|
 A
speed control and display system for mechanical and hydraulic
variable speed drives.
The
CST125 controller provides precise digital speed selection
using hydraulic or mechanical variators and standard AC servo
meters.
A
pulse feedback signal is derived from the controlled drive
by a contactless proximity sensor. Accurate speed control
and load sensing is thus achieved.
The
LED display gives continuos indication of speed attained and
reference speed on demand. A system of digital programming
via the keypad enables the CST125 Servo Controller to be tailored
to individual drives.
Features
include:
- Precise
speed selection
- Integral
LED display
- Uses
standard AC "pony" monitor
- Contactless
load speed sensing
- Up
to 5 pre-set speeds or ratios.
- Suitable
for OEM or retrofit applications.
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| CST225 Actuator Controller |
 A
position controller for actuators, energy monitors or other
feedback systems. The CST225 digital controller is designed
to control actuators operated by standard AC servo motors.
A
feedback signal from a potentiometer, voltage or current,
is used to provide the controller with positional information.
The reference signal may be entered digitally via the keypad
or an optional potentiometer may be used. The LED display
provides an accurate indication of performance.
The
CST225 provides precise digital selection of speed, position
and other variables, using standard AC servomotors or solenoids
to operate the controlling actuator.
Using
digital frequency comparison, the system compares the reference
signal entered at the keypad with a feedback signal from a
frequency which relates to the variable being controlled.
Interface modules are available to accept feedback signals
from potentiometers or voltage and current signals.
The
servo motor is switched by relays using an error dependent
pulsing technique. Comprehensive programming facilities enable
the CST225 to be matched to many different control requirements
using the parameter programming facility.
The
CST225 Digital Controller features:
- Integral
LED display
- Parameter
programming from the keypad.
- Up
to 5 pre-set speeds or ratios
- Keypad
for external reference
- Dual
'deadband' system
- Integral
load sensing
- Precise
digital control
- Choice
of parameters for optimum control
- Standard
AC induction motor can be used as a servo.
- Continuos
and on-off correction modes give high accuracy
- Ideal
for retrofit applications
- Programmable
for individual installations
- Uses
standard AC operating motor.
| Specifications: |
| SUPPLY: |
115
or 230 Volt AC, with a 24 Volt AC option |
| ENCLOSURE: |
144
x 96 x 155 mm deep |
| PANEL
CUT OUT: |
137
x 90 mm |
| TEMP.
RANGE: |
0
- 50 °C |
| DISPLAY: |
4
digit 14 mm LED |
| ACCURACY: |
±
1 digit |
| SENSORS: |
Standard
proximity sensors |
| RANGE: |
20
- 9999 rpm |
| PRE-SET
SPEEDS OR RATIOS: |
5 |
| MODES: |
Keypad
or external reference |
| SERVO
OUTPUTS: |
2
relays, 240 Volt AC at 0.1A |
| ANALOGUE: |
Output
Option |
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| MSS8
Speed and Position Controller |
 The
MSS Servo Process Controllers are suitable for use in a wide
range of industrial applications. They operate by comparing
the demand signal set on the control panel with the value
of a reply or feedback signal, which is obtained from the
process being controlled. If two signals vary by more than
a pre-set amount the controller will produce an output by
energising a 'high' or a 'low' relay. The output may be used
to drive a suitable actuator which in turn, will adjust the
level of the process variable until the demand and feedback
signals are equal.
With
this type of control system, processes may be set to operate
at desired values and be maintained there automatically.
The
feedback transducer may be a variable resistor or any other
device capable of producing a suitable electrical signal.
A power supply suitable for operation from three phase mains
with a reversing contactor assembly can also be supplied.
Applications
include: Speed control via variable speed gearboxes, Valve
position control, Automatic voltage control, Damper control,
Out of limits detector, Positioning of hydraulic or pneumatic
actuators, Control of temperature, pressure, level, speed,
etc.
Internal
trimming facilities are available as standard and may be used
for:
- Input
voltage or current scaling
- Deadband
adjustment
- Upper
and lower unit setting
- Offset
control
- Transducer
range matching
- Ration
control of multiple systems
| Specifications: |
| SUPPLY: |
110-240
V AC, 6VA, 50/60 Hz |
| TEMP
RANGE: |
0
to +50 °C |
| ACCURACY: |
Better
than ±1.5% of range |
| ENCLOSURE: |
235
x 160 x 125 mm high overall |
| INPUTS: |
1.
Potentiometers between 1K and 10K ohm.
2. 0 - 10 V DC
3. 0 - 10 ma or 4-20 ma DC
4. Transducers for temp., pressure etc.
|
| OUTPUTS: |
Two
relays rated at 1 amp AC resistive, each with two sets
of changeover contacts. |
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