System and Control Options

Following are some similarities and differences between Latched and Unlatched alarms.

Liqui-tect System’s Response to Alarms - Both Latched and Unlatched

When a leak or cable break is detected:

An alarm occurs,

A record is created in the Alarm History Log and

The leak-detected or cable-break alarm output contact changes state.

Latched Alarms Only

The user must reset latched alarms before another leak or cable break alarm can occur.

NOTE

A contaminated cable alarm will never latch. Because this type of alarm serves only as a warning, it allows leak or cable break alarms to occur.

Unlatched Alarms Only

When an alarm output returns to its normal state, the alarms automatically clear and the system returns to normal.

If two leaks occur simultaneously on the same cable, the system creates a record with the distance of the first leak and displays an average distance for the two leaks. Always check the Alarm History Log (see 5.2 - View Alarm History) when leak detected alarms occur in unlatched mode.

6.6Setup System - Setup Re-Alarm Delay

The re-alarm delay may be set to provide an audible, reminder alarm notification after an alarm has been silenced. The timer begins when the original alarm is silenced; the reminder alarm will occur after the specified delay time has expired. The default setting is 5 minutes. The delay time ranges from 0 to 999 minutes.

To set up the re-alarm delay:

Log In and Choose Setup System

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter (see 6.1 - Login for help).

• Enter your password at the Login screen.

• From the System and Control Menu, use the arrows ↑↓ to choose Setup System, then press Enter .

Select Setup Re-Alarm Delay

From the Setup System Menu, shown at right, use the arrows ↑↓ to choose Setup Realarm Delay and press Enter .

From the Change Realarm Delay screen, shown at right, press

and hold one of the arrow keys ↑↓ to scroll through the numbers, then press Enter .

Setup System Menu

SETUP ZN1 ZONE 1 SETUP ZN2 ZONE 2 SETUP ALARM OUTPUTS ↑↓ =NEXT =SELECT

>SETUP REALARM DELAY SETUP MAPMODE SETUP SYSTEM INFO

Change Realarm Delay

CHANGE REALARM DELAY

5

MINUTES

↑↓ =SELECT

=END

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Emerson MC68HC16Z1 Setup System Setup Re-Alarm Delay, Latched Alarms Only, Unlatched Alarms Only, Change Realarm Delay

MC68HC16Z1 specifications

The Emerson MC68HC16Z1 is a versatile microcontroller that combines power and efficiency, making it an ideal choice for various embedded applications. As part of the Motorola 68HC16 series, the MC68HC16Z1 is designed to deliver robust performance while offering extensive support for both simple and complex tasks. With its 16-bit architecture, this microcontroller is well-equipped to handle a range of functionalities, from industrial control systems to automation processes.

One of the main features of the MC68HC16Z1 is its high-performance 16-bit CPU, which operates at speeds up to 20 MHz. This allows for efficient data processing and execution of instructions, which is critical in time-sensitive applications. The microcontroller boasts a rich instruction set, including various addressing modes that enhance programming flexibility. This versatility enables developers to implement efficient algorithms tailored to their specific application needs.

Power management is another noteworthy characteristic of the MC68HC16Z1. The device supports low-power operation modes, which is essential for battery-powered applications or scenarios where energy consumption is a concern. With its capability to switch between different operational states, the microcontroller can significantly extend battery life while ensuring that performance is not compromised.

The MC68HC16Z1 also includes an integrated analog-to-digital converter (ADC) that allows for direct interaction with analog signals. This feature is particularly beneficial in applications that require sensor data acquisition. Additionally, the microcontroller provides various communication interfaces, including serial communication options like UART and SPI, facilitating seamless data transfer between devices.

In terms of memory, the MC68HC16Z1 supports a wide range of options, including both RAM and ROM, allowing for flexible storage solutions depending on the application requirements. The built-in programmability further allows for updates and modifications to the firmware, ensuring that the system can adapt to evolving project specifications.

Moreover, the microcontroller features an extensive array of I/O ports, making it capable of interfacing with various peripheral devices such as sensors, actuators, and displays. This extensive connectivity enhances its usability in a range of applications, from robotics to automotive systems.

In summary, the Emerson MC68HC16Z1 microcontroller stands out for its balanced blend of performance, low power consumption, and feature-rich design. Its 16-bit architecture, integrated ADC, versatile communication interfaces, and extensive memory options make it a go-to choice for developers looking to create effective and reliable embedded systems. Whether for industrial automation or consumer electronics, the MC68HC16Z1 continues to be a dependable and powerful component in the realm of microcontroller technology.