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
"