Danfoss VLT ISD 510 Operating Manual page 197

VLT® Servo Drive System ISD 510/DSD 510
Operating Guide
11.4 Motor Overload Protection
-
Internal motor overload protection operates at 105% of the motor full load current.
-
Instruct DSD 510 with nominal motor current (full load current according to the motor technical label) to use the protection
properly.
DSD 510 incorporates internal overload protection in the following multiples of current setting:
Table 127: Multiples of Current Setting
Multiple of current setting
7.2
1.5
1.2
11.5 Motor Overtemperature Protection
The internal motor overload protection implemented does not have thermal memory retention or speed sensitivity.
-
Internal motor overtemperature protection is not incorporated in DSD 510, so motor overtemperature sensing is required.
DSD 510 has an input for motor temperature sensor.
-
A temperature sensor is integrated in ISD 510.
-
Use a motor with reinforced insulation between the thermistor and the motor windings (tested with 4300 V DC and 8000
V impulse).
peak
11.6 Hybrid Cable Protection
The AUX 24/48 V has 3 levels of protection:
• Software (seconds timing range): The control boards opens the 24/48 V AUX if an overload is present (>15 A).
• Hardware (microseconds timing range): Opens automatically if a short circuit of >36 A is present.
• Hardware: A 20 A non-replaceable SMD (surface-mounted device) fuse in case the first 2 protective measures fail.
11.7 Permitted Forces on the ISD 510 Servo Drive Shaft
Illustration 134: Permitted Forces
Danfoss A/S © 2020.08
N O T I C E
Maximum trip time
20 s
8 min
2 hrs
N O T I C E
N O T I C E
20
Fr
Fa
Specifications
AQ262449648484en-000101 / 175R1135 | 197