CPA - PC-Programmable Alarm (4-Wire)0 pages

CPA

PC-Programmable Current/Voltage
and RTD/Thermocouple Limit Alarm Trips
June 2009

Description

The universal CPA PC-Programmable Alarms provide
on/off control, warn of unwanted process conditions,
and provide emergency shutdown. Very economical,
they accept a direct signal input from transmitters,
temperature sensors, and a wide array of other
monitoring and control devices:
t •tCurrent and Voltage Signals
t •t23 RTD Types
t •t9 Thermocouple Types
t •tResistance and Potentiometer Devices
t •tDirect Millivolt Sources
Single or Dual Alarm Trip Outputs
The 4-wire (line/mains-powered) CPA provides one
or two alarm relay outputs when a monitored process
variable falls outside of user-set high and/or low
limits. This is typically used to activate a warning
light, annunciator, bell, or shutdown system.

Figure 1. Available CPA models deliver versatile and
programmable input and output choices.
Programmable
Input
mA
V
RTD
T/C
ohms
mV

CPA

COMPUTER
PROGRAMMABLE
ALARM

INPUT
READY
ALARM 1
ALARM 2

COM

Programmable
Output
Single Relay
Dual Relay
(Trip Points,
High Alarm, Low
Alarm, Failsafe,
Non-Failsafe,
Normally Open,
Normally Closed)
Analog Output
(optional)

The CPA PC-Programmable Alarm features a metal, RFI
resistant housing that snaps onto standard DIN-style rails.

Features

•t Universal plant standard. There’s no need to
stock dozens of different fixed range alarm trips.
•t 20-bit input resolution. Delivers industrybest digital accuracy for both sensor (RTD and
thermocouple) and analog (current/voltage) inputs.
•t PC-programmable with Windows® software.
From a single screen, you can choose, and then
view to confirm, all of your application specific
operating parameters from a PC.
•t Long-term stability. Provides up to 5 years
between scheduled calibrations.
•t Combined alarm trip and transmitter. The
analog output (-AO) option reduces costs and
installation time when both alarm and transmitter
functions are needed at the same location.
•t Isolated and RFI/EMI protection. Delivers
superior protection against the effects of ground
loops and plant noise, and radio frequency and
electromagnetic interference.t
Certifications*

4-Wire (Line/Mains) Powered
24Vdc, 117Vac, 230Vac

2009 Moore Industries-International, Inc.
225-710-01B

CE Conformant – EMC Directive 89/336/EEC
EN 61326; Low Voltage Directive 73/23/EEC EN 61010

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