www.miinet.com
Moore Industries-International, Inc.
- 7 -
User’s Manual
225-748-01L
February 2017
Programmable Current/Voltage Safety Trip Alarm
STA
HLPRG
SEC
TION 1
Section 1 - Introduction
This is the user’s manual for Moore Industries’ STA (HLPRG): Programmable Current/Voltage
Safety Trip Alarm.
The Moore Industries’ Safety Trip Alarm (STA) is designed and manufactured to provide a high
level of availability for safety critical applications and for use as a component part of a safety
instrumented system.
Overview
This manual contains all of the information needed to configure, install, operate and maintain this
product. When the STA is used in a SIL rated safety application (as defined by IEC 61508), the
Safety Instrumented Systems section of this manual must be read and followed in order for the
STA to meet its IEC 61508 certification requirements.
Description
Moore Industries’ STA (HLPRG) is a Programmable Current/Voltage Safety Trip Alarm.
The STA monitors a process variable and provides two fully user-configurable contact closure
outputs that can be individually programmed to trip whenever the input falls outside a user-set,
high or low trip point. It also has one fault alarm output which is triggered by a self-diagnosed
failure of the input or the STA itself. The STA is typically used to activate a warning light, bell
or buzzer; or to initiate a system shutdown. Thus, the instrument acts as a simple, but highly
reliable and effective means of monitoring and safe-guarding a process.
The STA may be configured using front panel push buttons and/or Moore Industries’ PC
Configuration Software. A large 5-digit display shows menu prompts during push button
configuration and process variable and status messages during normal operation.
The STA also has a password security feature to limit access to the front panel configuration.
Refer to Security Settings in the Installation and Wiring Section for more details.
All STA diagnostic faults are latching and input faults can be configured to latch or not latch.
User configuration faults will clear automatically once the configuration is valid. If input faults are
latched, these can be cleared by the “RESET FAULT” menu and the Manual Reset (MR) terminal
can also be configured to reset both latched Trip Alarms and input faults. Unit faults such as
internal diagnostics will always latch the Fault Alarm and the unit must be power cycled to clear
the alarm.
Note:
For STA units with firmware versions 1.5 and earlier, the fault alarm has no configuration
options, is always latched and cannot be reset by Manual Reset (MR).
