TOHO ELECTRONICS TTM200 User Manual
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■ Secondary control proportional cycle
SEt04
CNt
Setting content
Initial value
41
t2
0.1 to 120.0 (seconds)
20.0
Set the secondary control proportional cycle.
Relay contact output, voltage output for SSR drive or open collector output has only the state of ON or OFF for output, and
thereby no proportional operation is offered.
Thus, to solve the issue, concept of time proportional operation is applied.
In the time proportional operation, ON/OFF is repeated in a proportional cycle (time cycle), where the ON state is maintained
for a particular time period and the OFF state for the rest of the period.
Example: When the proportional cycle is 20 seconds and the operating amount (MV) is 40 %, the ON/OFF period is as
follows.
ON: 8 seconds
OFF: 12 seconds
ＯＮ
ＯＦＦ
Proportional cycle