Despatch 1500 Controller - Manual (Page 26)

Page 20 Despatch/Watlow 1500 Control Instruction Manual
Wait
Condition
FUNCTION
Display Description
Channel 1
Actual W1
Channel 2
Actual W2
Wait for
Event WE 1 = wait for a closed switch condition.
0 = wait for an open switch condition at the Event input.
Enter 0 by pressing the ENTER key when the Data Display is
blank, or when a 0 is in the display.
Real Time
of Day WH,
WM,
WS
When waiting for Time, program all three units (HR-MN-SC).
If you program only 53 for minutes, but enter nothing for
Hours or Seconds, the programmed time will be 53 minutes
after midnight, 00 53 00.
If you press ENTER when WH, WM or WS is shown, you
could end up waiting for midnight when you wanted wait for
time ignored.2
Table 8 Wait Steps
Wait Steps
The Wait (WT) submode allows the Watlow 1500 to wait for:
C Channel 1 and/or Channel 2 actual process inputs,
C the real time of day (not elapsed time as in set point
steps).
You can wait for one or two of these conditions, or all of
them. If you don't need one wait condition, just press the
FCTN key and the next Wait prompt will appear. By doing
this the particular wait function will remain blank and be
ignored.
A Wait Step maintains the same set points and event output
conditions that existed at the end of the previous step. To
establish new set point values, place a short (1 second) step
containing the conditions you wish to achieve immediately
before the Wait Step.