Digitrax PM74 User manual
© 2022 Digitrax, Inc. www.digitrax.com— 1 —
Features:
▪4 Power manager sub-districts (or DS sections), similar to PM42.
▪
▪Each DS has Occupancy and Transponding detection capability.
▪Occupancy usable by LocoNet compatible signal systems and e.g. PC-
based track state monitoring.
▪
CV read/write programming on compatible Digitrax systems.
▪
▪
▪
▪
▪
programming.
▪
▪
▪
▪
Parts List
1.0 PM74 Initial Setup.
1.
2.
3.
4.
PM74
Complete Train Control
Power Manager with Occupancy and Tran-
sponding detection for 4 sub-districts.
© 2022 Digitrax, Inc. www.digitrax.com— 2 —
DS1 DS2 DS3 DS4
LEFT
A
B
RIGHT
A
B
LT5
remote
status
GL G1 G2 G3 G4 GR
DC in
12V
Complete Train Control
PM74
OPS ID
1AC
1A0
1BC1BC
1B0
2AC
2A0
2BC
2B0
3AC
3A0
3BC
3B0
4AC
4A0
4BC
4B0
RA RB
L1
LocoNet
Figure 1: PM74 Wire
Examples BOOSTER
ZA
FA
ZB
FB
ZN L2 L3 L4
© 2022 Digitrax, Inc. www.digitrax.com— 3 —
-
tion indicated on just the status LEDS.
-
This provides initial verication that your PM74 working on LocoNet.
You are now ready to customize your track wiring as detailed in the
next sections.
2.0 Best Practice DS Short Circuit protection:
1.
2. -
double gap pairs
occur on either rails and feeders connected to DS1.
3. all the rails and feeder wiring to a
short-circuit during installation. The e.g. DS1 relay will click repeatedly
4.
DS1, e.g. a box car with a resistor wheel set. The status led L1 will light
that DS1 is occupied and a transponder has been detected. The decoder
address and DS location is reported onto LocoNet.
© 2022 Digitrax, Inc. www.digitrax.com— 4 —
the DCC packets are mutilated.
8.
relay state, not the Occupancy and Transponding state displayed when
-
3.0 Auto-reverse DS connection:
1.
switch setup.
2.
3. and-
that gap.
4.
matched.
4.0 Alternate Short Circuit protection:
1.
2.
are not double and only
3.
power to all tracks on the booster.
4.
best choice.
© 2022 Digitrax, Inc. www.digitrax.com
5.0 PM74 Options: OPSW changes
-
ments.
1.
an option.
2. -
ed settings.
3.
-
4. BOLD.
settings.
Table 1: PM74 Opsw setting table:
1,
2,
3,
4
T
T
T
T
T
8T
11 T
12 T
31 T
T
41 T
© 2022 Digitrax, Inc. www.digitrax.com
6.0 Advanced DT602 based PM74 conguration
To perform these advanced features, a DT602 with SubVersion 0.5 or higher
will be needed - see www.digitrax.com for the latest software IPL.
6.1 Detecting all PM74's and setting Base addresses: On an updated
plugged into-
any
1.
2.
-
pancy detection number used.
3. detected
and sorted
3122 is not set at or above.
4.
encoder knob to scroll up and down
an underline showing the current select-
8.
seconds.
9.
11.
Cs Rt
Selecting DS7X device:
Device: Base+Out# SerNo
PM74 Sw0001+4 # 1222
PM74 Sw0001+4 # 3122
DS7x device select: LH knob
Chng adr
Ident
© 2022 Digitrax, Inc. www.digitrax.com
7.0 Programming PM74 CVs:
enter Operations Mode programming.
1.
Ops Switch" mode CV program-
ming screen, as shown adjacent.
2.
3.
4.
CV data entry.
8.
9.
nished
8.0 Set up Notes:
1.
2.
3.
4.
-
CV Program Menu A:
CV Number:
CV data:
0011
0003
Ops Switch ADR: 0001
LOCO
CVNUM CVDATA DONE
© 2022 Digitrax, Inc. www.digitrax.com— 8 —
10.0 Warranty & Repair
Visit www.digitrax.com
Please return warranty items directly to Digitrax
purchase.
site.
Digitrax, Inc. is not responsible for unintentional errors or omissions in this document.
9.0 FCC Information:
-
-
-
•
•
•
•
-
lems.
fonctionnement.”
307-PM74-0000
www.digitrax.com
Need Support? helpdesk.digitrax.com
Table of contents
Other Digitrax Power Supply manuals
Popular Power Supply manuals by other brands
Gold Note
Gold Note PSU-1250 owner's manual
ZALMAN
ZALMAN ZM450-GS user manual
HP
HP 6269B OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUA L
Tektronix
Tektronix KEITHLEY SourceMeter 2400 Series Calibration and Adjustment Manual
Altronix
Altronix R615DC1016CB installation guide
National Instruments
National Instruments SCXI-1383 installation guide