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Siemens Building Technologies
SED2 variable speed drives
CM1U5192en
HVAC Products
Programming
01.2002
P2378
Staging frequency
This parameter is defined as a particular percentage of the maximum output frequency.
This determines the frequency used to switch on or off the relay (DOUT1 or DOUT2)
during staging or destaging.
See the diagram below.
t
t
f
f
51
92
D
04
en
PID Off
Relay On
PID On
PID Off
Relay Off
PID On
VSD freq.
VSD freq.
Staging freq.
Max. freq.
Min. freq.
Staging freq.
Max. freq.
Min. freq.
Factory setting: = 50 % (defined as a percentage = 100%, at fmax = 50 Hz).
P0731 (DOUT1)
Function of the digital output 1 (relay 1)
Set parameter to 2379[0] (relay 1 to motor 1).
Factory setting: 52.3 = VSD fault enabled.
P0732 (DOUT2)
Function of the digital output 2 (relay 2)
Set parameter to 2379[1] (relay 2 to motor 2).
Factory setting: 52.2 = VSD in operation.
Complete parameter setting by changing over to automatic control.
Содержание SED2 Series
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