Periodic Exercise Of Cooling Fans; Cooling Fan Alarm - Advanced Power technologies TTC-1000 Instruction & Operation Manual

Kk /0/1/n where kk
2
Use the INVERT OUTn setting to cause the output relay to drop out when either
temperature set point is achieved. The resulting Boolean equation is:
OUT = !(Temperature Set Point
n
4.9.10.2

Periodic exercise of cooling fans:

Use a time set point with the temperature set point, controlling the cooling fans,
to exercise the fans on a daily basis. This is especially useful in areas where you
might be running the fans continuously during the cooler months of the year. The
Boolean equation to accomplish this task is:
OUT = Time Set Point
n
Therefore, the cooling fans will come on when either the over temperature
condition is achieved or the time of day is in between 02:00 to 03:00 hours.
To program the controller simply assign the time and temperature set points as
follows:
Using the LCD:
Using RS232: mm/02:00/03:00/n where mm=setting line # and n=1,2,3,4,5,6
Kk/0/1/n
To operate the output in fail-safe, just invert the expression using the output
INVERT setting. Remember to use the B contact of the output relay.
4.9.10.3

Cooling Fan Alarm:

This example shows how to generate an alarm when cooling is commanded but
the measured current as sensed by the Aux CT is not within a specified range.
The Boolean equation for this function is expressed as:
OUT = (Load Set Point
n1
First you must program Load Set Point
pickup current less than dropout, and Load Set Point
are programmed the two load set points must be assigned as OR to OUT
follows:
Using the LCD:
Using RS232:
=Parameter # and n=1,2,3,4,5,6
2
kp1
+ Temperature Set Point
m
02:00 to 03:00 > OUT
SP + OUT
k n
where k=parameter # and n=1,2,3,4,5,6
+ Load Set Point
m1
LSP + OUT where m1=1,2 and n1=1,2,3,4,5,6
m1 n1
LSP + OUT where m2=1,2 and n1=1,2,3,4,5,6
m2 n1
+ Temperature Set Point
kl
n
) 
OUT
m2
for an underload condition, that is the
m1
for overload. Once these
m2
67
)
kp2
n2
as
n1
V6.70 20131017