ECA-DIN / Current and Voltage Alarm in Metal DIN-Style Housing (4-Wire)0 pages

ECA-DIN

Current and Voltage Alarms
February 2001

Data Sheet 9.01

Affordable Alarm Trip
The ECA DIN-style Alarm features a solid metal
housing that stands up to the continual rigors of
process control and factory automation applications.
Rugged and reliable, the 4-wire (line-powered)
ECA is the low-cost solution when alarm trip outputs
are needed to indicate high or low process conditions.
Available models accept current and voltage input
from field transmitters, transducers, and other
process instruments. When the input falls outside of
a pre-set limit (user configurable), the ECA provides
contact closure outputs ideal for indicating a high
and/or low condition via a bell, buzzer, light or other
annunciating device.
Configurable Dual Alarms—The ECA is offered
in a wide variety of dual alarm models. Choose any
combination of high or low, failsafe or non-failsafe
alarms, and the ECA will be factory-set for you.
Internal jumpers allow for changes after it arrives at
your plant.
Figure 1. ECA-DIN dimensions.
40mm
(1.57 in)

Compact durable aluminum housing snaps quickly and
securely onto standard G-type and Top Hat rails.

Features
• Independently configurable dual alarms.
Individually field-configure the ECA’s dual alarms to
low/low, high/high, low/high, or high/low output, and
failsafe or non-failsafe trip operation.
• Wide range of input options. Available models
accept common ac and dc input types.

NO1

CM1

NC1

NO2

TRIP

CM2

NC2

ECA
ALARM

A
DEAD
BAND

• RFI/EMI Protection. The ECA provides an effective barrier against the unpredictable, harmful effects
of radio frequency and electromagnetic interference.

80mm
(3.15 in)

TRIP
B
DEAD
BAND
TX

+IN

–IN

DC

DCC

GND

• Fully-adjustable trip point. A potentiometer on
the front panel will allow quick selection of trip point
values from 0-110% of input span.
138.2mm (5.44 in)
When Installed

• LED provides alarm indication. The ECA’s LED
clearly indicates when the alarm trip changes from
normal mode to alarm mode.

133.4mm (5.25 in)
When Installed

43mm
(1.69 in)

Figure 2. The ECA comes equipped with two alarm outputs, and
will power a transmitter using the –TX option.

C
L

POWER

NO1

CM1

NC1

NO2

TRIP

2-WIRE
XMITTER
109.7mm
(4.32 in)

© 2001 Moore Industries-International, Inc.

NC2

ALARM

DUAL
ALARM

DEAD
BAND

TRIP

4-20mA

B
DEAD
BAND
TX

112.7mm
(4.44 in)

CM2

ECA

A

+IN

–IN

DC

DCC

GND

RECEIVER