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t- P OPERATOR INTERACTION Primary Operator Functions.The 4020 operator Notification appliances can be silenced by pressing panel maximizes the performance of primary fire alarm the ALARM SILENCE switch. Pressing the SYSTEM functions by displaying only the indications and RESET switch restores the system to the normal interaction switches required for responding to operation mode.The system tone-alert can be emergency situations (see Figure 1). programmed to resound at user specified time intervals to serve as an "active status reminder"when a trouble condition remains in the system and the audible trouble SYSTEM IS NORMAL signal has been silenced. 9:27:40 FRI 26 MAY 00 FRE PRIORITY SYSTEM SYSTEM ALARM POWER Additional Operator Function Keys. For increased ALARM ALAARRM SUPERVISORY TROUBLE SILENCED ONOfunctionality, additional operator keys are available by /\ /\ �\/- /\/\ opening the access door(see Figure 2).The ALARM ALARM SUPV TBL 1 ALARM SYSTEM FUNCTION KEYS, DISPLAY/ACTION keypad, and the ACK ACK ACK ACK J SILENCE RESET ENTRY keypad are the operator interface sections that ACKNOWLEDGE J are not essential in a fire emergency situation. These functions are presented in a self-directing manner and include: circuit/device ENABLE or DISABLE, control Figure 1. Primary Operator Functions point turn ON or OFF, DISPLAY HISTORICAL LOGS, etc. Indications.Alarm, supervisory, and trouble conditions The operator's access is determined by four passcode are indicated at the operator's panel by dedicated LEDs protected security levels. Level 1 allows routine actions and a local tone-alert.An 80 character(2 lines x 40 while level 4 is reserved for more sensitive operations characters)alphanumeric super-twist liquid crystal requiring higher level operator knowledge. Levels 2, 3, display provides information concerning point status and 4 are passcode protected to ensure proper (alarm,trouble, supervisory, etc.), type of alarm(smoke authorization for that level's control access. Passcode detector, manual station, waterflow supervisory, etc.), log-ins are stored in the history log for access review. number of alarms in the system, and a custom location Display Action and Entry Keypads.The label. Display/Action and Entry keypads allow operators (with Switch Operation.Alarm,supervisory, and trouble proper access levels)to perform controlling functions to conditions have dedicated acknowledge push-button system zones, notification appliance circuits (NACs), switches. Operation of the appropriate acknowledge and auxiliary control relays,or to gain access for switch silences the tone-alert with the LED remaining system information. DISABLE allows a specific circuit illuminated until all conditions in that category are or a specific addressable device to be disconnected restored to normal. from the system to isolate a problem. A trouble The 4020 can be programmed to perform a"global condition will occur as a reminder of the action taken. acknowledge"where a single push of the appropriate ENABLE followed by ENTER restores the circuit or acknowledge switch will silence the tone-alert for all device to active status in approximately 60 seconds. points in that condition. It can also be programmed for The display will count down the remaining time and will individual acknowledgment of each point in an warn the operator if the circuit to be enabled will cause abnormal condition, as well as their restoration. Both an alarm. operations are in accordance with the requirements of NFPA 72, the National Fire Alarm Code. I CONTROL FUNCTION KEYS 1 "-DISPLAY/ACTION-% ��ENTRY r �r ( Q F 1 F 2 F 3 I F 4 FUNCTION MENU ZONES ® ' • AUX �,. 111 •111 1 3 Ol Q/r �/ \/ �� / PREVIOUS TEST r FB .\ i 60 -MAP, [Ii]lO) SYSTEM IS NORMAL . 4 , . A \ 6 , 9:27:40 FRI 26 MAY 00 NEXT •) H "n( l FIRE PRIOR2 SYSTEM SYSTEM ALARM POWER l ARM 1`ENABLE 8 • (l )I l Jl J. l IJ i i Q ALOARM ALARMOSUPERVISORY SILENCEDQONOADDR DEL �� ,DISARM, DISABLE • 0 J . , r � r r O ALARM ALARM SUPV ' TBL ALARM SYSTEM AUTO 1`DISPLAY' ENTER CLR t ACK ( ACK ACK ACK (SILENCE, RESET 1 TIME , •` • ACKNOWLEDGE Figure 2.Additional Operator Keys S4020-0003-6 6/0 page 20.