Modulation Starting Time; Modulation Starting Load - Rotex Controller Series Product Documentation

EbV
8.1.8.5

Modulation starting time

The starting time parameter determines the length of the start-up phase in modulation mode so that a stable
start-up is ensured. As soon as the set starting time has expired, the modulation switches to its normal
control characteristics defined by the modulation parameters.
8.1.8.6

Modulation starting load

The starting load parameter determines a percentage setting for a fraction of the modulation running time
during the start-up phase. At a setting of 0%, the actuator valve remains closed continually during the start-
up. As soon as the set starting time has expired, the modulation switches to its normal control characteristics
defined by the modulation parameters.
Modulation
Starting load (%)
42 s
On
Basic load
Operation:
Note on operation
Modulation P-band Xp (%/K)
Modulation sample time Ta
Modulation I-band Tn (Reset time)
Modulation running time actuator
Modulation starting time
Modulation starting load
Connecting THETA UNIT
If installing the THETA UNIT type, connect as follows:
• Connection burner ON to tx of burner 1 (see 12.2.3, connection 4)
• Connection modulation OPEN to tx of burner 2 (see Chapter 12.2.3, connection 5)
• Connection modulation OPEN to tx of burner 2 (see Chapter 12.2.3, connection 5)
Upward modulation
Downward modulation
Start-up
Adjustment
phase
60 s t (s)
90 s
t (s)
Key / parameter tree
HEAT GENER.
HEAT GENER.
HEAT GENER.
HEAT GENER.
HEAT GENER.
HEAT GENER.
Product documentation THETA NORM/UNIT
Parameter
PARAMETER 19
PARAMETER 20
PARAMETER 21
PARAMETER 22
PARAMETER 23
PARAMETER 24
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