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A Current Protection Device (CPD) should be used on all positive (+) leads.
This CPD (fuse, circuit breaker etc.) should match the corresponding boosters’
current rating.
Power to the DB210/DB220 should not be rapidly cycled ON-OFF-ON. When
power to the unit is switched off, wait 30 seconds before turning on the power
again.
3.1 General Return Wire
A booster return wire should be connected to the General Return(GR or
GROUND) pin 4 terminal on all non-Opto boosters. The General Return wire
should be s
ized to conduct full track current
to the terminal on all non-opto
boosters. The purpose of this general return is to carry transient booster cur-
rents safely between power districts and prevent damage to LocoNet connec-
tors. This overall layout general return may optionally be connected to safety
ground to protect from stray voltages.
See Figure 1
3.2 Sharing a power supply between multiple boosters
Special wiring considerations must be followed when sharing a high amperage
DC power supply, such as the PS2012, between multiple boosters/command
stations. In the situation where multiple boosters share a common DC power
supply the positive (+) DC power supply connection will be made to pin7 via
CPD’s on all units that will be sharing the DC supply.
On Advanced DB210/220 boosters this will be the te 8A or + 16A.
On Legacy boosters this will be the left-most terminal labeled “POWER IN”.
The Negative(-) DC power supply lead must connected to pin4 General Return
(GR or GROUND) terminals via the general return wire on all non-opto boost-
ers.
3.3 Powering the DB210 OPTO
Every DB210 OPTO booster must be powered by a separate DC power
supply.
Thus a DB210 OPTO connected on a Common Rail layout cannot share a
power supply with any other Booster or Command Station. All DB210 OPTO
boosters must not have any connection to the general return (GR or GROUND)
pin 4. This booster’s LocoNet connections are specially isolated for Common
Rail operation.
