44
13.15 Group Relays Follow Inputs (Option GFI)
Option GFI allows the GPA and GPB group relays to follow the function of the alarm contact. If an
alarm occurs within the group the relay will change state and will remain in the alarm condition until
the associated input has returned to normal. If multiple inputs within the group are in the alarm state
all inputs must return to normal before the group relay automatically returns to normal. Individual
channels can be assigned to the GPA and GPB relays, (function F21 & F22), in the normal way and
the optional reflash function, (Function F8 & F9), can be enabled as required.
13.16 Additional Group Relay Contact (Options 2GA or 2GB)
Option 2GA or 2GB is used in applications where a second isolated contact is required to work as a
slave of either the GPA or GPB relay, (Function F21 & F22), The multi function relay (MUL) located
in the SPR module is used to provide the additional contact.
13.17 Total Group Relay (Option RTG)
Option RTG is used in applications that require two common alarm groups, (GPA and GPB), PLUS a
total group relay. The multi function relay (MUL) located in the SPR module is used to provide the
total group relay contact, which automatically operates if either the GPA or GPB relay are activated.
13.18 SPR Module (Supply-Pushbuttons-Relay Module)
All Series 725 annunciators are equipped with 24VDC Logic. If external AC/DC or DC/DC Power
supplies are required they should be capable of handling the maximum surge current, which is
typically twice the maximum load when all lamps are on steady.
13.19 Logic Power Connections
In standard applications a power supply with a single 24VDC output can be wired to the 24VDC logic
power by connecting to terminals 0V and +V on the rear of the SPR Module.
13.20 Signal Supply Voltage Connections
In standard applications the logic supply terminals OV and +V can be cross-linked to the signal
supply input terminals OVC and +VC on the SPR module to p24VDC to distribute to the
associated field contacts. (OV links to OVC and +V links to +VC)
