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SIMPLEX 4120 NETWORK FIRE INDICATOR PANEL
Page 3
OPERATOR MANUAL
The 4120 can be programmed to perform a "global acknowledge" where a single key press
of the appropriate acknowledge button will silence the piezo for all points in that condition.
The 4120 can also be programmed for individual acknowledgment of each point in an
abnormal condition as well as its restoration.
After an alarm condition, the system can be restored to normal operating mode by
depressing the " System Reset" button. To serve as a "fault reminder" when a fault condition
remains in the system and audible fault signal has been silenced, the piezo will resound at a
specified time interval to alert the user that the fault condition remains and needs
rectification.
The operator's interface door provides easy access to additional operator controls and LED
indicators. The depth of the operator's interaction is determined by four Security Access
levels.
Level 1 is the lowest level and allows the operator to perform routine actions. Level 4 on the
other hand is the highest level and only provides for the most sensitive operations by an
authorised service technician. Each of these access levels is governed by a passcode
chosen at order entry or as edited by a Simplex service technician.
The "FUNCTION KEYS", "DISPLAY/ACTION" keypad, and the "ENTRY" keypad are the
operator interface sections which provide, in a self -directing manner, operations non-
essential in a fire emergency situation.
These operations include items such "ISOLATE" or "DE-ISOLATE" a circuit, turn a control
point "ON" or "OFF", and menu items such as "SET TIME AND DATE", "DISPLAY
HISTORICAL LOGS", etc. Programmable "CONTROL" keys and their associated LEDs can
be programmed to perform a variety of functions and can be individually passcode
protected. These "CONTROL" keys are typically used for alarm and fault test, ACF Isolate,
Brigade test and battery test functions.
1.2.2 2500 Network Display Unit
The Simplex 2500 Network Display Unit (NDU) is a network annunciator and manual
system/point controller for a 4120 Network. The NDU provides alphanumeric annunciation
for up to 2,500 network points and/or point lists and can be programmed to function as the
network master controller for Silence, Acknowledge and System Reset.
Standard features include an alphanumeric display exactly like the 4100 Fire Alarm Control
Panel and more memory to achieve 2,500 point capacity.
The increased memory size provides 600 alarm and 600 fault event history logs, twice the
size of any other 4120 or 4100 model. The 2500 NDU can drive up to 31 serial LCD
Annunciators on one optional Remote Unit interface (RUI) card. In addition, the NDU can
have up to five RS-232 ports for printers and CRT/Keyboards.
Document No: 4100-M004
June 1997
Issue 1.0
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