Danfoss VLT ISD 511, Руководство по эксплуатации, Страница: 51 / 156

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5.6 Auxiliary Supply Requirements
Supply the Power Supply Module (PSM 510) with a power supply unit with an output of 24/48 V DC ±10%. The output ripple of the
power supply unit must be <250 mV
pp
.
N O T I C E
Only use supply units that conform to the PELV specification.
Use a supply that is CE-marked according to the standards EN 61000-6-2 and EN 61000-6-4 or similar for industrial use.
The secondary circuit must be supplied from an external isolated source.
The power supply unit must be dedicated to the ISD 511 servo system, meaning that the supply is used exclusively for powering the
PSM 510. The maximum cable length between the supply unit and the PSM 510 is 3 m.
5.6.1 Fuses
UL listed fuses are recommended to protect the wiring on 24/48 V DC.
Table 13: Fuses
CE Compliance (IEC 60364) UL Compliance (NEC 2014)
Maximum fuse type Maximum fuse type
50 A
(1)
63 A
(2)
1
If the maximum current is lower, a fuse with lower current rating can be used. Rating of IEC fuses: according to 100% of maximum current. Use a
time delay fuse rated according to the DC voltage used.
2
If the maximum current is lower, a fuse with lower current rating can be used. Rating of UL fuses: according to 125% of maximum current. Use a
time delay fuse rated according to the DC voltage used.
5.7 Safety Supply Requirements
Supply the STO line with a 24 V DC supply with the following properties:
Output range: 24 V DC ±10%
Maximum current: 1 A
Use a 24 V supply unit that is CE marked for industrial use. Ensure that the supply fulfills the PELV specification and is only used for
the system safety input.
A common supply for auxiliary and safety supply can be used, provided the only connection point of the 2 circuits is near to the
supply. This is intended to avoid interference due to a common voltage drop. The maximum cable length between the 24 V supply
unit and the servo system is 3 m.
The safety supply can be looped from PSM 510 to the other system modules except for ACM 510. The cable for this is not provided.
For further information, see
8.6 Installation .
N O T I C E
Ensure there is reinforced isolation between safety signals and other signals, supplies (mains supply), and exposed conduc-
tive parts.
AQ377148425069en-000101 / 130R1213 | 51 Danfoss A/S © 2023.08
Electrical Installation
VLT® Servo Drive System ISD 511
Operating Guide