Delta Controls DNS-24, Application Manual

Page: 32 / 43

DNS-24, DNT-T103 & DNT-T221 Application Guide
Page 32 of 43 Document Edition 4.2
Physical Output Associated Output AV Min. Setup Variable Max. Setup Variable
OP1 AV1 AV24 AV25
OP2 AV2 AV26 AV27
OP3 AV3 AV28 AV29
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. T
IME
P
ROPORTIONED
(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 O
FF

At a controller value of 100% the outputs are always O
N

The controller value, from 0 to 100%, is mapped into the duty cycle directly (i.e., 50% is 5
seconds O
N
and 5 seconds O
FF
, 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)