DYNISCO UPR800 Series Instruction Manual
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8.5.6 Setting the Failsafe Mode for Alarms:
The Alarm Failsafe Mode determines how the alarms react in the event of a power failure
to the UPR800. In the failsafe mode, the alarms will activate in the event of power loss.
In non-failsafe mode they
cannot
activate in the event of power loss. The Alarm failsafe
mode default is failsafe mode. 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.FSM
. The options for
failsafe mode are either
FS
for failsafe mode, or
nFS
for non-failsafe mode. 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.FSM
) and if supplied, Alarm 3
(
A3.FSM
).
Please note that the wiring must be considered: For failsafe operation the alarm contacts
must be wired differently to have operation as expected. This is because the UPR800
holds the contact relay in an energized state during normal operation. In the event of an
alarm condition or the loss of power to the UPR800, the relay will be de-energized and
will then open. The same holds true for a NC contact. It will be held OPEN during normal
operation. In the event of an alarm condition or the loss of power to the UPR800, the
relay will be de-energized and will then close.
8.5.7 Setting the Alarms Value (Alarms Threshold):
The Alarm 1Threshold Values, is the value beyond which the Alarm will activate (i.e. the
threshold). Alarm 1 is set in the same engineering units that the Full Scale Value uses.
To change or view this value when in the operating screen, press the
FUNC
key, when in
the main screen, and the lower display will change to
AL1
with the threshold value in the
upper display. 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
(
AL2
) and if supplied, Alarm 3 (
AL3
).
8.5.8 Setting the Alarms Mask Reset Type:
The Alarm 1 Mask Reset may only be used on alarms configured as inhibited Low Alarms
on startup. It prevents the alarm from activating (masks the alarm) until the value of the
primary input exceeds the alarm value. To change or view this value when in the
operating screen, press the
FUNC
key until the lower display changes to
AL.MSK
with
OFF
in the upper display. Press the
u
or
t
keys until the upper display changes to
rESEt
. Press the
FUNC
key to lock in the value and advance to the next parameter, or
press
RESET
to return to the op screen. You may similarly configure Alarm 2 and if
supplied, Alarm 3.
8.6 Main Analog Output Setup
This set of parameters will only be available for units that include an active secondary
input (
SI.TYP
other than
OFF
); otherwise it defaults to the primary input.
