Factory Configured Options - Siemens 353 User Manual

UM353-1B

4.0 FACTORY CONFIGURED OPTIONS

Factory Configured Options provide an easy way to configure a Model 353. In most cases a Factory Configured
Option (FCO) will provide a complete, functional loop controller, once the proper I/O connections are made.
Changes can be made to an FCO to meet individual requirements. The FCO listings on the following pages
document the parameters that are different than the default values listed in Section 3 Function Blocks. Some things
to keep in mind when making changes are:
a) All analog signals have been configured for an engineering range of 0.00 to 100.00. In most cases converting
to other engineering units will require changing only the range at the source (e.g. Analog Input function block).
All other blocks (i.e. Controller, Operator Display, Alarm, and Setpoint) that require knowledge of the range
have range pointers that point to the signal source (e.g. Analog Input block) for this information.
b) A number of function blocks have parameters that may be affected by range pointers. The range pointer limits
the setting of parameter values to within -10% to 110% of the range. If a range is changed, the current
parameter values will be changed to the same % within the new range. For example, if the range is 0.0-100.0
and the Alarm 1 Limit setting is 90.0 and the range is changed to 400.0-500.0 the alarm setting will be changed
to 490.0.
c) All controller (i.e. ID, PID, PD, PIDAG) outputs have an engineering range of 0.0-100.0 which will be
satisfactory in most cases since outputs normally convert to a 4-20 mA signal to drive a valve 0-100% Open or
Closed. However, when a controller is used in a cascade configuration, the primary controller output must be
configured for the same engineering range as the secondary controller process.
d) FCOs do not change Station parameters or calibration.
e) FCO 0 deletes all loops and sets all parameters in the STATN & SECUR function blocks to default values.
Calibration is not affected. As new loops and function blocks are added, parameters will appear at default
values.
April 2012
Factory Configured Options
4-1