6-16
Connections to relays and opto coupler outputs
There are 16 outputs of this kind: 4 switching relays, 4 closing relays and 8 opto couplers. The
function of each relay/opto output can be programmed into the Sig. Distributor, using the
commands and procedures defined in section 5, "Setting up Procedure".
Note! The switching relays K1-K4 are not intended for distance pulse function. First choice for
pulse function is opto O1-O8, second K5-K8. Warranty cannot be claimed if K1, K2, K3 or K4
are used for distance pulse function.
Switching relays (NC=normally closed contact, CM=common, NO=normally open contact)
Rela
# Term# Default si
nal
K1 20:NC 20:CM 20:NO No NMEA Lo
1 Main = de-ener
ized
K2 21:NC 21:CM 21:NO No NMEA Lo
1 Redundanc
= de-ener
ized
K3 22:NC 22:CM 22:NO STW Astern = ener
ized
K4 23:NC 23:CM 23:NO ESD Alarm = de-ener
ized
When energized, the corresponding LED will be lit and CM-NO will be electrically connected.
In case of power fail of the Sig. Distributor, position NC-CM for the relays K1-K4 is valid.
The relays K1 and K2 supervise the NMEA in 1 and 5. The relays will be de-energized for no
NMEA activity.
Relay K3 will be energised when STW indicates astern speed.
Relay K4 will be de-energized when an Echo sounder alarm occurs ($SDALR,,,A,V,) until
acknowledged ($SDALR,,,A,A,).
Relay K4 can therefore be used as a contact for an external ESD buzzer.
If Opto in 1 is activated, K4 will be energized (external ESD buzzer mute).
If no ESD is connected to the Sig. Distributor the relay is de-energized.
Closing relays (NO=normally open contact, CM=common)
Rela
# Term# Default si
nal
K5 24:CM 24:NO Speed throu
h water lon
itudinal 200p/nm, STW
K6 25:CM 25:NO Speed throu
h water lon
itudinal 200p/nm, STW
K7 26:CM 26:NO Speed over
round resultin
200p/nm, BTR
K8 27:CM 27:NO Speed over
round resultin
200p/nm, BTR
If no transversal SOG (BTT) is available, all BTR outputs will be calculated as if BTT=0, thus
BTR outputs will be equal to BTL. This is applicable for analogue out, pulse relays and opto-
couplers.
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