1794-OB16 AB
About 1794-OB16
The Allen Bradley 1794-OB16 module is a digital DC output module used for FLEX I/O. It has 16 current source outputs. The minimum, maximum, and nominal on state voltages are 10 V DC, 31.2 V DC, and 24 V DC, respectively. The rated output current of all 16 outputs (each rated at 0.5 amperes) is 8 amperes, with a minimum conduction current of 1 milliampere per channel and a maximum conduction current of 500 milliamperes per channel. The maximum conduction voltage drop is 0.5 volts DC. The surge current is 2 amperes, lasting for 50 milliseconds and can be repeated every 2 seconds. The maximum off state leakage current is 0.5 milliampere. The isolation voltage is 50 volts continuous. The module has been tested between the user and the system at 850 volts DC for 1 second.
The output signal delay of the 1794-OB16 module is 0.5 milliseconds from off to on, and 1 millisecond from on to off. The FlexBus current is 80 mA at 5 V DC, resulting in a maximum power consumption of 5.3 watts at 31.2 V DC. The heat dissipation of the 1794-OB16 module is 18.1 BTU per hour. The maximum off state voltage is 31.2 volts DC. The module size is 3.7 x 3.7 x 2.7 inches. The approximate weight of the 1794-OB16 module is 78 grams. This module has 16 yellow indicator lights for on-site status indication. The wiring size depends on the installed terminal block. This module has an open housing and complies with the T3 IEC temperature code. The operating temperature range is -4 to 131 degrees Fahrenheit.
This module has sixteen (16) channels of 24VDC discrete output channels and supports source wiring configurations. Used in conjunction with terminal blocks, it supports various terminal blocks such as 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, and 1794-TB3SK. Up to eight (8) instances of 1794-OB16 can be installed in a single Flex I/O rack. In addition, 1794-OB16 can also be used as a local I/O adapter for FlexLogix controllers or FlexLogix local IO extenders (1794-FLA). The key switch position of this module is 2, and the enclosure level is open.
The output voltage range of 1794-OB16 is 10 to 31.2VDC, with a nominal voltage output of 24VDC. It measures 94 x 94 x 69 millimeters (3.7 x 3.7 x 2.7 inches) in size and weighs 78 grams (2.75 ounces). This module is not equipped with internal fuses, so external fuses can be installed according to system requirements. The recommended fuse for installing external fuses is the SAN-O MQ4-800 mA fuse. This module is equipped with sixteen (16) field side LED indicators.
