WattMaster WCC III part 4 - Manual (Page 186)

WCC3.EXE SCREEN DESCRIPTIONS
WCC III Technical Guide 3-182
Current source status:
This fi eld will display the current active state of the value that was
programmed into the “Operation based on” fi eld.
Current Proof of fl ow status:
This fi eld will display the current active state of the value that was
programmed into the “Proof of fl ow” fi eld.
Lead/Lag ratio:
This fi eld has four user-selectable options—50-50, 60-40, 70-30,
and 75-25. The fi rst number corresponds to the Lead (Primary)
percent of operation, and the second number corresponds to the
Lag (Secondary) percent of operation. Because this is a choice
fi eld, the list of available choices will be displayed at the bottom
of the page.
<50-50, 60-40, 70-30, 75-25>
Make your selection by pressing the
once for each
choice until the desired event type has been selected, and then
press
.
Proof of fl ow delay:
This is delay in minutes before switching operation of the Lead/
Lag control due to lack of fl ow. Could be hooked to a sail type
switch for airfl ow or an “ON/OFF” pressure switch for piping. If
there is no proof of fl ow within this amount of time the operation
will switch to either Lead or Lag control depending on the current
state of control.
Example: if currently in Lead control and there is no proof of fl ow
after the programmed amount of time it will switch to Lag control.
If proof of fl ow is lost during the Lead (or Lag) control it may
take up to the programmed proof of fl ow delay time in minutes to
switch to the Lag (or Lead) control.
NOTE: If the proof of fl ow delay has not been programmed (0
minutes) then this global will use 1 minute as the proof of fl ow
delay.
Current Lead/Lag ratio:
The is the percentage of the Lead control being “ON” verses the
Lag control being “ON”. It is calculated by Lead time / (Lead
time + Lag time). This fi eld is reset by the Command fi eld being
RESET.
Current run time:
List the current runtime of the lead or lag (Primary or Secondary)
control in minutes. This fi eld is reset by the Command fi eld being
RESET.
Current Lead status:
Displays the current state of the lead device (Primary) and should
be either “ON” or “OFF”. Either the Lead or Lag should be “ON”
but not both. The same applies to being “OFF”.
Current Lag status:
Displays the current state of the lag device (Secondary) and should
be either “ON” or “OFF”. Either the Lead or Lag should be “ON”
but not both. The same applies to being “OFF”.
Current setup status:
The current setup status is the status of the operation, and
will be listed as the following: OK, Bad Source, Bad Proof,
or Bad Next structure. When the current setup status is OK, it
displays blank. When the current setup status is Bad Source,
it displays “Bad Source” which means that the source address
is not a correct binary address. When the current setup status
is Bad Proof, it displays “Bad Proof “which means that the
proof of fl ow address is not a correct binary address. When the
current setup status is Bad Next structure, it displays “Bad Next
Structure” which means the next structure is not EXTERNAL
mode. The Lead-Lag mode has two outputs. The next global
binary has to be set to EXTERNAL mode for this mode to run.
Current Lead run time:
Displays the current “Lead” (primary) run time in hours. This fi eld
is reset by the Command fi eld being RESET.
Current Lag run time:
Displays the current “Lag” (secondary) run time in hours. This
fi eld is reset by the Command fi eld being RESET.
Command:
Selects the “Reset” command for the resetting of the runtime fi elds
for Current Lead Run time fi eld, and the Current Lag Run time
fi eld. Because this is a choice fi eld, the list of available choices will
be displayed at the bottom of the page.
<____, RESET>
Make your selection by pressing the
once for each
choice until the desired event type has been selected, and then
press
.
Binary Global Lead Lag Mode Screen