The lighted
LCD display
(the light can be switched off) leads the user in plain text
instructions through the various programming steps. The instructions are available either
in english or german language.
The motoryoke has a mechanical and electronical
torque delimitation
on the PAN and
TILT axle. The mechanical torque limitation is realised with a friction
clutch
and prevents
a personal injury of people working on the yoke. Furthermore the drives and gearboxes
will not be damaged when moving the yoke in case of power off.
The
electronical torque delimitation
switches off the motors in case of blocking (e.g.
blocking because of moving onto a wall or decoration). The display shows an appropriate
error message.
The
controlling
of the two main axles (PAN and TILT) is done with 2 DMX-channels per
axle. With only one channel (8-Bit) a resolution of 256 steps could be realised. With two
channels (16-Bit) a resolution of
65536 steps
is possible. The first channels of each axle
represents the rough position information (at 360° range of rotation about 1.4 degrees per
step). The second channel represents the fine position information. The speed of the
motoryoke is determined with one channel (PAN and TILT together) or with two channels
(PAN and TILT separated).
The DMX-standard in lighting
Because of many problems with
analogue
data-signals from the control panels to the
dimmers the DMX-standard was developed in 1990. DMX only needs
two
wires to control
up to 512 dimmers digitally. On the other hand, the old analogue method needs one wire
for every dimmer. Many kilometers of cable have been saved.
The DMX-signal is based on the industrial
RS485
interface. It is designed for maximum
lengths up to 1200m. Normally this length is under condition in theatre or studio
not
possible
(strong electrical fields because of the HMI lamps). As a result of internal tests
we recommend a maximum length of
200m
(only DMX line, 5pin). On every DMX
transmitter a maximum of 32 DMX receiver can be connected. All devices must be
connected in a
row
(cabling from A to B, from B to C, from C to D etc.). The last device in
such a row must be terminated with a resistor (470 Ohm). If more than 32 devices should
be connected a booster or
splitbox
must be inserted.
A
splitbox
is a device with one DMX input and several DMX outputs. The signal is
refreshed. Thus it is possible to use different DMX lines.
The reliability of data transmission was increased because of using DMX. One of the
greatest advantages is universally usefulness. Now devices from different manufacturers
can be controlled by every control panel.
Motoryoke MB D1 V4.56 Rev 1.06 15
