Man-1128_K25400_series_Power_Supply_Manual_15
Page
6
of
20
Pin 1
J5
3.4 Connecting to the Outputs
3.4.1 Load Connections (Terminal Block)
On K25000 units, two terminals are provided for
connection of the load. +24V DC and DC RETURN.
The load should be connected using wire rated for at
least 10 Amps continuous.
Care must be taken to connect the polarity of the
load the correct way around, + on the PSU to + on
the load and - on the PSU to - on the load.
Note: Maximum cable size is 2.5mm
A Wurth 742 711 31, clip on ferrite must be
fitted to the load cable before it exits the
enclosure. This is supplied.
3.4.2 Load Connections (Ribbon Cable)
An alternative method of connecting to the power supply is via a 14-way ribbon cable.
The ribbon cable must not leave the enclosure
A standard latching ribbon cable header is provided on the board, which may be used to connect to the load, and fault
signals. (See below.)
When used in the K25000 series boxed power supplies, the load connection terminals (detailed in 3.4.1 above) must
be used as the primary power connection.
The KD25400 series (dual output) power supplies use the ribbon cable connection to provide additional power and
fault connections to the dual output interface card.
When the power supply unit is integrated into some other Kentec products (for example the Syncro fire panel) the
ribbon connection may be the only power and fault connection between the power supply and the panel.
Pin 1 = Negative
Pin 2 = Negative
Pin 3 = Negative
Pin 3 = Negative
Pin 5 = Positive 24V
Pin 6 = Positive 24V
Pin 7 = Positive 24V
Pin 8 = Positive 24V
Pin 9 = Battery disconnected (switched –ve 100 milliamps max)
Pin 10 = Mains failed (switched –ve 100 milliamps max)
Pin 11 = Battery low/High impedance (switched –ve 100 milliamps max)
Pin 12 = Earth fault (switched –ve 100 milliamps max)
Pin 13 = Charger fault (switched –ve 100 milliamps max)
J5
24V
DC
DC
RTN
POSITIVE
NEGATIVE
