3-11
Model 0254
Section 3 Operation
Installation and Operation Manual
X-SE-0254-eng
Part Number: 541B129AAG
September, 2010
Batching
Batching is a discontinuous control process that
delivers the quantity set in the SP Batch. This
process is started using either the keypad or a
serial communication command. Batching is
terminated when the desired batch quantity has
been delivered, or any time before delivery is
complete by pressing the STOP. Refer to "3-6-3
Batch Control" on p. 3-18 for more details.
Blending
Blending is a continuous control process after
having been started that delivers a rate
proportion set in the SP Blend register, which is
referred to as the prevailing Blend Master input
rate. This process is started using either the
keypad or a serial communication command.
Blending is terminated any time by pressing the
STOP key from the home screen. Refer to "3-6-4
Blend Control" on p. 3-19 for more details.
SP VOR (Valve Override)
This value is set to Normal for standard TMF operation. VOR Normal
causes a VOR signal output voltage to be disconnected (i.e., floating). The
VOR function is used in TMF applications to override the normal analog
command signals, and is used for installation and system diagnostic
purposes.
Valve Open
The VOR output signal is connected and
provides a voltage > 8.0 Vdc, causing the TMF
valve to be fully open.
Valve Closed
The VOR output signal is connected and
provides a voltage < –4.0 Vdc, causing the TMF
valve to be fully closed.
SP Source
This control enables selection of the source from which setpoints may be
entered as either Keypad or Serial. When set for Serial,changing a setpoint
using the keypad is prohibited.
