NEX7250 Zone 2 Annunciator
19
Integral Horn Volume Adjustment Location
CAL
FUNCTION
STATUS
Internal audible
volume adjustment
Increase
5.14 Remote Pushbutton Inputs
Because the NEX7250 has to be mounted in an IP rated enclosure these pushbuttons will not be
accessible in the Zone 2 area. Remote pushbuttons can be connected to the P725 SPR module
either in place of or in addition to the integral pushbuttons or to allow multiple annunciators to share
common pushbuttons for example a common mute pushbutton mounted in the operator desk
console.
The Pushbuttons should be of the Normally Open, Momentary type and it is recommended that if
long cable runs are required through electrically noisy environments a screened cable is used with
the screen connected to a suitable instrument earth at one end only.
If the pushbuttons are to be located in a classified hazardous area they must be certified for use in
that area. We recommend that Pushbuttons are pre mounted or supplied as part of the NEX7250
equipment.
Please note:- When the annunciator is in the configuration mode with the CONF switch in the ON
position all integral or remote pushbutton inputs are disabled until the unit has been returned to its
normal operating state.
