Models 3502E, 3503E, and 3505E can self-test to detect stuck-On conditions where the circuitry cannot tell whether a point has gone to the Off state. Since most safety systems are set up with a deenergize-to-trip capability, the ability to detect Off points is an important feature. To test for stuck-On inputs, a switch within the input circuitry is closed to allow a zero input (Off) to be read by the optical isolation circuitry. The last data reading is frozen in the I/O communication processor while the test is running.
All TMR Digital Input Modules support hot-spare capability, and
require a separate external termination panel (ETP) with a cable interface to the Tricon backplane. Each module is mechanically keyed to prevent improper installation in a configured chassis.
3501E/3501T 115 VAC/VDC
3502E 48 VAC/VDC
3503E 24 VAC/VDC
3505E 24 VDC
The TRICONEX 4352B PLC can be used in a variety of safety applications such as emergency shutdown (ESD) systems, fire and gas detection systems, and turbine control systems. It uses TRICON security software and supports several programming languages, including ladder logic, Function Block Diagram (FBD), and Sequential Function Diagram (SFC). In summary
the TRICONEX 4352B is a powerful and reliable safety PLC used in a wide range of critical industries where safety and reliability are critical.
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