601356

märklin #601356 decoder for BR91.3(T9.3)

and

märklin #601355 Sound effect circuit for BR91.3(T9.3)

This is a result of my study for märklin #601356 decoder for BR91.3(T9.3) and märklin #601355 Sound effect circuit for BR91.3(T9.3).

Special note of this Decoder and Sound effect circuit!

These electronics circuits are very special for BR91.3 locomotive. Some of outputs (function etc.) are not similar to that of conventional Gauge 1 products (ex. c95). Please take special care if you will use them for another purpose!
I am still under research for some function. Please take special care again for output etc. with '?' mark.

märklin #601356 decoder for BR91.3(T9.3)

Pin assign of terminals and pin headers on the decoder are:

Terminal A

Pin# Description Specification Color of wire

#1

TELEX
Switched to GND by additional circuit board with about 10s 'egg timer'

#2 +Ub +20V

#3

#4 Lr +16.4V(Switched by Lr to GND with series 1k ohm resister)

Terminal B

Pin#

Description

Specification

Color of wire

#1

Motor

See below chart

#2

Motor

See below chart

#3

Current Pickup

From insulated wheel

#4

Combination of 'direction arrow' on 6021 CU and output.

Direction

<MOTOR>#1

<MOTOR>#2

/\

+0~ +18V

0V

\/

0V

+0V~+18V

Terminal C

Pin# Description Specification Color of wire

#1

Lf
+16.4V(Switched by Lf to GND with series 1k ohm resister)

#2 +Ub +20V

#3 +Ub +20V

#4 Smoke +16.4V(Switched by f1 to GND)

Terminal D

Pin#

Description

Color of wire

#1

Speaker

#2

Speaker

Pinheader socket A

Pin# Description Specification

#1

Rail
From current pickups

#2 Rail From chassis

#3 GND

#4 GND(?)

Pinheader socket B

Pin# Description Specification

#1

TELEX
+5V Output of Egg timer(about 10second)

#2 N.C.

#3 F4 Pull down to GND when F4 turned on

#4 Lf / Lr Pull down to GND when Function turned on (both Lf / Lr)

#5

F3

Pull down to GND when F3 turned on

#6

Direction

/\ =+5V \/ =GND

#7

F2

Pull down to GND when F2 turned on

#8

N.C.

#9

Steam Sound

Pull down to GND by two position sliding switch on decoder PCB turned on

#10

Full speed voltage(?)

Reference voltage for measuring speed step +2.4V(=Speed step 14)

Pinheader socket C

Pin# Description Specification

#1

Direction change acknowledge(?)

Normal= 2.5V Direction change = About -20V one Pulse

#2

Direction change acknowledge(?)

Normal= 2.5V Direction change = About -20V one Pulse

#3

Ordered Speed step*

(Directly according to speed step ordered by control unit)

#4

Actual motor speed*

(According to Actual motor voltage including accelaration / brake delay)

*These speed signals are according to new 27 speed step system.

Value for each 0.5 step is about 75mV(may vary in both lower and top speed step). Value of full speed step is 2.4V.

<About 27 speed step system>:
888Refer for märklin magazin 2/2000 'Geschwindigkeits-Feinregelung mit 27 Fahrsufen' .

Pinheader socket D

Pin# Description Specification

#1

Speaker
From sound effect circuit

#2

Speaker
From sound effect circuit

Three position Switch under side of circuit.

Usage: Track Voltage Select.

Front Center Rear

DC
AC(Analog)
DIGITAL

Two position Switch under side of circuit.

Usage: Chuff sound control

Front Rear

ON OFF

This switch does not cut off both Steam Bell and Whistle sound.
These sounds are able to digitally control any time as long as the loco on the digital track and DIP switch #2 of #601355 is ON.

märklin #601355 Sound effect circuit for BR91.3(T9.3)

Pin assign of terminal to be connected hall sensor unit #602178:

Pin#

Description
Specification
Color of wire

#1

Vcc
+5V

#2

Signal
Vcc when hall sensor is turned on. Other wise GND

#3

GND
GND

Usage of DIP switch:

Switch#
ON

OFF

#1
Not used(?) Not used(?)

#2
Bell and Whistle ON Bell and Whistle OFF

#3
Automatic turnoff after 50 seconds Background Noise

#4
Automatic fireman shoveling coal No shoveling sound.

#5
Not used(?) Not used(?)

#6
Flat valve set noise Round valve set noise

#7
Coasting control on. Always full chuff sound

#8
Four chuffs per one wheel round Two chuffs per one wheel round

All of name and number of connectors or terminals are not official name / number of märklin.

All of Voltage are measured between rectifier(internal) Ground(=Gnd).

Pin#	Description	Specification	Color of wire
#1	TELEX	Switched to GND by additional circuit board with about 10s 'egg timer'
#2	+Ub	+20V
#3	+Ub	+20V
#4	Lr	+16.4V(Switched by Lr to GND with series 1k ohm resister)

Direction	<MOTOR>#1	<MOTOR>#2
/\	+0~ +18V	0V
\/	0V	+0V~+18V

Switch#	ON	OFF
#1	Not used(?)	Not used(?)
#2	Bell and Whistle ON	Bell and Whistle OFF
#3	Automatic turnoff after 50 seconds	Background Noise
#4	Automatic fireman shoveling coal	No shoveling sound.
#5	Not used(?)	Not used(?)
#6	Flat valve set noise	Round valve set noise
#7	Coasting control on.	Always full chuff sound
#8	Four chuffs per one wheel round	Two chuffs per one wheel round