Function of VS 300
49
Doku-Version 2.05 - Firmware 2.10 - 15. September 2017
4.5.5
Control algorithm with speed control
High pressure detected by an A/D converter is compared with the setpoint (see section 4.5.10 Determining the
High-pressure Setpoint). The following relationship applies:
Control
error
With a positive control error, a speed setpoint is calculated by a PI control algorithm and transmitted to the
speed adjuster via analog output (0-10 V). The speed adjuster controls fan speed to the defined setpoint.
T
ime
ZNR
.
51203
6
3
6
30
E0
VS 300
F
an
setup characteristic
Rege
l
ung
Enab
l
ing
speed ad
j
uster
Minima
l
speed
I
nput signa
l [
V
]
Request
With a negative control error, the speed adjuster is disabled by the first capacity stage of the allocated control loop
of the VS 300 when speed drops to minimal speed and the basic and variable unload times have elapsed.
T
ime
ZNR
.
51203
6
3
530
E0
VS 300 Speed ad
j
uster cutoff
Enab
l
ing
speed ad
j
uster
Minima
l
speed
Basic + variab
l
e
l
oad time
I
nput signa
l [
V
]
Contro
l
Request
Control can be influenced by three parameters:
Summary of Contents for VS 300
Page 8: ...vi Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...
Page 18: ...System Design of VS 300 10 Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...
Page 22: ...Application of VS 300 14 Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...
Page 160: ...Decommissioning and disposal 152 Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...
Page 166: ...Alarms and Messages of VS 300 158 Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...
Page 170: ...162 Doku Version 2 05 Firmware 2 10 15 September 2017 Notice ...