Alternate Fan Banks - Advanced Power technologies TTC-1000 Instruction & Operation Manual

4.11 Alternate Fan Banks

The TTC-1000 can be programmed to alternate the energization between two
outputs. This feature is particularly useful when it is desirable to insure a fan
bank is regularly exercised. Outputs 5 and 6 do not have this option.
You can choose between seven (7) alternate options as shown in table 4.4.
As an example, if Alternate between OUT1 and OUT4 is selected, the first time
OUT1 picks up, the output relay associated with OUT1 will pick up. If OUT4 picks
up while OUT1 is picked up, the relay associated with OUT4 will pick up.
Once both OUT1 and OUT4 drop out, the next time OUT1 picks up the relay
associated with OUT4 will pick up. If at sometime in the future OUT4 picks up
when OUT1 is already picked up, the relay associated with OUT1 will pick up.
The cycle repeats when both OUT1 and OUT4 have dropped out.
Programming from the front panel, press the
156 is displayed:
Press the YES button. The first character will flash. Use the
to scroll between 1 – 2, 1 – 3, 1 – 4, 2 –3, 2 – 4, 3 – 4, or DSABL:
Press YES when you have made the correct selection.
For programming from a PC just type
the setting for ALTERNATE on the
"Enter:" line as follows:
Enter:156/1
This will set ALTERNATE=1-2.
PRGM SETTING 156
A L T E R N A T E D S A B L
PRGM SETTING 156
A L T E R N A T E 1 - 2
Option
0
1
2
3
4
5
6
NOTE: Outputs 5 and 6
cannot be set to alternate
Table 4.4: Alternate Options
70
 
or arrow button until the setting

or
Alternate
None
1 – 2
1 – 3
1 – 4
2 – 3
2 – 4
3 – 4

arrow buttons
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