Omega CNI8, Manual

Page: 31 / 72

27
CONTACT CLOSURE SUBMENU:
Press d 11) Display flashes previous selection. Press
b
to N.ç. Normally
Closed or
N.o.
Normally Open.
Press
d
12) Display shows
STRD
stored message momentarily and then
advances to AçTV only if it was changed, otherwise press a to
advance to
AçTV
Active Submenu.
Normally Open: If this feature is selected, then the relay is "energized" only
when an alarm condition occurs.
Normally Closed: "Fail Safe" Mode. Relay is energized under "normal"
conditions and becomes de-energized during alarm or power failure.
ACTIVE SUBMENU:
Press d 13) Display flashes previous selection. Press b to scroll through
the available selections:
ABoV
Above,
BELo
Below,
HI.Lo
HI/Low and
BAND
Band. (Band is active if
_DEV
Deviation was
selected).
Press
d
14) Display shows
STRD
stored message momentarily and then
advances to
A.P.oN
only if it was changed, otherwise press
a
to
advance to
A.P.oN
Alarm Enable/Disable at Power On
Submenu.
Above : Alarm 1 condition triggered when the process variable is greater than the
Alarm Hi Value (Low value ignored).
Below: Alarm 1 condition triggered when the process variable is less than the
Alarm Low Value (Hi value ignored).
Hi/Low: Alarm 1 condition triggered when the process variable is less than the
Alarm Low Value or above the Hi Value.
Band: Alarm 1 condition triggered when the process variable is above or below
the "band" set around Setpoint 1. Band equals Hi Value (Low Value ignored). A
"band" is set around the Setpoint by the instrument only in the "Deviation" Mode.
The Band for the AL 1 would be following the Setpoint 1 value
The Band for the AL 2 would be following the Setpoint 2 value.
The Band or the Deviation Value should be entered under:
AL1 High (if they want Alarm 1)
AL2 High (if they want Alarm 2)
AL Low value is ignored in the Band mode.
Example : if customer requires a Deviation Value of ±10 degrees around a
setpoint (using Output 2 as alarm)
Output 2: disabled (this enables the Alarm 2)
Alarm 2: - Deviation
Contact Closure type: Deviation---Band
AL2 High: 10 (Band they want around Setpoint 2)
Then the Band Value is to be entered under AL2 HI: 10 not 80+10 = 90