Digitrax PM42 Manuale - Pagina 11
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5.1 PM42 Trip Current
The PM42 factory default for trip current is set at 3 amps. This is the current
that all Digitrax boosters can provide briefly under fault conditions with ade-
quate track wiring. A 3 amp trip current will work for most boosters and lay-
outs. If you have many locomotives running or other large power draws in a
sub-district or you need to use currents higher than 3 amps, you can modify the
current threshold for all four sections of the PM42 to any value between 1.5
amps and 12 amps, in increments of approximately 1.5 amps. Simply change
option switches 01, 02 and 09 according to TABLE III to adjust PM42's trip
current for optimal operation on your layout.
TABLE III: PM42 Trip Current Setting OpSws
OpSw
OpSw 01
(OpSw 09 = t)
OpSw 02
(OpSw 09 = t)
Trip Current
(approx.)
OpSw 09
Trip Current
(approx.)
Setting
Setting
t
c
t
t
3 amps
6 amps
c
c
1.5 amps
4.5 amps
10
Setting
Setting
t
c
c
c
9 amps
12 amps
c
c
7.5 amps
10.5 amps