84872151

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Current/Voltage (84872151) monitors are input devices that monitor and measure electric current or voltage within a system in order to ensure safe and efficient operation. Current monitors contain a resistor and an adjustable current range switch which allow them to measure current and to monitor it for on-off, open-circuits, overloads or other system faults. Voltage monitors operate similarly but measure voltage instead of current. Both types of monitor may also contain relays which are used to open and close circuits as a response to a current/voltage threshold being reached, therefore allowing for some form of automated control.

The 84872151 Monitor is a combined current/voltage monitoring device that monitors both inputs for accuracy. The 84872151’s main functions include: monitoring for current or voltage faults; controlling equipment by responding to an alarm signal; interacting with other monitors for alarm and signal purposes; and providing a programmable alarm output.

The 84872151 contains three separate monitor circuits, one each for monitoring current, voltage and relay output. The current monitoring circuit is capable of measuring a wide range of current from 0.1 Amps to 100 Amps, and it can detect current overloads. The voltage detection circuit is also capable of detecting over-current conditions. The relay output circuit is a tri-state circuit, allowing for both On/Off and Hold/Hold operation.

The 84872151 also has adjustable hysteresis and delay parameters that can be adjusted to suit specific applications. The hysteresis settings control when the monitor trips and when it resets, creating a “window” of operation that can be adjusted for greater accuracy and for more specific monitoring applications. The adjustable delay allows the monitor to remain in an alarm state until the desired parameters are met.

The 84872151 is widely used in industrial process automation and system control applications. Its current/voltage monitoring capabilities allow for better system protection from faults, over-currents and under-voltage conditions. The adjustable hysteresis and delay parameters make it suitable for monitoring a wide range of tasks, from simple motor-starters to more complex automation tasks. Furthermore, the tri-state relay output allows for on/off and hold/hold functions and can be used to control a wide range of equipment.

In conclusion, the 84872151 current/voltage monitor is a versatile and highly configurable device that can be used in a wide range of applications. Its combination of current and voltage monitoring with adjustable delay and hysteresis parameters and relay output capabilities makes it well-suited for use in industrial process automation and system control.

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