Siemens SIPLUS HCS Series Operating Instructions Manual page 40

Application planning
4.4 Installation location
Electromagnetic compatibility (EMC) and overvoltage protection
NOTICE
Damage to the device
Inadequately dimensioned overvoltage protection can result in severe damage to the
device.
Therefore ensure that the overvoltage protection is adequate (see section
Connect 24 V DC power supply (Page 77)).
Power loss POM4220 Lowend, POM4220 Midrange phase angle control, POM4220 Highend and
POM4220 Flexible
When planning and designing the cabinet cooling, take into consideration the power loss of
the power output modules (POM). The power loss of a POM is calculated as follows:
POM version
•
•
•
•
You can find the power rating under POM4220 power rating (Page 43).
Power loss of POM4320 (combined mode)
When planning and designing the cabinet cooling, take into consideration the power loss of
the Power Output Modules (POM). The power loss of a POM is calculated as follows:
P
vPOM
P
vChannel (x)
x corresponds to the channel number
This power loss results from a 100% activation of the channels. If the channels are not
driven to 100%, which is proportional to the power loss P
You can find the power rating under POM4320 power rating (Page 50).
38
POM4220 Lowend
POM4220 Midrange
phase control
POM4220 Highend
POM4220 Flexible
= P + P
vChannel1 vChannel2
= I(x) • 0.04 W/A
2
Constant power loss
per POM:
1 W
1 W
+ ... + P + 6 W
vChannel9
+ I(x) • 0.8 W/A
2
Channel power loss
Pv = 0.04 W/A • I
2 2
Pv = 0.02 W/A • I
2 2
.
vChannel (x)
SIPLUS HCS4200 PROFINET/PROFIBUS DP
Operating Instructions, 07/2019, A5E35066204A/006
+ 0.8 W/A • I
+ 0.8 W/A • I