on each point and an overall module heat dissipation of 10.85W. Its operating temperature ranges between 0 and 60 deg. Celsius (32 and 140 deg. Fahrenheit) at 5-95% relative humidity without condensation. The 1746-OAP12 has an operational shock rating of 30G and a vibrational withstand of 5G at 10-500Hz.
The 1746-OAP12 has Twelve (12) output channels with Six (6) points per common with each common installed with an electronic fuse. Additionally, it provides an isolation as one group of output channels may still continue to operate even if the fuse of the other channel group is busted. Additionally, this output module has an internal fuse that may be modified to enable monitoring of blown fuse. To enable monitoring of fuse, the jumper is set to short pins 2 and 3. By default, the jumper is set to terminals 2 and 1 which disables the monitoring of the fuse.
The 1746-OAP12 is compatible for use with any SLC500 processors. When used with SLC5/02 and later processors, programming a fault routine is not compatible to be used to clear the major fault bit. The module’s major fault bit is S:1/13 with major fault code stored in S:6. For a blown fuse, the appropriate replacement fuse is SAN-O HQ 6.3A. This fuse maintains UL/CSA rating. The appropriate catalog number for replacement fuse kit is 1746-F9 wherein there are Five (5) fuses per kit. The 1746-OAP12 has an inherent signal delay of 1ms for ON transition and 11.0 ms for OFF transition. It has a OFF state leakage Current of 2 mA.