Dwyer 8600 User Manual
Page 32
949-1277-3
Page 32
December, 1998
Warning: If inhibit is on and a power failure occurs
during a high alarm, restoration of power will not cause
the alarm to occur if the process value does not first
drop below the high alarm setting. Do not use the Alarm
Inhibit feature if a hazard is created by this action. Be
sure to test all combinations of high and low alarm
inhibit actions before placing control into operation.
The following menu items apply only to the alarm.
AL1
Alarm 1 function: Select OFF, Lo, Hi, HiLo, or Evnt.
OFF
Alarm 1 is disabled. No Alarm 1 menu items appear in
the Secondary or Secure menus.
Lo
Low Alarm Only. A1Lo appears in the Secondary Menu.
Hi
High Alarm Only. A1Hi appears in the Secondary Menu.
HiLo
High and Low Alarms. Both A1Lo and A1Hi appear in
the Secondary Menu, and share the same Alarm 1 Relay
output.
Evnt
Alarm 1 is controlled by the Ramp/Soak program func-
tion. See pages 10-13, and 20 (#A1) for further informa-
tion.
If AL1 is set to OFF, go to AL2 below. If AL1 is set to Evnt, go to A1St below.
A1t
Alarm 1 Type: Select AbS or dE
AbS
Absolute Alarm that may be set anywhere within the
values of SCAL and SCAH and is independent of SP1.
dE
Deviation Alarm that may be set as an offset from SP1.
As SP1 is changed the Alarm Point will track with SP1.
A deviation alarm will also track any active ramp or soak
set point.
A1rE
Alarm 1 Reset: Select OnOF or Hold.
OnOF
Automatic Reset.
Hold
Manual Reset. Reset (acknowledge) by simultaneously
pressing the INDEX & DOWN ARROW keys for 5
seconds.
A1Pi
Alarm 1 Power Interrupt: Select On or OFF.
On
Alarm Power Interrupt is On.
OFF
Alarm Power Interrupt is OFF.
A1iH
Alarm 1 Inhibit: Select On or OFF.
On
Alarm Inhibit is On. Alarm action is suspended until the
process value first enters a non-alarm condition.
OFF
Alarm Inhibit is OFF.
A1St
Alarm 1 Output State: Select CLOS or OPEn.