10INM 725B Rev 211 16 Integral Pushbutton ModuleOn standard systems the pushbutton / programming module is located in the bottomright hand corner of the annunciator when viewed from the front.If advised at time of order the pushbutton module can be located in any alternativecell within the annunciator.1 17 PushbuttonsSix Pushbuttons:- Lamp Test, Systems Test, Mute, Ack, Reset and First Reset, areavailable to allow the user to control any of the customer selectable ISA sequences.Some users prefer to lock out specific pushbutton functions and any of the integralpushbuttons can be disabled in software.A typical example is first reset where the user prefers to use a remote key switch toreset the first up indication in place of the integral pushbutton.1 18 Watchdog Monitoring LED’sAs alarm annunciators are used in safety critical applications it is important that thatthe functions of the annunciator are also monitored and the RTK 725B is equippedwith an extensive self diagnostic facility and four green status LED bars are usedto provide dynamic monitoring of logic power, field contact supply, watchdog andcommunications states.The LED’s indicate1. PWR = 24VDC logic power to individual cards2. FC = Field contact power & contact loop resistance monitoring3. COM = Communications4. WD = Watchdog monitoring of individual cardsWhen power is initially applied to the unit the four green LED bars illuminate in arotational sequence whilst the system verifies that all of the expected cards arepresent and once the start up routine is complete the LED’s stay ON if all functionsare fully operational.
