Table of Contents
Advertisement
Operation
instructions
The alarm annunciator unit is very easy to use.
In principle the use of the annunciator is con-
trolled from the "Reset and test push-button"
only. However, when parameters are selected
FAULT
ON
Fig. 26. Front panel indicators and event register push-buttons for the annunciator unit SACO 16D3.
During a normal process condition, when no
alarms are active and when all acknowledges/
resets have been performed, the only indicator
glowing on the front panel is the ON LED.
When alarm signals are received, the alarm
channels starts and the visual LED alarm indica-
tors are activated according to the selected se-
quence programs. At the same time the first
alarm channel number and a letter A in front of
it is to be seen in the display. The SILENCE/
ACKNOWLEDGE/RESET LEDs indicate the
next reset function at hand.
and altered and when stored information is read
out from the event register, the four push-
buttons in the lower right hand corner are used.
Power-on and fail indicators
First-out display and event register read-out display
Silence/Acknowledge/Reset sequence indicators
Reset and test push-button
Window with channel legend and visual indicator
Event register scanning and read-out push-button
The other push-buttons and indicators
are used for programming
The reset functions are:
SILENCE
= stops the sound of the
audible device
ACKNOWLEDGE = indicates recognition of
an alarm
RESET
= returns the alarm chan-
nel to normal state
The SlLENCE and ACKNOWLEDGE se-
quence actions can also be carried out with
external push-buttons. The external push-but-
tons are wired to the terminals AUD. RESET
(17) and RESET (16) of the annunciator unit.
25
Advertisement
Table of Contents
