Allen-Bradley 1734-OB8S POINT safety output module has solid-state output and is divided into 2 series (A and B). It has a dual channel mode which will use 2 output signals to control any redundancy. It has a 2-button switch position, 8 on the left and 2 on the right. Allen-Bradley 1734-OB8S series A module has 8 outputs per module, which is the current source type of the module. The 1734-OB8S output point has a maximum current of 1A. Its pulse width is 475 μs and its pulse period is 575 milliseconds. The maximum field capacitance limit for each output is 950 nF. It has a voltage drop of 0.165 V and a maximum leakage current of 0.1 mA. 1734-OB8S has short-circuit detection function, which is divided into short-circuit, high, low and cross circuit fault detection. The short circuit is electronically protected and its output can collect 8A current.
The response time of the 1734-OB8S is up to 6.2 milliseconds, and its point bus current limit is 190 mA. Its maximum power consumption is 4.5 watts, with a typical value of 3.02 watts. Its heat dissipation is 15.38 BTU per hour. It has an isolation voltage of 50 volts and has basic insulation between the field side and the system. There is no isolation between the channels. The 1734-OB8S has been tested for 60 seconds at 707 volts DC. It has a nominal bus power supply voltage of 24 volts DC and a voltage range of 19.2 to 28.8 volts DC. At no load, its power bus current is 75 mA. It comes with multiple indicators, 1 yellow for lock status, 1 green / yellow for power status, and 8 for channel I / O. 1734-OB8S wiring category is 2 open signal port. The wiring size and terminal block torque can only be determined by the installed terminal block. The 1734-OB8S measures 77 x 25 x 55 mm.
When the 1734-OB8S is not connected to a load, the maximum power bus current of the 1734-OB8S is 50 mA. For these two Allen-Bradley 1734-OB8S series, the operating temperature is -20 to 55 degrees Celsius and the storage temperature is -40 to 85 degrees Celsius. It has a relative humidity of 5% to 95% (non-condensing), a vibration of 5 G at 500 Hz, an operating shock of 30 G, and an inoperable 50 G. It meets the following requirements: SIL CL2, PLe, category 4. This safety module is compatible with GuardLogix, Compact GuardLogix and SmartGuard controllers. When configuring this 1734-OB8S module, please use RSNetWorx for DeviceNet software. However, if you are using Ethernet, the GuardLogix programming tool and Logix Designer application are good choices when configuring the 1734-OB8S POINT safety output module. The safety I / O module weighs 2.2 ounces.
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