Emerson MultiFlex ESR, Installation And Operation Manual, Page: 14 / 21

9 • MultiFlex ESR I&O Manual 026-1720 Rev 4 06-APR-2010
Under the Setpoints Setup screen (C3 tab), the
TR field sets the throttling range of the Multi-
Flex ESR temperature control. The throttling
range is the number of degrees between a 0%
and 100% valve aperture in the Proportional
mode of PID control. In most cases, the default
value (10°F) is sufficient. If a different TR is
desired, enter it here.
C. Additional Setup Screen: MultiFlex ESR
Under the More Setup screen (C0 tab), set the
following parameters described in
Table 6-1 .
Temp Fail EEPR % - Failsafe setting that is
used exclusively when the valve type ( Valve
Mfg ) under the MultiFlex ESR Valves Setup
screen is set to Other . The value set in this field
will be the position the valve goes to if the case
temperature sensor fails or the MultiFlex ESR
board goes offline. This failsafe setting is always
available.
CommFailDefrost - If set to ENABLE
(default), the scheduled defrost will occur if the
board is in comm failure (offline). If set to
DIS-
ABLE , the circuit will disable any scheduled
defrost if the MultiFlex ESR board containing
the valve for this circuit is in comm failure (off-
fline). An advisory will be logged if a scheduled
defrost is disabled due to a MultiFlex ESR
comm failure. When CommFailDefrost is set to
DISABLE , the advisory priority and type can be
configured: The following two advisory parame-
ters will appear:
• AdvPrior - lets the user set the priority of
the Notice or Alarm logged if a defrost is
disabled due to a MultiFlex ESR comm fail-
ure.
• AdvTyp - lets the user select between
Notice or Alarm to be logged for the event
described above.
Figure 6-6 - More Tab: Additional MultiFlex ESR Setup Screen
NOTE: There are multiple screens under the
CO: MORE tab. Use F1 and F2 to toggle
between available screens under this tab.
Standard
Circuit Valve
Parameters
Description
Min Valve % The minimum percentage the valve
can go to during refrigeration con-
trol. The valve will go to 0% (fully
closed) during defrost regardless of
what the minimum valve % has been
set to.
Max Valve % The maximum percentage the valve
can open during refrigeration con-
trol.
Pulldown % The percentage the valve will be
open during the pulldown period af-
ter defrost.
Max Pulldown Tm The maximum amount of time the
valve will remain in pulldown fol-
lowing a defrost. If exceeded, the
valve will resume PID control. Pull-
down will terminate earlier than the
max pulldown time if the case tem-
perature reaches setpoint.
Table 6-1 - MultiFlex ESR Valve Parameters - E2 More Tab