It is preferable (but not required) to provide an voltage from an external,
isolated power supply. If you aren't using an isolated supply for this enable
input, you can borrow some power from the Br-EFB to power them, as
shown above.
Until a 5-24 vdc voltage is applied to these terminals, the
ServoValve/Motor Controller Output terminals are attached through
electromechanical relays directly to 'Battery' terminals. The positive (+)
'battery' terminal is connected to all four positive (+) 'ServoValve'/'Motor
Controller' terminals. The negative (-) 'battery' terminal is connected to all
four negative (-) 'ServoValve'/'Motor Controller' terminals.
In some applications, the enable may not be needed. It still needs a
voltage applied to enable the Br-EFB to allow it to run. In this case, just
jumper power from any source (like the power terminals on positions #11
and #12 of this terminal block) to these inputs.
The 'Enable' switch shown above could be any type of switch:
1. A simple switch closure, used by the operators or maintenance
personnel to enable or disable movement of the actuators.
2. A 'pressure OK' switch, which closes only when the air or
hydraulic pressure has reached a level where the actuators will
operate properly.
3. An E-Stop button, where the movement can be disabled and
(optionally) the actuators return to a known position. There are
often several of these located at different points around an
attraction. In motion bases, there is normally one or more of
these inside the cabin, normally referred to as a 'chicken
switch'.
4. An 'intrusion' switch that disables the Br-EFB if someone gets
too close to the mechanism. Examples of this could be:
a) A light curtain that senses if guests try to reach into the
motion envelope of an animatronic figure
b) A switch on a door that is used to access the area under a
motion base.
c) A 'dead man' switch on the operators' chair or pressure mat
that disables the attraction if the operator leaves their work
station.
d) A pressure mat that covers the floor in an area where
Gilderfluke & Co.• 205 South Flower Street • Burbank, California 91502 • 818/840-9484 • 800/776-5972 • fax 818/840-9485
Br-EFB Manual / May 22, 2018 3:28 PM / page 30 of 142
