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Presys Instruments
3.0 - Operation
3.1 - Normal operation
DMY-2015 Indicator has two modes of operation: normal mode and
configuration mode.
During normal operation, the Indicator monitors the inputs, verifies alarm
conditions and activates the alarm outputs when necessary.
Configuration mode is used to select and configure all the Indicator
parameters.
The normal operation mode, in which the Indicator is to be found most of the
time, is called level zero. In this level, the four front panel keys have the following
functions:
ENTER
UP
DOWN
ACK
(*) In order to view the monitored variable, continue to press the ACK key. In
case there are no activated relays or leds with LATCHED function enabled, or relays
which accept reset, the No.Ac. message will be shown.
3.2 - Configuration
In order to access configuration mode the operator is required to provide a
password which avoids a non-authorized person to change any critical parameters of
the process.
So, when ENTER is pressed within the normal operation mode, one of the
following events can happen, depending on the current configuration:
i) To access directly level 1 (GENERAL) of configuration mode, which indicates the
instrument was not configured with a password system.
Operation
Página 18
Key
changes level zero to level 1 or asks for the
password, when configured.
Key
changes the channel or totalization (when enabled
for a linear input) shown in the display in increasing
order.
Key
changes the channel or totalization (when enabled
for a linear input) shown in the display in decreasing
order.
Key
When showing the indication of a channel, it
presents
acknowledgment or accept reset to return to normal
state, besides the leds turned on which have the
LATCHED function enabled (*). It applies Reset to
the totalization presented in the display (when this
function is enabled for use in the operation mode).
the
alarm
outputs
DMY - 2015
which
require
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