Table of Contents
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Chapter 1
What is the Configurable Flowmeter Module?
Understanding Module Input
Capabilities
Understanding Module
Output Capabilities
12
The module accepts input for up to two channels (mode dependent). Each of
the input channels can connect to:
•
Magnetic Pickup - 50mV trigger
•
TTL output - 1.3V trigger
•
Preamp outputs - 4V trigger
You configure the module's two input channels for your specific application(s).
Each input channel has two input selections:
•
Flowmeter Input (F0 & F1) - Connect input device to this input.
•
Gate Input (Z0 & Z1) - Accepts 4-40V DC input pulses from open
collectors or external contact closures. These inputs are used in Totalizer
mode to interface to a prover when a prover is enabled.
The module has two assignable outputs. These outputs are designed for
applications that require fast response. The outputs:
•
are electrically fused/current limited to 4 amps; the total output
combination is limited to 7 amps.
•
can be assigned to any input channel with user-defined trigger
parameter (see
•
are current sourcing at 10-31.2V DC (1 amp maximum per output).
•
must be connected to an external power supply.
•
can be forced ON or OFF by the program.
IMPORTANT
You can assign both outputs to a given channel; however, you
cannot use the same output with two different channels.
Table 1 - Assign the 1756-CFM Module Outputs
In this operational mode
Totalizer
High Resolution Frequency
Rockwell Automation Publication 1756-UM010C-EN-P - June 2021
Table
1).
You can assign outputs that are configured to
trigger
Frequency (acceleration)
Prover status
Fill control
Frequency
Frequency rate of change (acceleration)
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