System and Control Options

6.5Setup System - Setup Alarm Outputs

The Liqui-tect panel has six alarm outputs—three types for each zone:

Digital alarm output for cable break detection - a change in state indicates a broken cable or con- tamination on the cable

Digital alarm output for leak detection - a change in state indicates a leak on the cable

Analog alarm output for 4-20mA - the signal may indicate normal operation, the location of a leak, a cable break or contamination

These outputs may have a wide variety of Liebert or other manufacturers’ equipment connected to receive alarm notification.

To configure all alarm outputs:

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 Alarm Outputs

• From the Setup System Menu, shown at right, use the arrows ↑↓ to choose Setup Alarm Outputs and press Enter .

Table 9 shows alarm output features and their default settings: you may specify the maximum cable length of analog alarm outputs, define digital alarm output relays as Normally Open or Closed, and set up alarms as Latched or Unlatched.

To change the default settings, use the steps following Table 9.

Table 9

Default settings - alarm outputs

 

 

 

 

 

 

Feature

Default

Other Options

 

 

 

LONGEST CABLE LENGTH

0-1000 ft. (0-304.8m)

Up to 5000 ft. (1524m)

LEAK & FAULT RELAYS:

NO (Normally Open)

NC (Normally Closed)

NORMALLY OPEN/CLOSED

LEAK & FAULT ALARM:

Y (Latched)

N (Unlatched)

LATCHED/UNLATCHED

 

 

Setup System Menu

SETUP ZN1 ZONE 1

SETUP ZN2 ZONE 2

>SETUP ALARM OUTPUTS

↑↓ =NEXT =SELECT

SETUP REALARM DELAY SETUP MAPMODE SETUP SYSTEM INFO

Maximum Cable Length

SELECT LONGEST

CABLE CONNECTED

> 0-500FT

(0-152.4 M)

↑↓ =NEXT

=SELECT

0-1000FT (0-304.8M)

0-1500FT (0-472.2M)

0-2000FT (0-609.6M)

0-2500FT (0-762.0M)

0-3000FT (0-914.4M)

0-4000FT(0-1219.2M)

0-5000FT(0-1524.0M)

Normally Open / Closed

ARE LEAK

& FAULT

RELAYS NORMAL OPEN

OR NORMAL CLOSED? NO

↑↓ =NO/NC

 

 

=END

 

 

 

 

 

 

 

 

Latched / Unlatched

IS LEAK & FAULT ALARM LATCHED? Y

↑↓ =Y/N

=END

30

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Emerson MC68HC16Z1 user manual Setup System Setup Alarm Outputs

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.