Danfoss VLT ISD 511 Operating Manual page 57

VLT® Servo Drive System ISD 511
Operating Guide
Table 14: Line Choke Characteristics for 1 PSM 510
Model
PSM 510 (10 kW)
PSM 510 (20 kW)
PSM 510 (30 kW)
If 2 PSM 510 modules are installed in parallel, use an AC choke as specified in
to the AC Choke with System Splitting
Table 15: Line Choke Characteristics for 2 PSM 510 installed in parallel
Model
PSM 510 (2 x 30 kW)
Danfoss recommends mounting the AC line choke close to the PSM 510.
The maximum cable length depends on the cross-section, and the required voltage and current at the DC-link.
If the AC line chokes are mounted away from the PSM 510, the maximum cable distance is 5 m.
5.9.2.1.1 Connecting 1 PSM 510 to the AC Choke
Connect the PSM 510 to the electric grid with the correct AC choke for the power size of the PSM 510.
5.9.2.1.2 Connecting 2 PSM 510 Modules to the AC Choke with System Splitting
Ensure the choke used is the correct size based on the combined power of the PSM 510 modules.
When 2 PSM 510 modules are used, the wiring between the AC line choke and each PSM 510 must be the same length within a
tolerance of 0.5 m.
Connect each PSM 510 to the AC choke directly. Parallel wiring is not permitted.
If 2 AC chokes are used (1 per PSM 510) and both PSM 510 modules are mounted at the same side of the system splitting, the setup
is permitted with derating equal to the AC choke's tolerance referred to 60 kW. For example, 10% derating is 54 kW.
If 2 AC chokes are used (1 per PSM 510) where 1 PSM 510 module is mounted before the splitting and 1 after the splitting, the loads
must be balanced equally. Otherwise, the derating of both PSM 510 modules is equal to the AC choke's tolerance. For example,
tolerance 10% + 10% means –20% derating.
If 2 AC chokes are used (1 per PSM 510) and 1 PSM 510 module is mounted before the splitting and 1 after the splitting and half of
the loads are set before the system splitting and half are set after the system splitting, the setup is permitted with derating equal to
the AC choke's tolerance referred to 60 kW. For example, 10% derating is 54 kW.
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Further information on the EXM 510 module and wiring can be found in
Danfoss A/S © 2023.08
Minimum I [A]
rms
20
40
60
for further information.
Minimum I [A]
rms
125
N O T I C E
U [V] Inductance [mH]
rms
500
Minimum: 0.47
Maximum: 1.47
500
Minimum: 0.47
Maximum: 1.47
500 0.47 ±10%
Table 15. See 5.9.2.1.2 Connecting 2 PSM 510 Modules
U [V] Inductance [mH]
rms
500 0.24 ±10%
11.6.13 Expansion Module
AQ377148425069en-000101 / 130R1213 | 57
Electrical Installation
Connector.