Siemens AVS75.39 Series User Manual page 155

Burner control
Siemens
Building Technologies
3-position control and modulating UX
The actuator is controlled in PID mode. By setting the proportional band (Xp), the
integral action time (Tn) and the derivative action time (Tv), the controller can be
matched to the type of plant (controlled system). The actuator running time is also
set.
Neutral zone
For control operation, a neutral zone is used which is at +/- 1 K about the current
boiler temperature setpoint. If the boiler temperature stays in the neutral zone for
more than 16 seconds, the neutral zone becomes active and positioning pulses are
no longer delivered. As soon as the boiler temperature leaves the neutral zone
again, control is resumed. If the boiler temperature does not stay long enough in
the neutral zone, positioning pulses will also be delivered within the neutral zone.
Pins 3-position
Use
L1 Phase burner
Protective earth
N Neutral conductor
T1 Phase Release modulating burner
T2 Release modulating burner
S3 Input burner fault
4 Input burner hours run
QX1 Air damper modulating burner =
CLOSED
FX4 Phase Air damper modulating burner =
(T6) OPEN
QX4 Air damper modulating burner =
(T8) OPEN
Connection modulating UX
Use
L1 Phase burner
Protective earth
N Neutral conductor
T1 Phase Release modulating burner
T2 Release modulating burner
S3 Input burner fault
4 Input burner hours run
UX must be configured on an available Ux output.
User manual RVS43.345
The settings in detail
Socket Connector type
B AGP8S.07A/109
U AGP8S.03C/109
Z AGP8S.04C/109
Socket Connector type
B AGP8S.07A/109
CE1U2354en_021
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2013-09-02