Function
Idle/Moving
F1
Bell on/off
F2
Horn
F3
ACC 1 and ACC 2 on/off (CV 118/119)
F4
Coupling 1
F5
Brake release (idle) / brake squeal (moving)
F6
Dynamic brake on/off
F7
Air hose firing/uncoupling lever
F8
3 times will shut down when in idle / Manual notch down
F9
Engine cooling fan / Manual notch up
F10
Rail wheel clack (only moving)
F11
Traction air compressor
F12
Change prime diesel mover type, (CV123, 4 types)
F13
Master volume reduce by 1
F14
Master volume increase by 1
F15
Air compressor
F16
Flange squeal
F17
Air release
F18
Change bell type (use F1 to turn off bell after adjustment)
F19
Horn type select (total 22 different horns)
F20
Associated loco sound
F21
Change bell volume (use F1 to turn off bell after adjustment)
F22
Change horn volume
F23
Change diesel rumble volume
F24
Safety valve pop
F25
Air release
F26
Flange noise
F27
Sand drop
F28
Ditch light flash enable/disable with Air release (CV 121)
BACK EMF LOAD CONTROL (PID CONTROLLER)
This decoder is equipped with adjustable back EMF load control feature. It is a
closed loop speed control. With back EMF load control the locomotive will maintain its
speed regardless of pulling up hill or driving down hill. You may program the back EMF
load control intensity, CV124, to a lower value to get less back EMF load control. This
will enable the locomotive to slow down during uphill travel like a real locomotive.
The PID controller contains three components: proportional gain (CV113); the
integral gain (CV114); and derivative gain (fixed). Designing (tuning) a PID
controller is a kind of “rocket science”. So we optimized these gains at the
factory but still give the customer final adjustments. We recommend that you do
not change these settings. Too much gain may cause the motor to oscilate
(become unstable). Too little gain may cause a slow response. Additional
knowledge of PID feedback control is required before attempting to adjust CV113
and CV114. If CV113 and CV114 are programmed incorrectly, the locomotive will
not run smoothly. Program CV125 to “1” will automatically restore the default PID
controller settings. If you can not get the PID controller work properly or
you don’t know to tune it, you should program CV6 to enable adaptive
PID control to let the decoder to select the best back EMF control for
your loco. You can also turn off the Back EMF load control by program CV124
with a value of 0 if the adaptive control fails.
LIGHT EFFECT PROGRAMMING CHART FOR CV#117/118/119
The decoder has 17 different lights effects. CV 117 controls both front and rear
headlight effects. Use F0 to turn on or off the Headlights. CV118/CV119 control
ACC1/ACC2 light effects. Use F3 to turn on or off ACC1 and ACC2. For ditch light
operation you must program Cv118 and CV119 to the same ditch light type. In
type A the ditch lights will flash when F2 (horn) or F3 is on. In type B the ditch
lights will flash when F2 is on and stay on when F3 is on. If you use a value
inconsistent with actual headlights, ( CV117), the headlights will default to normal
on/off. For example trying to use a value of 14 in CV117 for firebox flicker, the
headlights will default to normal on/off.
INSTALLATION
Remove the screws that hold down the original PCB. Remove the original PCB and
note the locomotives wire colors and locations from where they originate inside the
chassis. Before removing the wires from the PCB study all wires and identify the four
wheel pickup wires (each side has two wires connnected together) and two motor
wires. Light wiring may be different depending the on road name.
You must
disconnect the motor terminals from the pickups, connect the pickup wires to the
pickup tabs. Connect the correct motor terminals to the motor tabs.
The decoder is set up to use the LED or 1.5V bulbs. Install the wires to the decoder
as noted in the following diagram. The tab marked common on the decoder is set to
5V for low voltage bulbs or LED’s. If the light is not bright enough you can use any
wheel pickup tab as common tab. You may need a 1k resistor if the light is too
bright. Acc1 or Acc2 are used for extra lighting. This
stereo
decoder comes with two
speakers for the E8/9 which has two diesel engines. Speaker # 2 should be placed
in the front.
OPERATION
The decoder has a default address #3. Select address #3 on your DCC. Release
service brake (F5) and dynamic brake (F6). You will hear the brake release
sound when you turn off F5. Move up the throttle and the loco should start to
move. If the loco does not move on speed 1 you can add more start voltage by
programming CV2 with a larger number. You can program the acceleration
momentum CV3 and deceleration momentum CV4 to simulate a real train. The
decoder has start up and shut down features. If the loco was previously shut
down you have to start up the engine first. Press any function key to start up the
engine. To shut down the engine you must bring the loco to idle and then press
F8 three times.
This decoder has 22 different horns and 8 bells. You can use F19 or program
CV50 to select horn. Also use F18 or program CV52 to select bell.
The decoder default is set to automatic notch mode. You can program CV122 to 3
for manual notch mode for realistic operation. In the manual notch mode the notch
level is not controlled by loco speed. It is controlled by F9 ( notch up) and F8 (
notch down).
SERVICE BRAKING: To apply service brake set throttle to zero and press F5. The
loco will slow down fast and you will hear the brake squeal. You can pump the
brake by turning F5 on and off to stop the loco at desired location. The brake rate
is proportional to deceleration rate that you program in CV4. If you forget to turn
off F5 and move the throttle up. The loco will move. However, when you release
the throttle the service brake will apply again. The service brake can only operate
when throttle is at 0. If you don’t hear the brake sound program CV115 with a
value of 2.
DYNAMIC BRAKING: You can use dynamic braking, F6 to reduce the speed. When
you turn on F6 the prime mover will notch down to 1 and you will hear the dynamic
brake sound and the loco will down. When you release F6 the loco will speed up to
the original speed. If you forget to turn off F6 and move throttle up it will automatically
disable the dynamic brake and loco will start to move. To apply the dynamic brake
again you have to cycle F6 off and on.
MRC will provide custom function re-mapping to meet your special railroading
requirements, if needed, for a reasonable fee.
Right side pickup
Front
light
Motor
Rear
light
Left side pickup
X X
X
X
X
X
Standard DC loco wiring diagram:
The ‘X’ marks indicate where to disconnect (isolate).
CV123 value
Diesel type
0
Dual EMD 567B prime mover1
1
Single EMD 567B prime mover1
2
Dual AlCo 244 prime mover2
3
Single AlCo 244 prime mover2
4
All sounds off
Right P/U
Left P/U
Motor
Motor
Headlight
Rear light
Com
Speaker 1
Acc1
Acc 2
Com
Speaker 2
If you use 1.5V bulbs or LED’s, you
should connect a 1k ohm resistor in
series to one of the leads to reduce
the voltage. You may need to adjust
CV120 to for LED use.If you use
Rule17 or the “dim-bright-off” light
effect you may also need to program
CV116 to adjust the brightness of the
dim light.
Value
Light effect
0
Normal on/off
1
Dynamo effect (fading)
2
Dim, bright, off cycle
3
Rule 17
4
Both headlights on
5
Ditch Light type A
6
Ditch Light type B
7
Gyralite
8
Mars Light
9
Prime strato light
10
Single strobe light
11
Double strobe light
12
Rotating beacon
13
Fred-flashing rear end device
14
Firebox Flicker A
15
Firebox Flicker B
16
Engine Exhaust Flicker
Light effect CV117, CV118, CV119