Op er ating Instructions
AC CES SORY DE CODER MX82E, MX82D, MX82V
ACCESSORY DECODER MX82 Page 1
CONTENT: Page
1. Introduction 2
2. Specifications 2
3. Addresses und Programing 3
4. Connecting the MX82 to
track or power bus 8
5. Connecting the MX82 to accessories 8
6. Operating accessories 9
7. Position recognition and feedback 10
Using the MX82 with other DCC systems 10
EDITION:
2004 04 15
2004 05 10
2004 08 25
NOTE:
ZIMO decoders contain an EPROM which stores software that determines its characteristics and functions.
The software version can be read out in CV #7.
The current version may not yet be capable of all the functions mentioned in this manual.
Such missing or incomplete functions can be installed later by updating the software or replacing the
EPROM (only at the factory).
Beginning in October 2004, all decoders (MX82 with SW-version 3 and up) can be updated by the end user;
see page 3.
Software updates are available for the end user free of charge (except for the purchase of the programming
tool).
Updates and alterations performed by Zimo are not covered by any warranty.
The warranty covers hardware damage exclusively, provided such damage is not caused by the user or the
connected equipment.
For update service see www.zimo.at !
In com plete or not yet im ple mented fea tures
(up to Soft ware-Version 3):
- LED com mu ni ca tion
- Back-EMF
- Po si tion feed back with out
end switches
- Bi-directional com mu ni ca tion
SW -Ver si on 3: User updatable decoder MX82E, MX82D, MX82V
1. In tro duc tion
The MX82 ac ces sory de cod ers op er ate turn outs, sig nals, decouplers etc.
ac cord ing to the stan dard ized NMRA-DCC data for mat. They can be used
with any NMRA-DCC sys tem.
Ac ces sory de cod ers are con nected ei ther to the track or a 2-conductor
power bus com ing from the com mand sta tion. The rather small size of the
MX82 (es pe cially the MX82E) al lows the de coder to be in stalled in side the
road bed of HO
track or switch mo tor hous ings (e.g. LGB turn outs).
Turn outs and sig nals con nected to an ac ces sory de coder can be op er ated
ei ther:
?
with a cab/throt tle (e.g. ZIMO MX2, MX2FU, MX21, MX21FU, MX3 etc.)
? us ing de coder in puts (from track con tact/switches)
? with com pu ter and ap pro pri ate soft wa re (STP-dispatching soft wa re)
2. Spec i fi ca tions
The de coder is built on a .75 x.39” board. The MX82E and MX82Vare in su lated in a thin
shrink tube, while the MX82D is wrapped in a slightly heavier shrink tube and sealed
with a spe cial sealer on each end.
T E C H N I C A L D A T A :
Track volt age (from track or power bus) .................................................12 - 24 V
Ac ces sory out put - time-limited cur rent (tur nouts) .......................................... 3 A
Ac ces sory out put - con tin u ous cur rent (sig nals) ............................................. 1 A
“On-time” for tur nouts ...................................................................... 0,1 to 15 sec
Stand-by power (out puts off) ..................................................................... 10 mA
Op er ating tem pe ra tu re ................................................. 4 to 212 F (-20 to 100oC)
Di men sions .............. MX82E 78x.43x.12” (20x11x3mm) MX82D 86x.47x.13”
(22 x 12 x 3,5 mm) MX82V 78x.43x.16” (20 x 11 x 4 mm)
SW-Version 3 and up: UP DATE SOFT WARE ON PRO GRAMMING TRACK ......
Be gin ning with pro duc tion date Sep tem ber/Oc to ber 2004, Zimo de cod ers are
equipped to han dle a soft ware up date by the end user. That re quires a Zimo
MXDECUP de coder up date mod ule (avail able in No vem ber 2004) as well as
a com puter with Win dows op er at ing sys tem and Internet con nec tion (for down loading the new soft ware from Zimo’s web site).The up date mod ule is not tied
to a Zimo sys tem and can there fore be used with other DCC sys tems as well!
De coders man u fac tured ear lier (be fore SW-version 3) will have to be sent to Zimo for a one-time up grade.
Sub se quent up dates can then be per formed by the user. This up grade will be of fered at a very rea son able
priced ser vice in Oc to ber 2004. The de coder soft ware can be read out with CV #519.
For more in for ma tion about de coder up date and the up date mod ule, please
check our web site: www.zimo.at and/or fu ture edi tions of this in struc tion man ual (Oc to ber 2004 and up).
Page 2 ACCESSORY DECODER MX82
MX82 Top View
Track
Turnout
Turnout
Track
+ - supply
red
orange
blue
grey
black
(+)
MX82E
Controls one turnout with solenoid, motor or EPL drive. The
shallow construction simplifies the installation in turnout
housings. BEMF controlled motor drive. Additional inputs to
either operate 4 servos or for train-actuated turnouts or other
switches.
Position feedback through ZIMO train number recognition
pulses (same as MX81) or the standardized NMRA
bi-directional communication *)
MX82D
Identical to MX82E but sealed against water intrusion.
MX82V
A “doubled-up” MX82E .78x .43x.19in (20 x 11 x 5 mm). 2
turnouts or 4 signal light bulbs/LED’s (also 4 Servos
additionally) - bargain priced per turnout.
OVER LO AD PRO TEC TI ON:
As is the case with all ZIMO de co ders, the out puts of the MX82 are pro tec ted
against ex ces si ve cur rent draw and short cir cuits. Any out put is tur ned off if an over
lo ad si tua ti on exists. Af ter that, the de co der keeps te sting the af fec ted out put,
which of ten re sults in flas hing lights.
Even though the de co der is well pro tec ted, do not as su me that it is in de struc ti ble. Plea se pay at ten ti on to the fol lo wing:
Faul ty de co der con nec ti on; con nec ting the mo tor le ads to track po wer for ins tan ce or an over loo ked
con nec ti on bet ween the mo tor brus hes and rail pick-up’s cau ses shorts that are not al ways re cog ni zed
by the over lo ad pro tec ti on cir cuit and could lead to mo tor end sta ge da ma ge or even to tal de struc ti on of
the de co der.
Un fit or de fec ti ve mo tors; a shor ted win ding or com mu ta tor is not al ways re cog ni zed by the high cur rent con sump ti on it cau ses, be cau se the se are of ten just short spi kes. They can lead to de co der
da ma ge, in clu ding da ma ge to end sta ges due to long time ex po su re.
Vol ta ge spi kes which can be in du ced from mo tors and ot her lo ads con nec ted to a de co der may be
re spon si ble for more de co der da ma ge than ex ces si ve cur rent draw. The height of such vol ta ge spi kes
de pends on the track vol ta ge se lec ted and can re ach se ve ral hun dred volts. They will be re mo ved by
spe ci al over vol ta ge pro tec ti on cir cuits but the ca pa ci ty and speed of such ele ments is li mit ed. Don’t se lect a hig her track vol ta ge than what is re com men ded for the rol ling stock used on the lay out. The full
ran ge (up to 24V), ad jus tab le with a Zimo com mand sta ti on, should only be uti li zed in spe ci al ca ses.
Even though Zimo de co ders can be ope ra ted at 24 Volts (MX62 at 20V), that is not the case if used in
con juncti on with some ot her functi on ele ments built into a lo co mo ti ve.
THER MAL PRO TEC TI ON:
All de co ders co ver ed in this ma nu al have the abi li ty to mea su re their own ope ra ting
tem pe ra tu re. Po wer to the mo tor will be tur ned off once the tem pe ra tu re of the
de co der ex ceeds 100oC. The he ad lights start flas hing ra pid ly, at about 10 Hz, so
that the ope ra tor can re cog ni ze this sta te. Mo tor con trol will re su me au to ma ti cal ly
af ter a drop in tem pe ra tu re of about 20oC, ty pi cal ly in 30 to 60 se conds.
3. Ad dresses and Pro gramming
In con trast to loco de cod ers, ac ces sory de coders re quire not only an ad dress but
also a sub ad dress (2 sub ad dresses for the MX82V). The ad dress is re quired for
de coder access with a cab, and the sub ad dress de ter mines with which func tion
key the turn out will be op er ated..
Alt hough the MX82 may be in stal led im me di ate ly, an ad dress has to be as sig ned be fo re it is con nec ted to the lay out wi ring!
As signing a new ad dress is not pos si ble with sev eral MX82 con nected in par al lel to the track or
power bus; if tried, all MX82 would re ceive the same ad dress.
PROGRAMMING PRO CE DURES:
De tailed pro ce dures (ser vice mode and op er a tional mode) for pro gram ming and read ing of ad dresses and con fig u ra tion vari ables are found in the
in struc tion man ual for the cab (e.g. MX21).
Pro gramming is even sim pler and more convenient with the help of a com puter and ADaPT
soft ware (E.Sperrer, soft ware de vel oper)!
Tech ni cal note to ac knowl edg ment/read-out dur ing “ser vice mode” pro gram ming:
When pro gram ming a de coder with a cab or com puter, ev ery suc cess ful pro gram ming step will be made
vis i ble by the de coder. The same ac knowl edg ment method is used when read ing the con fig u ra tion vari ables.
The de coder ac knowl edg ment is car ried out by briefly turn ing the mo tor and head lights on, caus ing
short power pulses that the com mand sta tion rec og nizes. Ac knowl edg ment and read-out of a de coder is
only suc cess ful if the cur rent con sump tion is high enough, which means that the mo tor and head lights
have to be con nected or at least one of the two.
The mea ning of Con fi gu ra ti on Va ria bles (CV’s) are in part stan dardi zed by the
NMRA DCC RE COM MEN DED PRAC TI CES, RP-9.2.2. The re are ho we ver
cer tain CV’s that are for Zimo de co ders only, in some ca ses ex clu si ve ly for spe ci fic
ty pes.
Al ways use the spe ci fi ca tions for the de co der in ques ti on, sin ce the va lue ran ge
may dif fer bet ween ma nu fac tu rers, even with stan dardi zed CV’s; in this case use
the tab le be low.
ACCESSORY DECODER MX82 Page 3
Programming in
“Service mode” ”Operations mode”
Decoder or turnout with decoder on Decoder connected to main track.
programming track (socket: ”PROG”).
Addresses and CV programming. Programming of configuration variables only.
Secure programming with Programming without acknowledgement (commands
are sent repeatedly, which increases reliability)
Read-out of configuration variables and Read-out of configuration variables is not possible.
address is possible. (Later possible with “bi-directional communication”).
Start procedure with “E” and “MAN” keys. Start procedure with “E” and “F” or “E” und “W”.
(”on-the-main”, MX1 -socket ”SCHIENE”),
acknowledgement.
Page 4 ACCESSORY DECODER MX82
# 513
# 521
resp.:
# 1, # 9
Decoder address 1 - 511 3
The accessory decoder address is spread
over two configuration variables (long 9
bit); the calculation is done by the Zimo
cab; the user enters and reads the
complete address as a number between 1
and 511.
NOTE: A sub address is necessary to
operate a decoder(s).
# 514
resp.:
# 2
Turnout operated
by switch inputs
0
Enter value or combination thereof:
1=Input 1 activated, left
2=Input 2 activated, right
4=Input 3 activated, left (MX82V only)
8=Input 4 activated, right(MX82V only)
# 545
resp.:
# 33
Sub address(es)
For outputs on
top side
(all MX82 types)
and
For outputs on
bottom side
(MX82V only)
MX82E,
MX82D:
0 - 3, 9
MX82V:
0 - 32,
99
Ones and
tens digit
must be of
different
value !!!
10
(For
MX82E
= “0”)
Sub address(es); determine with which
of the 4 function keys, F1 - F4, the
accessory is actuated.
ONES DIGIT: (for top outputs on MX82E
and MX82D )
= 0: F0 (#1 with Zimo cab)
= 1: F1 (#2 with Zimo cab)
= 2: F2 (#3 with Zimo cab)
= 3: F3 (#4 with Zimo cab)
= 9: Top outputs turned off.
TENS DIGIT: (for bottom outputs, MX82V
only):
= 0: F0 (#1 with Zimo cab)
= 1: F1 (#2 with Zimo cab)
= 2: F2 (#3 with Zimo cab)
= 3: F3 (#4 with Zimo cab)
= 9: bottom outputs turned off.
# 515
# 516
# 517
# 518
resp.:
# 3 to
# 6
Power-on time 0 - 255 2
The time an accessory is powered up
in 1/10 of a second (max. 25 sec.
Default value “2” = 0.2 sec).
Value = 0: continuous on (usually for signal
lights).
These CV’s are tied to sub addresses in
CV #545. Max. 2 of these can be set.
E.g. #515 for F0, #516 for F1 etc.
# 519
resp.:
# 7
Software version
Read only
This CV displays decoder software
version.
CV-Number Name Value range Description
Default value
# 541
resp.:
# 29
Identification
Read
only
Identifies the decoder as accessory
decoder.
# 546
resp.:
# 34
Light-up time
(only when “continuous
on” is selected, as in CV
# 515, 516, 517 or 518 = 0)
0 - 255 10
For prototypical signal operation:
Time in 1/10 of a second for a total range
of 25 seconds until the light bulb reaches
its full intensity.
# 547
resp.:
# 35
Light-up delay
(only when “continuous
on” is selected, as in CV
# 515, 516, 517 or 518 = 0)
0 - 255 0
For prototypical signal operation:
Time in 1/10 of a second for a total
range of 25 seconds until the light bulb
starts to illuminate.
# 548
resp.:
# 36
Dimming time
(only when “continuous
on” is selected, as in CV
# 515, 516, 517 or 518 = 0)
0 - 255 10
For prototypical signal operation:
Time in 1/10 of a second for a total range
of 25 seconds until the light bulb is
completely off.
# 549
resp.:
# 37
Initial pulse
(except for “continuous
on”)
0 - 255 0
Time in 1/10 of a second for a total range
of 25 seconds until a switch command is
sent after booting up the system or after
connecting a MX82.
Value= 0: No initial pulse.
# 550
resp.:
# 38
Direction
left - right
0 - 63 0
Value=1: for top outputs
Value=2: for bottom outputs
(MX82 only)
Value=4: Servo 1, reverses direction
Value=8: Servo 2, reverses direction
Value=16: Servo 3, reverses direction
Value=32: Servo 4, reverses direction
Value= 0: no change in direction
# 551
resp.:
# 39
Dimming
(only when “continuous
on” is selected, as in CV
# 515, 516, 517 or 518 = 0)
0 - 255 255
When output is activated, brightness of
bulb is controlled by pulse with modulation
after “light-up” phase. The larger the value,
the brighter the bulb.
= 255: full brightness
# 552
resp.:
# 40
Single (lights) or
paired (turnout)
functions
and
Position recognition
(on/off)
0 - 7
0
Bit 0: for top outputs
Values = 0: paired function
= 1: single function
Bit 1: for bottom outputs (MX82V only)
Values = 0: paired function
= 2: single function
Bit 2: for position recognition
Values = 0: off
= 4: on
ACCESSORY DECODER MX82 Page 5
# 553
resp
.:
# 41
Address and sub
addresses for
Servo output
1 and 2
0 - 33
or
100 -
133
110
This CV determines whether the servos are
controlled with the same address as in CV
# 513, 521 or the next one higher
(default!!!) and which of the 4 function keys
F0 - F3 are used.
ONES DIGIT values (for Servo 1):
= 0: F0 (#1 with Zimo cab)
= 1: F1 (#2 with Zimo cab)
= 2: F2 (#3 with Zimo cab)
= 3: F3 (#4 with Zimo cab)
TENS DIGIT values (for Servo 2):
= 0: F0 (#1 with Zimo cab)
= 1: F1 ....... continue as above.
HUNDREDS DIGIT values:
= 0 Address as per CV # 513, 521
= 1 The servos operate on the next
higher address, that is: address as
in CV # 513,521 + 1.
# 554
resp.:
# 42
Ad dress and sub
ad dresses for
Servo out put
3 und 4
0 - 33
or
100 -
133
132
Use as CV # 553 above but for
servo out puts 3 and 4.
ONES DIGIT for servo 3;
TENS DIGIT for servo 4;
HUN DREDS DIGIT:
= 0 Ad dress as per CV # 513, 521
= 1 The ser vos op er ate on the next
higher ad dress, that is: ad dress
as in CV # 513,521 + 1.
# 555
resp.:
# 43
Motor acceleration
(with pulse width
modulation, only if CV
#515, 516, 517 or 518 > 0)
0 - 255 0
Slow acceleration of motor drive;
time in 1/10 of a second (max. 25 sec) until
the motor connected reaches its full speed
(according to CV #557).
# 556
resp.:
# 44
Mo tor deceleration
(with pulse width mod u la tion, only if CV #515, 516,
517 or 518 > 0)
0 - 255 0
Slow de cel er a tion of mo tor drive;time in
1/10 of a sec ond (max. 25 sec) un til the mo tor
co mes to a com plete stop.
# 557
bzw.:
# 45
Mo tor speed
(with pulse width mod u la tion, only if CV #515, 516,
517 or 518 > 0)
0 - 255 255
Max i mum mo tor speed (af ter ac cel er a tion
phase) by means of pulse width mod u la
-
tion.
= 255: high est pos si ble speed.
# 558
bzw.:
# 46
Back-EMF
0 - 255
(Ver sion 3
and
above)
0
Se ver ity of mo tor con trol
= 0: no back-EMF
# 561
resp.:
# 49
Servo protocol 0
= 0: Servo pro to col with pos i tive pulses.
= 1: Servo pro to col with neg a tive pulses.
# 562
resp.:
# 50
Ser vo 1
Left stop
0 - 255 0 De ter mines left stop po si tion.
# 563
resp.:
# 51
Ser vo 1
Right stop
0 - 255 255 De ter mines right stop po si tion.
# 564
resp.:
# 52
Ser vo 1
Rotating speed
0 - 255 30
The en tered value rep re sents the time (in 1/10
sec) needed to drive the servo be tween de fined
stops. Max i mum 25 sec. De fault value “30” = 3
sec (plus ac cel er a tion and de cel er a tion times
pro grammed in CV #565).
# 565
resp.:
# 53
Ser vo 1
Ac cel er a tion and
deceleration
0 - 255 20
Slow ac cel er a tion and de cel er a tion of servo;
time in 1/10 of a sec. (max. 25 sec), de fault value
“20” = 2 sec.
# 566 as above,
# 567 for
#568 Servo 2
# 569
resp
.:
# 54
# 55
# 56
# 57
# 570 as above
# 571 for
# 572 Ser vo 3
# 573
resp.:
# 58
# 59
# 60
# 61
# 574 as above
# 575 for
# 576 Ser vo 4
# 577
resp.:
# 62
# 63
# 64
# 65
TIPS and EX AM PLES of using CON FI GU RA TI ON VA RIA BLES:
In re gards to wi ring: see chap ter 5 !
BA SIC AP PLI CA TIONS FOR TURN OUTS....
and also sema phores with so le noid or mo tor drives
As de li ver ed (or af ter a HARD RE SET, which is ac com plis hed with a ZIMO cab by
chan ging the pro gram med ad dress to “0" or by pro gram ming CV # 8 to 8), the most
im por tant CV’s are set as fol lows: Main ad dress CV # 513, 521 = 3 , Sub ad dress CV
# 545 = 10, Po wer-on time CV’s # 515 - 518 = 2.
In case of an MX82E or MX82D (1 tur nout only):
the tur nout con nec ted to the oran ge, grey and blue wi res is ope ra ted with the F0
key (with Zimo cab use key #1) at ad dress #3. Po wer is supp lied for 0.2 se conds,
which is com mon for so le noid or EPL dri ves.
With an MX82V for (2 tur nouts):
for the first tur nout see abo ve des crip ti on of the MX82E; the se cond tur nout con nec ted to the yel low, whi te and blue wi res, is ope ra ted with the F1 key (be cau se of
the tens di git set in CV #545=10), with Zimo cab use Key #2.
If a mo tori zed switch ma chi ne is used ins te ad of a so le noid or EPL dri ve as abo
ve, the po wer-on time has to be chan ged ac cor ding ly ( CV #515, if sub ad dress “0” is
used in CV #545). For ex am ple, if the tur nout mo tor’s switch time is 3 se conds, a va lue of “30” or so mewhat hig her should be en te red.
The CV #515 is only then ap pli ca ble if the sub ad dress “0” is used in CV #545. For sub ad dress “1”
use CV #516, for sub ad dress “2” use CV #517 and for sub ad dress “3” use CV #518 to set po wer-on time.
The rea son for this stran ge clas si fi ca ti on is that the pro gram ming is simp ler when se ve ral ac ces so ry de co ders are used at the same ad dress but with dif fe rent sub ad dres ses. In such a case, each de co der has
its own CV for po wer-on time (e.g. one uses #515, the next #516 and so on) and the re is no chan ce that
anot her de co der gets re-programmed un in ten tio nal ly.
If 2 mo tori zed switch ma chi nes are used with an MX82V, both ap pli ca ble po
wer-on CV’s (e.g. #515 and 516) have to be set to an ap pro pria te va lue (e.g. “30”).
In or der to uti li ze the 4 sub ad dres ses, which are avai la ble for each ac ces so ry de -
co der ad dress, se ve ral MX82 de co der (2 MX82V or 4 MX82E) have to be pro gram med to the same ad dress (in CV #513, 521) but dif fe rent sub ad dres ses (CV #545).
For ex am ple:
- First De co der - MX82E: CV # 513, 521 = 25; CV # 545 = 0 (de fault “10” is also OK)
- Se cond De co der - MX82V: CV # 513, 521 = 25; CV # 545 = 21 (that is sub addr 1 & 2)
- Third De co der - MX82E: CV # 513, 521 = 25; CV # 545 = 03 (that is sub ad dress 3)
The po wer-on ti mes for this ex am ple - if dif fe rent from the de fault set ting of 0.1
se conds- are set as fol lows:
For the first de co der CV #515 = ...,
For the se cond de co der CV #516 = ... and CV #517 = ...,
For the third de co der CV #518 = ....
Forced turn out switch ing us ing in puts 1 to 4:
This is use ful if a train should switch a turn out by it self with the help of a “switch track”,
reed switch etc.
The in put chan nels have to be ac ti vat ed with CV #514; for the abo ve ex am ple (In puts
1 und 2) CV #514 = 3 would be the cor rect set ting. The tur nout can still be con trol led
with the cab or a com pu ter (ex cept du ring ac ti vat ion through the in put chan nels).
Spe ci al in put functi on: Ap ply ing a per ma nent po si ti ve vol ta ge pre vents the tur nout
from being swit ched!
NOTE: Be cau se the same con nec tions are used for ser vos or switch in puts, it is not
pos si ble to em ploy for ced swit ching for ser vos.
Page 6 ACCESSORY DECODER MX82
MX82 back side
Input 2
1Input
Input 4
Input 3
Ground
blue (+)
Pull-down resistors 10K
Turnout
orange
grey
Motor
Switch inputs
To track or other power supply
red
black
SIGNALS . . .
The MX82 is most of ten used for sim ple red/green sig nals (2 as pect sig
nals), which represents the same logic as for a turn out. The MX8 or MX88
would be the better, more eco nom i cal choice for multi as pect sig nals.
The re is only one dif fe ren ce what CV’s are con cer ned com pa red to tur nouts
the po wer-on time has to be set to “0”, for con ti nu ous po wer. Of cour se, the
same re la tions hip ap plies bet ween the sub ad dress and the ap pli ca ble CV
(#515 for sub ad dress 0, #516 for sub ad dress 1 and so on).
Of ten a prototypical slow sig nal il lu mi na tion and dim ming func tion is
de sired. The CV #546, 547 and 548 can be used to achieve this; typ i cal val ues may be: CV #546 = 15, CV #547 = 10 and CV #548 = 15. Those val ues
are ap pli ca ble to all lights con nected (up to 4 with an MX82V). There is no
re la tion ship be tween these CV’s and the sub ad dress in con trast to the
“power-on” time (CV # 515-518).
If the paired func tion of light bulbs (2 with MX82E or 4 with MX82V) is not
pos si ble or de sired and there fore each bulb con trolled in di vid u ally, set
the ap pro pri ate Bit in CV #552 to “1” (ones digit for the or ange/grey and tens
digit for yel low/white wires). Nat u rally, the user in ter face (cab, com mand
sta tion...) may need to be con fig ured ac cord ingly so that sin gle light bulbs
can be con trolled with ease.
ELEC TRO MAG NETIC DECOUPLERS . . .
A decoupler is treated as a sin gle func tion. In case of an MX82E, CV #552 is
set to 1 and in case of an MX82V to 11. Mixed op er a tion is also pos si ble with
the MX82V (or ange/grey wires for a turn out; yel low/white for decoupler).
SERVOS . . .
4 logic level out puts (sol der pads) are pro vided for the con trol of ser vos
(MX82E as well as MX82V). Each of those out puts can be con nected to a
stan dard servo con trol in put. The power for the servo (5V) is not gen er ated
by the MX82; an other source is re quired (see chap ter 5).
An MX82 can, if so de sired, op er ate up to 4 ser vos si mul ta neously with
so le noid or mo tor ized turn outs (or sig nals) or ex clu sively.
At ten ti on:
The 4 servo con nec tions are set to the next higher ad dress by
de fault
through the CV set tings #553=110 and #554=132: the ser vos do not op er
ate with the ac ces sory ad dress stored in CV #513 and 521 but rather ac cord ing to the val ues in CV #513 and #521 + 1. For ex am ple: If ad dress 36 is
se lected, the ser vos op er ate at ad dress 37 and Func tion keys F0, F1, F2
and F3.
If you wish to op er ate the ser vos with the ba sic ad dress as in CV #513,521
(ad dress 36 in this ex am ple), the CV’s should be pro grammed to CV
#553=10 and #554=32 (omit ting the hun dredth digit in both CV’s = ba sic ad dress) and #545=99 (im por tant! This turns off the “usual” out puts for turn outs).
IN FOR MA TION WILL BE SUP PLE MENTED LATER (List of ad dress com bi na -
tions and other ex pe ri ences with servo drives).
SPE CIAL FUNC TIONS for MOTO DRIVES (Switch ma chines). . .
IN FOR MA TI ON WILL BE SUPP LE MEN TED LA TER!
The op tional “Ini tial Pulse” (CV #549) is to as sure that all turn outs will be in
the same po si tion af ter the lay out is booted up, as they were be fore the lay
out was turned off. If all pulses were sent to all turn outs at the same time, the
power sup ply could be over loaded. To pre vent this, dif fer ent val ues can be
en tered to CV #549 which spreads this load over a wider time frame, up to
15 sec onds.
For con ti nu ous po wer out put (most ly sig nal light bulbs), CV #515 (or 516,
517, 518 de pen ding on sub ad dress) has to be set to “0”. In this mode the
op ti on of slow il lu mi na ti on and dim ming is also avai la ble (CV #546, 547,
548), which is an espe ci al ly pro to ty pi cal way of sig nal ope ra ti on.
Changing CV #550, Bit 0 (De ac ti va tion of turn out po si tion feed back) is sel dom re quired. This pos si bil ity is there in case some body is sen si tive to the
noise gen er ated by the turn out po si tion rec og ni tion func tion but also (rather
un likely but not im pos si ble if used with other sys tems) in cases where the
feed back pulses could in ter fere with the com mand sta tion or boost ers (e.g.
Track power turned off due to short cir cuit in di ca tion or dis torted DCC data).
ACCESSORY DECODER MX82 Page 7
4. Con necting the MX82 to the track or a power bus
The ac ces sory de coder MX82 is con nected with the red and black wire to
the track or the power bus com ing from the com mand sta tions track out put.
Po lar ity is ir rel e vant. Any num ber of ac ces sory de cod ers may be con nected
in par al lel since their own power con sump tion is ex tremely low.
NOTE: Con necting the ac ces sory de coder to the track is only prac ti cal if the track sec tion con cerned is con nected it self di rectly to the com mand sta tion or booster.
An ac ces sory de coder must not be con nected to a sec tion of track that is con nected to a track sec tion
mod ule with oc cu pancy de tec tion be cause the small cur rent con sump tion will cause the track sec tion
mod ule to in di cate an oc cu pied track that in re al ity is not true.
5. Con necting the MX82 to accessories
DOU BLE COIL SWITCH MA CHINES AND SIG NALS:
Such ac ces so ries are con nected with 3 wires.
The blue wire sup plies the power and is con nected
to the com mon wire of the turn out and the grey and
or ange wires are con nected to the sin gle wires.
MO TOR IZED SWITCH MA CHINES AND SIG NALS:
Such units are con nected with 2 wires. The blue
wire is not needed in this ap pli ca tion. The other
wires (grey/or ange) are con nected with the switch
ma chine. The power-on time has to be pro grammed with CV #515, 516, 517 de pend ing on
the sub ad dress used.
EPL SWITCH MACHINES (LGB):
EPL switch ma chines are elec tri cally iden ti cal to the
mo tor ized switch ma chine (see above). The de fault
power on time of .2 sec onds can be left as is since the
ac tual switch time of the EPL ma chine is rather short.
SIG NALS:
Com mer cially avail able sig nals have a com mon wire
that con nect to the blue wire (pos i tive) of the de coder.
The sin gle wires are con nected with the or ange and
grey wire.
Pay at ten tion to po lar ity in case of LED’s (only sig nals
with com mon an ode) and use an ap pro pri ate re sis tor
(usu ally 1Kohm).
Page 8 ACCESSORY DECODER MX82
SIGNAL
Red bulb green bulb
grey
orange
blue
+
TWIN COIL SWITCH MACHINE
left coil right coil
grey
orange
blue
MOTORIZED OR EPL SWITCH
MACHINE
M
grey
orange
COMMAND
STATION
MX1
MX82 MX82 MX82
black,
red
blue
grey
orange
black
red
Common positive for accessories
with 3 wires
Right turnout connection
Left turnout connection
Track
Track
MX82 Top View
SERVOS:
Most ser vos sold to day re quire power from a
reg u lated 5V power sup ply. This is usu ally
ac com plished with a LM7805 volt age reg u la tor
or equiv a lent. Ad di tionally, a di ode and a cou ple of
con dens ers are also needed.
Normally such a power
sup ply can be fed
through the blue wire
com ing from the
de cod ers in ter nal
reg u la tor, as shown
in this draw ing.
How ever, if the peak
cur rent draw of the
servo ex ceeds 1 amp,
an ex ter nal rec ti fier
con nected di rectly to the track should be used in stead (Im por tant: Make
sure that all ground points (de coder, servo and reg u la tor) are con nected
with each other!).
The con trol wire be tween the de coder and the servo should not con tain any
elec tronic com po nents, such as pro tec tive or pull-up re sis tors!
Ex ter nal power sup ply for twin coil switch ma chines
In some ap pli ca tions the track volt age may not be suit able for op er at ing
turn outs. The prob lem may be caused by too low of a track volt age or a
switch ma chine that is de signed to work on AC only. N gauge switch
machines from Ar nold and some of Roco’s are well known for this prob lem.
A pos si ble so lu tion may be found
- in using a po wer supp ly that supp lies an un fil te red DC vol ta ge (its ef fect is
si mi lar to AC and meets the “ na tu ral” re qui re ments of many such
ma chi nes). For ex am ple, an old-fashioned ( non-electronic) mo del
rail ro ad po wer pack may be used. But pay at ten ti on that only the DC out put
is suit ab le. Un der no cir cums tan ces should the AC out put be used !
An or di na ry trans for mer (e.g. 16 - 18V out put) with a rec ti fier ad ded can
also be used ins te ad of a mo del rail ro ad po wer pack.
- The po si ti ve wire of this supp ly is con nec ted to the com mon wire of the
twin coil ma chi ne. The ot her coil wi res are as usu al con nec ted to the grey
and oran ge wire of the MX82. The ground wire of the ex ter nal po wer
supp ly must be con nec ted to the sys tem ground (spa de ter mi nal
“MAS SE” of the MX1 com mand sta ti on).
6.
Op er ating ac ces so ries
. . . with a MX2, MX2FU, MX21or MX21FUcab:
En ter the MX82 ad dress and ac ti vate with keys “W” or “A” (the ”A” key can
be used if this ad dress was al ready used as ac ces sory ad dress in the past).
The dis play is il lu mi nated red, as it al ways is when the ac ces sory mode is
ac tive.
An ad di tional re minder is the “W” in the dis play.
See in struc tion man ual for the Zimo cab, MX2, MX21 etc.!
. . . W i t h a c o m p u t e r :
See “STP” in struc tion manual !
ACCESSORY DECODER MX82 Page 9
orange (MX82)
grey (MX82)
To common wire
External
Power
Supply
+
-
TWIN COIL MACHINE
To GROUND at command station
(spade terminal “MASSE” at MX1
MX82 Back View
Servo 2
Servo 1
Servo 4
Servo 3
Ground
blue (+)
7805
1N4007
100 uF,
25 V
100 uF,
25 V
5 V
0 V
Servo control wire
Servo
7. Po si tion rec og ni tion and feed back
The ac ces sory de coder MX82 is equipped with a feed back mech a nism that
is based on the ZIMO train num ber rec og ni tion. “Switch pulses” are sent to
the track if switch ma chines with end switches are used, from which an ap
pro pri ately equipped com mand sta tion is able to learn the turn out po si tion
and sub se quently send that info along to the cab and com puter.
How ever, the nec es sary hard ware for the MX1 com mand sta tion as well as
the soft ware were not avail able at the time this in struc tion man ual went to
print. It is not clear at this point ei ther whether the turn out po si tion will be
checked only af ter the turn out is op er ated or a per ma nent su per vi sion is
pos si ble as is the case with the MX8 ac ces sory mod ule (so that a man ual in
ter ven tion is also rec og nized).
Using the MX82 with other DCC sys tems
Be cause the MX82 ac ces sory de coder is fully NMRA-DCC com pat i ble, it
can be used on lay outs operated by other com pat i ble sys tems as well. This
is the case, among oth ers, with “Dig i tal plus” (Lenz) and Digitrax.
MX82
with
Lenz “DI GI TAL plus” Soft ware-Version 2.0 or newer :
With this sys tem num ber 1 - 255 can be used to op er ate turn outs. These
num bers are arranged to ad dresses and sub ad dresses as fol lows:
Turn outs 1 - 4 at the LENZ cab: MX82-address 1, Sub ad dress 0 - 3
Tur nouts 5 - 8 at the LENZ cab: MX82-address 2, Sub ad dress 0 - 3
Tur nouts 9 - 12 at the LENZ cab: Ad dress 3 (DE FAULT !), Sub ad dress
0 - 3 and so on.
If, for ex am ple, an MX82 is to be op er ated with num ber 10, the value for the ad dress
in CV #1 must be “3” and the value for the sub ad dress in CV #33 must be “1”.
If the MX82 servo out puts are used, note that these are as signed by de fault
to the next higher ad dress than the pro grammed de coder ad dress.
For ex am ple:
Servo out puts at the LENZ cab are con trolled with
13 - 16, with a pro grammed MX82 ad dress 3 (de fault)
17 - 20, with a pro grammed MX82 ad dress 4
and so on.
To be able to pro gram a de coder, en ter the pro gram ming mode, then
the CV mode with the cab. Pos si ble er ror mes sages (”Err 2”) due to
miss ing ac knowl edg ments (which de pends on the ac ces sory con nected
to the MX82) can be ig nored.
MX82 with
LGB:
Here as well, turn outs are not ar ranged in ad dresses and sub ad dresses but
rather num bered; prac ti cally the same as with the Lenz sys tem (see above).
Se lect the ac ces sory mode at the 55015 Uni ver sal Handy with keys F and
1. The turn out ad dress starts at 1, where:
Turn out 1: CV1=1, CV33=0
Turn out 2: CV1=1, CV33=1
Turn out 3: CV1=1, CV33=2
Turn out 4: CV1=1, CV33=3
Turn out 5: CV1=2, CV33=0
Turn out 6: CV1=2, CV33=1
etc.
Switch turn outs with left and right ar row keys.
MX82 with
In tel li box :
Intellibox also num bers the turn outs like the Lenz sys tem does (see above).
Page 10 ACCESSORY DECODER MX82
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