Spectrum Controls 1769sc-IF8u - Manual (Page 11)

Chapter 1 Chapter 1 Chapter 1 Chapter 1 Chapter 1
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This chapter describes the 1769-IF8u Universal Input Module and explains
how the module reads current, voltage, RTD, Resistance and
thermocouple/millivolt analog input data. Included is information about:
· the module’s hardware and diagnostic features
· an overview of the system and module operation
· compatibility
G e n e r a l G e n e r a l G e n e r a l G e n e r a l G e n e r a l
D e s c r i p t i o n D e s c r i p t i o n D e s c r i p t i o n D e s c r i p t i o n D e s c r i p t i o n
The universal input module supports current, voltage, RTD, resistance,
thermocouple and millivolt type inputs. The module digitally converts and
stores analog data from any combination mentioned above. Each input
channel is individually configured via software for a specific input device,
data format and filter frequency, and provides open-circuit, over-range and
under-range detection and indication.
Note: There are 8 on-board jumpers to configure between voltage and
current modes. In current modes the module measures the input current
across a low-drift precision resistor, measures the voltage, and converts to
a current reading. For any input other than direct current measurements,
the jumpers must be configured for voltage mode..
Input Types and Input Types and Input Types and Input Types and Input Types and
R a n g e s R a n g e s R a n g e s R a n g e s R a n g e s
The tables below list the input types and their associated ranges.
Input Type Ohm s
Resistance 0-150, 0-1000, 0-3000
RTD Type Temperature Range (*C)
Copper 426 -100 to 260
Nickel 618 -100 to 260
Nickel 672 -80 to 260
Nickel-Iron 518 -200 to 200
Platinum 385
-200 to 850
Platinum 3916 -200 to 630