Siemens 9300, 9350, 9330 manual Using the Onboard Digital Inputs, Using the Optional Analog Inputs

Using the Onboard Digital Inputs 9300 Series User’s Guide

Using the Onboard Digital Inputs

The 9330 and the 9350 meters’ four onboard digital (status) inputs can be used for monitoring external contacts or pulse counting applications. These inputs can be used for dry contact sensing, but they cannot be used for voltage sensing applications.

The function of each digital input is controlled by the Digital Input modules S1 through S4. These modules are preconfigured at the factory, together with four Counter modules for counting status changes, and an External Pulse module for resetting the Counter modules.

The four Digital Input modules are factory configured as follows (refer to the online ION Programmer’s Reference for complete details on module function):

Setup Register	Factory Setting
Input Mode	Pulse (complete pulse as opposed to KYZ transition pulse)
Event Log Mode	Log Off (status changes are not logged)
Polarity	Inverting (hardware signal is inverted)
Debounce	0.010 (mechanical contact bounce, in seconds)
Port	S1 to S4 (specifies which hardware port the module controls)

Once you have connected the status inputs to the field equipment they are going to monitor, check the meter’s Digital Input modules to ensure they are configured appropriately.

Using the Optional Analog Inputs

The four optional Analog Input ports allow you to monitor a wide range of conditions, such as device cycles (RPM), flow rates, fuel levels, oil pressures and transformer temperatures. Both types of Analog Inputs (either 0-20mA or 0-1mA) are suitable for monitoring DC signals from transducers in your system. Analog Input modules control the analog input ports.

You use Designer to create and configure Analog Input modules. Set the Analog Input module’s Port setup register to the appropriate analog input port on the rear of the meter. Link the Analog Input module’s ScaledValu output to another module or framework for analysis.

NOTE

Your meter’s default template may already have a framework of pre-configured Analog Input and Analog

Output modules.

Page 124 Chapter 5 - Features and Applications