Digitrax SE74 Manual

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SE74

Features:

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

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

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

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

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

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

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

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

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

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Additional advanced LocoNet Configuration modes using DT602 throttles.

Parts List

1 SE74 Stationary Decoder

1 Instruction Sheet

1.0 SE74 Quick Start - 4 Turnout control function

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.

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.

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.

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.

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.

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!

Complete Train Control

Run Your Trains, Not Your Track!

16 signal head controller with 4 turnout con-

trols and 8 input lines

— 1 —

1 10-pin pluggable input cable

1 SE1 PCB test mast and 10pin cable