TRICONEX 3805E/3805H Analog output module 3805HN

The following types of AO modules can be used in nuclear power stations:
• Model 3805HN (EAO 5897) is the only AO module factory available for nuclear power with Tricon V10 platform and is a 4-20 mah (mA) AO module. This model has eight DC coupled outputs, all with a common return. The module provides a redundant loop power supply for use with a separate indicator. If this option is used, the licensee must supply the aoo with external loop power. The 3805HN is based on the 3805EN with Tricon V9 platform approval, but with a minor enhancement for improved inductive load capacity.

Designed for the most critical applications, the monitor Digital Output (SDO) module meets the needs of a system whose output remains in a single state over a long period of time (in some areas of the application, for years). The SDO module receives output signals from each of the three main processor channels. Each group of three signals is then voted on by a fully fault-tolerant person. The four-fold output switch element has a mechanical power relay, and a voting output signal passes through to the field terminal. Each SDO module has voltage and current loopback circuit coupling
Sophisticated online diagnostics verify the presence of each output operating switch, field circuit and load. The design provides full fault coverage needed to affect the output signal. These modules are called “supervisory” modules.
Because fault coverage is extended to include potential field problems. In other words, the field circuit is overseen by the SDO module so that the following field failures can be detected:
• Power failure or blown fuse
• Turn on or lose load
• A short circuit causes the load to be powered on incorrectly
• Short-circuit load when the power is off
Unable to detect any field voltage output point for the power alarm supply indicator. The load alarm indicator cannot be detected. When an optional auxiliary component power supply is in use, the short-circuited load enters a state that can be detected as Off. (No 3611E AC module is provided on this model.) All SDO modules support hot spare capabilities, which require a separate cable interface from the external terminal panel (ETPTricon backplane).