Omega CNiS16 Manuale Utente

Pagina di 72
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
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