SANDPIPER ELECTRO-PNEUMATIC SPEED CONTROL SYSTEM User Manual
Page 4
spdctrol-rev0808
Speed Control Page 4
WARREN RUPP, INC. • A Unit of IDEX Corporation • P.O. Box 1568 • Mansfi eld, OH 44901 USA • (419) 524-8388 Fax (419) 522- 7867
www.warrenrupp.com
AUTOMATIC OPERATION
This unit can be set up in the Automatic Mode for process
control (see Fig.7). In the Automatic Mode, the speed controller
will accept 4-20mA input signal to adjust the speed to meet the
application requirements.
The box is punched and plugged with contacts provided,
to accept 20-24AWG, 2-conductor cord. The input signal to the
speed control is usually generated from a programmable or
process controller which manages the overall application. There
can be numerous sensing devices used to control application
requirements, feeding signals to the programmable or process
controller. This controller then provides a 4-20mA signal to the
Warren Rupp Speed Controller, increasing or decreasing the
speed to meet demands of the application.
The sensing devices might include any of the following:
1. Pump shaft proximity switch for sensing pump
speed.
2. Pressure transmitter for sensing system pressure,
suction pressure, or discharge pressure.
3.
Timer.
4. Level control sensing device.
5. Flow sensing device.
6. Temperature probe.
7. Ph sensor.
8. Weight scale.
This is a partial list of possible devices.
MANUAL
Proximity Switch
or
Pressure Transducer
or
Timer
or
Level Control
or
Flow Sensor
Speed Controller
4-20mA
signal
Process
Controller
AUTOMATIC INSTALLATION POSSIBILITIES
Pump
Figure 7
AUTO