Dynisco UPR700, Installation And Operation Manual

Page: 37 / 72

UPR700 Microprocessor-Based Pressure/Process Indicator 37
8.6.6 S
ETTING THE
F
AILSAFE
M
ODE FOR
A
LARMS
The Alarm Failsafe Mode determines how the alarms react in the event of a power failure to the
UPR700. 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
▲
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
▼
or
▲
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 UPR700 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 UPR700, 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 UPR700, the relay will be de-energized and will then close.
8.6.7 S
ETTING THE
A
LARMS
V
ALUE
(A
LARMS
T
HRESHOLD
)
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
▼
or
▲
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) .
8.6.8 S
ETTING THE
A
LARMS
M
ASK
R
ESET
T
YPE
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
▼
or
▲
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.
8.7 M
AIN AND
S
ECONDARY
A
NALOG
O
UTPUT
(R
ETRANSMISSION
) S
ETUP
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.