Gilderfluke&Co DMX-512 Input Servo Motor Controller - Manual (Page 10)

D) ServoMotor Power: This screw terminal is used to attach the power
supply that will be running the ServoMotors. The voltage output can
be anywhere from three to twenty-four volts, depending on the
ServoMotors you are using. Five volts is typical for most small
ServoMotors (five volt supplies are also much easier to find). The cur-
rent draw on most ServoMotors is at least an amp. Some larger
ServoMotors can draw far more. For most average sized ServoMotors,
if you allow half an amp per motor you will probably be safe. You
can tell if you are drawing too much power if the ServoMotors start
interacting. Some ServoMotors have their power attached to them
through connections separate from their control signals. These may
not need any connection to these screw terminals. If you have more
than one SER-DMX plugged together side-by-side, then only one of
the cards needs to have the ServoMotor Power attached to it.
E) Output Under Test LED: When any one of the sixteen servo channels
on the SER-DMX are selected for testing and adjustment, this LED will
show the position commands being sent to that servo. This LED ig-
nores all endpoint settings, and so dims from fully off to fully on as
the position command varies.
F) Board Error LED: This LED will flash when:
1) SER-DMX just booted
2) An error is found in the DMX-512 data checksum
G) DMX-512 LED: This LED will be lit when the SER-DMX is receiving DMX-
512 data.
H) ServoMotors: These sixteen connections are used to plug in your
ServoMotors. They are male headers on .1” centers, arranged in the
‘F’ or ‘Futaba’ style. The three pins used by each ServoMotor are as
follows:
1) Ground: This is usually a black wire. This pin is connected di-
rectly to the ServoMotor ground screw terminal. All sixteen
ServoMotors use the same ground.
2) ServoMotor Power: This is usually a red wire. This pin is connect-
ed directly to the ServoMotor Power screw terminal. All sixteen
ServoMotors use the same power.
3) Control Signal: This is usually white wire. This is the pulse width
modulated control signal for the ServoMotor.
There is nothing to keep you from plugging these pins in back-
wards or with reversed polarity, so be careful when attaching the
ServoMotors.
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