Hanna Instruments HI520 - HI520 Events Management System

107 HI520 Events Management System
20. HI520 EVENTS MANAGEMENT SYSTEM
HI520 has an intuitive and user friendly events management system that allows for quick and easy event ‑source
identification.
Status and Hold LEDs located on the right side of the controller’s front panel as well as Alarm and Relay
LEDs located on the left side, notify the instrument status.
The HI520 LED notification system is shared across the two independent control loops that run simultaneously.
It is possible to have alarm and warning notifications on one channel and active, running status on the other.
LED LED notification light HI520 status as signaled by LED notification light
Status
Green (
CC ) Measure mode
Yellow (
CC )* Warning
Red (
CC )** Errors or Alarms
Hold Yellow (
CC ) Requires user attention
Alarm Red (
CC ) Alarm relay ON
Relay Blue (
CC ) Active status
* Controller requires user attention
** Controller requires specialized technical assistance
ALARMS, WARNINGS, ERRORS
Alarms
An alarm is an event generated when programmed alarm conditions have been met.
HI520 alarm system is made of:
•
Default alarms: generated during a measurement cycle when measured values have exceeded or dropped
below probe ranges limits
•
Configured alarms: generated when measured values have exceeded values configured for each parameter
and Temperature (in Setup, Channel, Alarm Settings)
•
Acoustic signal (beep/buzz): when enabled in General setup, it is generated each time an alarm is
triggered. The signal can be stopped by pressing any key.
Warnings
A warning is an event generated when erroneous conditions appear; and when measured values or parameter
values, configured in the main Menu, are outside the expected range.
Errors
An error is a critical event that requires Hanna Instruments
®
technical support.
Note: All alarm, warning, and error events are logged in the event log.