Users manual

xxii
SCADA 3000 User’s Manual
Communications Wiring ..........................................................................................23-3
Bus Termination ..................................................................................................23-4
Sensor/Transducer Wiring .........................................................................................23-5
General Wiring Considerations ...........................................................................23-5
Normally Open/Normally Closed Dry Contacts ..................................................23-5
1OK Thermistors .................................................................................................23-6
Analog Voltage Output Transducers (0-5VDC) ....................................................23-6
4–20mA Current Loop Transducers .....................................................................23-7
How the Universal Input Module Works ....................................................................23-8
Specifications .............................................................................................................. 23-9
Chapter 24: THERMOCOUPLE INPUT MODULE (discontinued) ............ 24-1
Introduction ................................................................................................................24-1
What is a thermocouple? ....................................................................................24-1
Installation ..................................................................................................................24-1
OPERATING ENVIRONMENT .................................................................................24-1
MOUNTING THE THERMOCOUPLE INPUT MODULE ..........................................24-2
Power Supply and Grounding ............................................................................. 24-2
Communications Wiring ..........................................................................................24-3
Cabling Notes ..................................................................................................... 24-4
Bus Termination ..................................................................................................24-4
Thermocouple Wiring Information ...........................................................................24-5
How the Thermocouple Input Module Works .............................................................24-6
Programming the Thermocouple Module ....................................................................24-6
Specifications .............................................................................................................. 24-8
Chapter 25: PULSE COUNT MODULE .................................................... 25-1
Introduction ................................................................................................................25-1
Installation ..................................................................................................................25-1
OPERATING ENVIRONMENT .................................................................................25-1
MOUNTING THE UNIT ..........................................................................................25-1
Power Supply and Grounding ............................................................................. 25-2
Communications Wiring .............................................................................................25-3
Bus Termination ..................................................................................................25-4
Sensor/Transducer Wiring ...................................................................................25-4
Adjusting the Trimpot (Filtering) ..........................................................................25-5
Application: How the Pulse Count Module Works .....................................................25-5
Calibration ...............................................................................................................25-6
Specifications .............................................................................................................. 25-7