
PRESYS
Instruments
DMY-2030-TOT
Light
Operation
Page 21
Once the alarm configuration is established (CONF option), it is possible to
view or change only the values of alarm setpoints. Press the UP key while CONF
option is shown, in order to have a quick access to the setpoints of all alarms already
configured. The mnemonics of alarm setpoints have a code which is explained
through the two following examples:
S1.H.r1
High-alarm setpoint associated to relay 1.
S1.L.L1
Low-alarm setpoint associated to led 1.
LATCHED - configures the relay to be deactivated only after the end of the alarm
condition and the operator has performed the acknowledge of this alarm. The
acknowledgment of the alarm condition is performed within the normal operation mode
by pressing the UP key until it is shown the mnemonic corresponding to the relay one is
looking for. Note that it will be shown only the relays configured with latch operation
which require acknowledgment in order to return to normal state. After reaching the relay,
press the ENTER key. If there is no alarm condition for this relay, it will change its state.
Continue pressing the UP key to return to operation mode.
DELAY - causes the relay to be activated only after a certain time interval defined
by the user. Figure 14 below illustrates the delay operation for a high-alarm.
Fig. 14 - Relay with delay
SAFE - provides safety to relays. The safety condition means the relays are
powered on when the instrument is on and there is no alarm condition, and the relays are
powered off when in alarm condition or in case of power failure.
Note: When replacing an analog output module (see level 4 - Output) by
a relay module in the same position on the Power Supply Board, disable the
output before installing the relay, otherwise it will be activated and deactivated
continuously.
presys