3-13
Section 3 Operation
Installation and Operation Manual
X-TMF-SLAMf-MFC-eng
Part Number: 541B032AAG
August, 2009
Brooks
®
Digital MFC's and MFM's
3-8-2 Low Setpoint Command Cutoff
When the Setpoint is derived from analog input, the Low Setpoint
Command Cutoff parameter sets the minimum valid value of Setpoint. If
the Setpoint value reported by the analog input is below the Low Setpoint
Command Cutoff parameter value, then the Setpoint will be set to zero.
3-8-3 Low Flow Output Cutoff
Whenever the measured flow is below the Low Flow Output Cutoff
parameter, the Flow Output will be set to zero.
3-8-4 Flow Output Damping
The Flow Output can be damped from 0 to 10 seconds.
3-8-5 Adaptive Control
Adaptive Valve Control is a means of dynamically adjusting valve offset
and span in response to changing process conditions. Options for Adaptive
Control are: On/Off, Adjust Offset Only, Adjust Offset and Span.
3-8-6 Flow Totalizer
A Flow Totalizer will be provided and maintained in Non-Volatile Memory.
The update rate of the totalizer in Non-Volatile Memory will be 5 seconds.
3-8-7 Flow Output Conditioning
When this feature is enabled and a change in setpoint is detected, the Flow
Out signal will equal setpoint for a configurable time period. At the end of
the time period, the Flow Out signal will indicate actual flow. A change of
setpoint is defined as a change of more than 1% of full scale.
3-8-8 Flow Signal Lock-in
When this feature is enabled, the Flow Out signal will “lock-in” to the
setpoint value whenever the error between measured Flow and Setpoint is
less than a configurable value.
3-9 PC-based Support Tools
Brooks Instrument offers a variety of PC-based process control and service
tools to meet the needs of our customers. SmartDDE may be used with any
unit supporting RS-485 in a multidrop configuration, thus allowing users to
control and monitor their Brooks devices. The Brooks Service Suite (Analog I/
O versions only) may be used to monitor, diagnose, tune and calibrate Brooks
devices. The Brooks Service Suite interfaces with Brooks products via a
special service port. The Brooks Service Tool (BST) may be used for devices
equipped with digital communications to perform many of the same tasks as
the Brooks Service Suite.
