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15
G
OLD
S
ERIES
GTC116 T
RANSMITTER
a measurable difference!
EBTRON
IG
_GTC
116_R
3
A
5.6
GTC116
‐
Alarm
Features
Analog
output
AO2
(OUT2)
can
be
assigned
to
function
as
an
alarm
output.
The
AO2
alarm
output
can
be
assigned
in
the
SETUP
menu
to
operate
as
an
average
alarm
(A02
ASGN=ALRM)
or
as
a
trouble
alarm
(AO2
ASGN=TRBL)
for
monitoring
the
status
of
the
transmitter
and
sensors.
The
AO2
ASGN=
setting
is
located
in
the
ANALOG
OUT
submenu
of
the
SETUP
menu.
The
transmitter
LCD
display
will
indicate
the
Alarm
status
for
2
seconds,
and
will
cycle
through
any
other
alarms
if
multiple
alarm
events
are
active
for
2
seconds
each,
and
then
display
the
current
actual
flow
for
2
seconds.
Detailed
set
up
of
the
Alarm
features
is
shown
in
the
Setup
menu.
5.6.1
Average
Alarm
(AO2
ASGN=ALRM)
AO2
output
is
assigned
as
an
average
airflow
alarm
output.
Useful
for
applications
where
a
low
flow
alarm
or
a
high
flow
alarm
for
operation
outside
of
a
defined
range
(setpoint
and
tolerance)
is
required.
5.6.2
Trouble
Alarm
(AO2
ASGN=TRBL)
AO2
output
is
assigned
as
a
transmitter
trouble
alarm
indicating
a
fault
within
the
transmitter
or
a
sensor
of
the
airflow
measurement
system.
The
transmitter
LCD
will
indicate
a
trouble
code
and
a
brief
description
of
the
trouble.
Contact
EBTRON
customer
service
for
additional
information
or
assistance
with
trouble
codes.
5.6.3
No
Fault
(NO
FAULT=HI)
When
AO2
output
is
assigned
as
an
alarm,
this
setting
configures
the
normal
output
condition
to
be
HI
or
LO
relative
to
the
full
scale
analog
output
level
selected
when
no
fault
condition
exists.
5.6.4
Alarm
Indications
Table
6
details
the
alarm
types,
LCD
indications
and
AO2
alarm
output
indication.
User
can
select
either
or
both
of
the
two
Average
Alarms
or
the
Trouble
Alarm.
5.6.5
Low
Alarm
‐
“LO
ALRM=
ON”
The
Low
Alarm
is
activated
when
the
average
airflow
falls
to
a
defined
level
below
the
SETPNT=
value.
The
defined
level
is
equal
to
the
SETPNT=
value
minus
the
calculated
value
of
(TOL=
value
*
SETPNT=
value).
Once
active,
the
alarm
can
be
cleared
when
the
average
airflow
rises
above
the
set
point
minus
calculated
tolerance
value.
5.6.6
High
Alarm
‐
“HI
ALRM=
ON”
The
High
Alarm
is
activated
when
the
average
airflow
rises
above
a
defined
level
above
the
SETPNT=
value.
The
defined
level
is
equal
to
the
SETPNT=
value
plus
the
calculated
value
of
(TOL=
value
*
SETPNT=
value).
Once
active,
the
alarm
can
be
cleared
when
the
average
airflow
falls
below
the
set
point
+
calculated
tolerance
value.
5.6.7
Trouble
Alarm
‐
“AO2
ASGN=TRBL”
The
Trouble
alarm
provides
trouble
codes
useful
for
isolating
setup
issues
or
problems
within
the
transmitter
or
sensors.
The
transmitter
LCD
will
indicate
TROUBLE!
regardless
of
whether
AO2
is
assigned
to
TRBLE.
The
Diagnostic
submenu
can
be
engaged
for
the
error
code
and
a
brief
description
of
the
trouble.
Contact
EBTRON
customer
service
for
information
on
troubleshooting
using
the
Trouble
error
codes.
Table
6.
GTC116
Alarm
Types
and
Notifications
ALARM OUTPUT
ASSIGNMENT TYPE
LOCAL LCD DISPLAY OF ALARM
TYPE AND NOTIFICATION
ANALOG OUTPUT 2
ALARM INDICATION
NETWORK
ALARM INDICATION
**LOW ALARM**
(Average Alarm)
Display alternates between
**LOW
ALARM**
(then any other alarms) and
actual reading for 2 seconds each.
**HIGH ALARM**
(Average Alarm)
Display alternates between
**HIGH
ALARM**
(then any other alarms) and
actual reading for 2 seconds each.
TROUBLE !
(Trouble Alarm)
Display indicates
TROUBLE !
(Refer to DIAGNOSTIC menu to obtain a
brief description of the error and any
other alarms).
On alarm or trouble, OUT2 is
active high (or active low)
relative to the full scale
maximum (or minimum)
analog value as determined
by the SETUP Menu “NO
FAULT=” selection. Individual
sensor velocities can be
viewed using the Diagnostics
submenu.
Alarm Status is available at
BACnet Objects and
Modbus Registers. Refer to
BACnet Objects List and
Modbus Register Map for
additional detail.
