Eaton RTK 725B range - Systems Using Internal Power Cards; SI;O Card Versions

INM 725B Rev 21
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3.3 Systems using Internal Power Cards
When internal power supply cards are used the logic voltage is internally connected and +V is
used to provide a 1A 24VDC output for use as a signal supply voltage.
WARNING !
Any connected equipment powered by the 24Vdc output (e.g. remote
pushbuttons, sounders, etc.) MUST be located in the same enclosure as the
RTK 725B/C annunciator.
The annunciator must be powered down before working on any
connected equipment.
Fuse F1 (5 x 20 mm 1A), is provided on the underside of the power input card to protect the
24VDC output.
Fuses
FU-1A-002 - 5 x 20mm 1A signal supply fuse
FU-1A-002 - 5 x 20mm 1A - 24vdc output protection fuse
3.4 SI/O Card Versions
Part No Description
CB6648POP2 Used on standard versions with integral power supplies
CB6648POP4 Used on versions with RS485 communications & integral power supplies
REAR VIEW
OV OV +V+V 0VC +VC
Rx
F1 F2
Tx
24VDC OUTPUT
(+)
(OV)
F1
UNDERSIDE VIEW OF
POWER INPUT CARD
24VDC
OUTPUT
FUSE
F2
5A / T 1A / F
1A / F
SIGNAL
SUPPLY
FUSE