EMERGENCY OPERATING
INSTRUCTIONS
OPERATOR
INTERFACE
PANEL
I
I
I
J
1
I
I
Figure 1
NDU Operator Interface Panel
(Panel Access Door Closed)
Audible and visual indication are provided to indicate abnormal conditions, when they exist throughout the network.
The 2500 NDU Operator Interface Panel, hereinafter called the interface panel, shows the following under normal
conditions:
l
Green “POWER ON” LED ON (indicating that AC power is applied)
l
All other interface panel indications OFF
l
Alphanumeric display states that the system is normal, as shown below.
I
SYSTEM IS NORMAL
08:23:43
MON 7 DEC 92
Abnormal conditions are indicated on the interface panel by flashing the alarm, supervisory, or trouble LED and
sounding the tone-alert. The alphanumeric display provides information as to the point status (alarm, supervisory,
and trouble), type of alarm (smoke detector, pull station etc.), number of abnormal conditions in the system, and a
custom label. Alarm, supervisory, and trouble conditions each have their respective acknowledge key. Pressing the
appropriate acknowledge key will silence the tone-alert. However, the LED indicating the abnormal condition
remains illuminated until all initiating devices are restored to normal.
If your system is configured with the CRT or printer option, point status is also displayed on these devices. The CRT
option controls various system functions. It can acknowledge system status changes, silence alarm signals, and
perform system reset procedures.
When an initiating device (monitor point) senses an Alarm Condition (heat, smoke, manual activation, etc.),
notification appliances (signals) and the tone-alert sounds, and the SYSTEM ALARM LED turns ON and flashes,
indicating that an alarm condition is present. In addition, depending on the nature of the alarm condition, relays trip,
the city circuit is activated, and various programmed events occur.
When an initiating device senses a Supervisory Service Condition (tamper valve off normal, generator status, etc.),
programmed notification appliances and the tone-alert sounds, the SUPERVISORY SERVICE LED on the interface
panel turns ON and flashes, the city circuit may be activated (if required by local codes), and various programmed
events occur.
3
To Next Page
Loading...
Need help?
General
