DYNISCO UPR800 Series Instruction Manual
Page | 39
The default alarm type for Alarm 1 is high. To check or change this value press the
FUNC
key until
nonE
and
GROUP
show on the display. Press the
t
key until
3
shows in
the upper display. Press the
FUNC
key until
A1.TYP
shows in the lower display. Using
the
u
or
t
keys, select
HI
for high level alarm,
LO
for low level alarm or
Inhib
for a low
level alarm with mask at start-up. Press the
FUNC
key to lock in the value and advance
to the next parameter. If finished, press
RESET
to return to the operating screen.
Similarly, you may configure Alarm 2 (
A2.TYP
) and if supplied, Alarm 3 (
A3.TYP
).
8.5.3 Setting the Filtering for Alarm 1:
Filtering is an electrical method of averaging the input values over a period of time to
arrive at a smoother curve. This helps to eliminate short duration transients and spikes
which can cause alarms, but which may cause false or spurious readings.
The Alarm filter default is 0.4 seconds of filtering. To change this value, press the
FUNC
key until
nonE
and
GROUP
show on the display. Press the
t
key until
2
shows in the
upper display. Press the
FUNC
key until the lower display changes to
A1.FL
. Using the
u
or
t
keys, select the amount of filtering desired, from none (
OFF
) to five seconds.
When finished, press the
FUNC
key to lock in the value and advance to the next
parameter. If finished, press
RESET
to return to the operating screen. Similarly, you may
configure Alarm 2 (
A2.FL
) and if supplied, Alarm 3 (
A3.FL
).
8.5.4 Setting the Hysteresis for Alarm:
Hysteresis is used to describe the amount that the reading must drop below the alarm
point (in a high alarm) or must rise above the alarm point (in a low alarm) to clear the
alarm condition. This helps to eliminate short duration alarms when operating near the
alarm condition. To change or view this value, press the
FUNC
key until
nonE
and
GROUP
show on the display. Press the
t
key until
4
shows in the upper display. Press
the
FUNC
key until the lower display changes to
A1.HYS
. The values for hysteresis can
range from 0.1% to 10.0%. Press the
u
or
t
keys until the upper display changes to the
desired value. Press the
FUNC
key to lock in the value and advance to the next
parameter, or press
RESET
to return to the operating screen. Similarly, you may
configure Alarm 2 (
A2.HYS
) and if supplied, Alarm 3 (
A3.HYS
).
8.5.5 Setting the Reset Mode for Alarms:
The Alarm Reset Mode determines if the alarm resets itself once the alarm condition is
been corrected, or whether the operator must press a button to reset the alarm. The
Alarm Reset Mode default is automatic reset once the alarm has cleared. To change or
view this value, press the
FUNC
key until
nonE
and
GROUP
show on the display. Press
the
t
key until
4
shows in the upper display. Press the
FUNC
key until the lower display
changes to
A1.RES
. The values for reset mode is either
Auto
for automatic reset, or
LAtCH
for manual reset. Press the
u
or
t
keys until the upper display changes to the
desired value. Press the
FUNC
key to lock in the value and advance to the next
parameter, or press
RESET
to return to the operating screen. Similarly, you may
configure Alarm 2 (
A2.RES
) and if supplied, Alarm 3 (
A3.RES
).
