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Order Toll-Free: 1 800 CJA 1910 · www.cjanderson.com · Fax: 1 708 867 5467
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VVVF Variable Voltage Variable Frequency
For traction elevators traveling faster than 100 FPM. Solid State
controls, dynamic braking and force guided relays make our
controllers the most solid state in the industry. For elevators that
are under 150 feet per minute no encoder feedback from the
motor is required. For speeds 150 feet per minute and above we
recommend that you use encoder feedback. We can provide a
new motor and encoder for your elevator system along with a
new controller.
RTC-1 - Soft Start For One Speed Motors
For traction elevators that travel less than 90 FPM. With this
system, stopping of the elevator occurs when the elevator
comes to the floor and the door zone sensor is activated. The
brake sets and the elevator stops. The slower the elevator
elevator travels the better this controller stops. Motor control is
by Power Electronics Smooth Control or soft start from one of
the other soft start manufacturers.
RTC-2 - Soft Start For Two Speed Motors
For traction elevators with speeds less than 180 feet per minute.
This is a very good alternative for older elevators. Soft start
units are controlled by the Power Electronics 2 Speed Smooth
Move. It slowly ramps up into the first motor winding and then
the second and it also has the ability to slow down when a
selector is added to your elevator. We can provide this as a PLC
Based system or relay logic without Fire Service for repair or
like for like replacements.
Hydraulic - Soft Start, Wye Delta or SOL
Our CJA controllers for hydraulic projects are ideal for direct
replacement or new installations and have solid state industry
type PLC and components that are readily available and off the
shelf in the event of a shut down. Available with Soft Start, Wye
Delta or Straight Accross The Line, we can build a controller to
meet your specifications.
VVVF Line Regen
Line Regeneration with elevator controllers is being specified
for more and more projects. Instead of energy transforming into
heat when the elevator stops and dissipating into a resistor bank,
the energy that's created when the elevator stops gets pushed
back into the AC line through a REGEN unit. The upfront cost
associated with line regenerative drives is more than a
traditional VVVF controller. However over time you'll know
that your elevator is conserving what used to be wasted energy
and helping in your effort to keep your building green.
SCR - For DC Motors
They are still out there, elevators running with DC motors. We
still build elevator controllers for these types of applications
utilizing a solid state SCR Drive. We also use PLC Based logic,
encoder feed back and recommend you installing a new line
isolation transformer to ensure that noise and interference is
kept to a minimum. There's still a market for DC controllers, it's
just not as large as for VVVF AC elevators.
Microprocessor Control (PLC)
CJA utilizes the best software and PLC's to achieve the best
performance for your elevator. Each Control System has a
"brain" which contains a non volatile memory program that
cannot be erased in the event of a power outage.
Microprocessor control allows CJA to upgrade programs in the
future to allow for code changes and new elevator requirements.
We also manufacture controllers using PLC's that are industrial
type. One of the most popular among the ones we build with is
Allen Bradley.
Relay Logic
Need Relay Logic? We still make them. Keep in mind that the
price of a Relay based system when compared to a
Microprocessor based system is actually more due to an
increased number of relays and time involved with
manufacturing and testing the controller. Also note that certain
Fire Service Codes are not available with this type of logic, and
Single Automatic Pushbutton operation can only be
accommodated with elevators over three floors. Ideal for
elevator speeds under 100 Feet Per Minute and using motor
controls that are anything but VVVF. Perfect in some cases for
like for like repair replacements.
Touchscreen Diagnostics
CJA Microprocessor control systems come equipped with touch
screen controls for monitoring the elevator and reporting faults
of the system, such as bad door interlock contacts. Each LCD
screen is easy to navigate through and also allows the mechanic
the ability to change simple parameters such as door timing and
alternative floor for fire service. This is a standard feature on all
PLC based controllers.
Easy to Wire Terminal Blocks
Easy to view and wire terminal blocks make wiring a breeze.
We specifically use easy to wire blocks to help with wiring.
Controller Air Conditioners & Heaters
We can upon request provide cabinet cooled air conditioners to
prevent damage to both microprocessor and solid state motor
controls for excessively hot machine rooms. Available in
NEMA 1, 4/12 and 4X, we can easily provide them should you
require one. Each unit is wired directly in to the control system
and comes with a manually adjusted thermostat. Heaters are
also available for colder climates as well.
Motor Control
Constant Pressure, Car Switch, Single Speed, Two Speed,
Hydraulic, Variable Frequency Variable Voltage or DC SCR
Applications. We can manufacture your controller for any
horsepower or elevator speed you need. This is dependent upon
what type of system you have.
These are just a few of the many features available to you when
you purchase a CJA Control System. Each control system is
built to your job specifications and tested prior to shipping.
Call today for controller pricing on your next project.
Controller Types
Features & Options