Digitrax SE74 Manual Download Page 1

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Features:

 

4 SE1 Digitrax 10-pin ribbon cables that control 4 LED signal heads each.

 

4 Switch (SW) control outputs for solenoid or slow-motion turnouts.

 

Plug-in connectors for simple and easy installation and service.

 

User defined 4+32 consecutive SW addresses in 2000+ SW range.

 

Optional 9 types of DCC Aspect control, including Lunar lamps.

 

Easy setup with Option Switches (OPSW) or LocoNet CV programming.

 

Power input from 2mm DC jack, or DCC track voltage, 10V min to 20V max.

 

8  easy to setup System Routes, with 8 SW Entries each.

 

8  input control lines; 4 for Output/SW change and 4 Sensor/DS inputs.

 

Additional advanced LocoNet Configuration modes using DT602 throttles.

 

Parts List

1 SE74 Stationary Decoder 

       1 10-pin pluggable input cable

1 Instruction Sheet 

 

       1 SE1 PCB test mast and 10pin cable

1.0 SE74 Quick Start - 4 Turnout control function

1. 

Figure 1 shows the recommended connections to operate the SE74 on a Lo

-

coNet layout and to control 4 SE1 signal cables with 16 total signal heads and 

4 solenoid turnouts. 

2.  Connect a PS14 or similar DC 12V power supply to the SE74 via the DC pow

-

er jack.  When powered the green ID LED should light and will briefly wink 

OFF every 2 secs as a product 'heartbeat' showing the SE74 is operational.  

Alternatively, power from DCC feeder wires to the TKA/B terminals.

3.  Plug in an active LocoNet to a SE74 RJ12 connector.  The red OPS LED will 

light up showing connection.  Any good LocoNet message seen will cause the 

SE74 OPS LED to blink OFF briefly.  With no LocoNet the unit will default to 

switch commands from the DCC track connections TKA/TKB.

4. 

Factory default Base SW# is 253 to control turnout #1.  

To set to a custom 

Base number

, press and hold down the ID button for about 3 seconds until 

the RTS and OPS LEDs blink alternately, then release the ID button.  From 

your system send a SW command to set the new 

Base address at this SW#.    

The OPS and RTS LEDs will stop blinking showing the SE74 has set the 

unit's Base SW# to the SW# you just sent, which controls SE74 turnout 1.

5.  Wire and plug in 3-wire solenoid turnouts as shown in figure 1.  To use 4 stall 

type switch motors modify Option Switch (OPSW) 1 to Closed/C, (see section 

4.0), and use 2 wires per motor, with no P+ connections.

6.  Operate turnouts with a SW# and direction Thrown (T) or Closed(C) settings 

at the; Base SW#, or the next 

consecutive

 3 SW#'s now used by this SE74.

That’s all that’s required to initial check an SE74 on LocoNet! 

SE74

 

Complete Train Control

 

Run Your Trains, Not Your Track!

16 signal head controller with 4 turnout con-
trols and 8 input lines

.

Summary of Contents for SE74

Page 1: ...y wink OFF every 2 secs as a product heartbeat showing the SE74 is operational Alternatively power from DCC feeder wires to the TKA B terminals 3 Plug in an active LocoNet to a SE74 RJ12 connector The...

Page 2: ...om SW257 on that control heads 1 16 consecutively with 2SW per head Each SE74 uses 36 total consecutive SW addresses 2 The SW257 264 settings control heads 1 A1 Main 2 A2 Dwarf 3 Main B DC in Complete...

Page 3: ...74 turnouts can be Broadcast setup by turnout1 SW2041 through turn out4 SW2044 10 SW1024 C turns ON Aspect Exercise cycles SW1024 T turns OFF A double click of the ID button will toggle Exercise ON OF...

Page 4: ...e ID and OPSW LEDs will blink alternately to show one Route can be set up Release the RTS button 2 Select a switch address on your throttle between 1 and 8 and issue the command direction for Closed T...

Page 5: ...in BOLD 5 OPSW s not in this table are reserved and should be kept at Factory default T settings for predictable operation 6 OPSW40 C will reset to Factory defaults on OPSW mode exit Table 1 SE74 OPSW...

Page 6: ...nnected to LocoNet this will occur as a SW message to make the change and notify the system it has occurred Wire to momen tary press on buttons for SW control 2 The pins SENS1 SENS2 SENS3 and SENS4 wi...

Page 7: ...means the 2nd SE74 SW aspect Base would need to be 17 or higher 5 Use the LH encoder knob to scroll up and down through the detected SE74 devices with an underline shown at the 2nd SE74 6 At the 2nd...

Page 8: ...suitable DT602 plugged into LocoNet press the Menu 3 4 keys to enter Route Editor menu If any SE74 is on LocoNet the DT602 will beep after about one second and show DS7x routes at the D soft key posit...

Page 9: ...e CV s ac tually each control 8 individual OPSW bits OPSW1 is ls bit of CV11 through OPSW8 as ms bit of CV11 5 The DT602 does not indicate to the SE74 when programming is complete After finishing CV c...

Page 10: ...n for wiring detail and are not installed on the PCB test mast 4 The 3 wire Searchlights of Figures 6 and 7 are common cathode version and allow Lunar lamps to be connected for all 4 heads on an SE1 c...

Page 11: ...features available 4 For 2 wire pulse solenoids e g a Kato N crossover just wire to R G termi nals in the polarity that operates as you need Do not run more than one solenoid device per SE74 pulsed R...

Page 12: ...ty to operate under and be in compliance with CFR 47 rules as administered by the Federal Communication Commission Digitrax believes any conscientiously installed equipment following guidelines in thi...

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