DNS-24, DNT-T103 & DNT-T221 Application Guide
Page 32 of 43 Document Edition 4.2
The value (in seconds) is shifted by two decimal places when entered in the variable. Default values are,
Minimum PWM Value = 59 Maximum PWM Value = 293
3. TIME PROPORTIONED (TP)
The DNT-T103 can have up to two stages of Time Proportioned heat (Outputs 2 and 3), while the
DNT-T221 can have one stage (Output 3). These are similar to the PWM outputs except:
The cycle time is fixed at ten seconds
At a controller value of 0% the outputs are always OFF
At a controller value of 100% the outputs are always ON
The controller value, from 0 to 100%, is mapped into the duty cycle directly (i.e., 50% is 5
seconds ON and 5 seconds OFF, for a single output).
10 Seconds
Off
On
20%
2 seconds 8 Seconds
Time Proportioned
input
0%
100%
When the Input = 0%, the Output is Off all the time
Cycle time is fixed at 10 seconds
When the Input = 100%, the Output is On all the time
Output Staging is limited by the Setup 6 variable (AV29)
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