Loop Cable; Fieldbus Extension Cable - Danfoss VLT ISD 510 Design Manual

Specifications
Each connector type requires specific installation spaces or
area in order to ease the installation and to meet the
minimum allowable bending radius of cable.
NOTICE
Exceeding the minimum allowable bending radius of
cable causes damage on connectors on both the servo
drive and the cable itself.
There are 2 possible types of cable installation. The
minimum allowable bending radius R
lation type is:
•
Permanently flexible: 12 x cable diameter =
187.2 mm
•
Permanently installed: 5 x cable diameter =
78 mm
The maximum number of bending cycles is 5 million at 7.5
x cable diameter (15.6 mm).
Illustration 6.35 shows the servo drive with the straight
connector installed on a size 2 servo drive. Illustration 6.36
shows the servo drive with the angled connector installed
on a size 2 servo drive. The illustrations show the
minimum distance from the servo drive to next object, and
the minimum allowable bending radius R
permanently installed cable.
For cable installation, allow the height of the connector
plus an additional 30 mm for the cable.
Required installation distances
The minimum distance is measured from the electronic
housing as this is the same for all motor variants.
Straight connector
The minimum distance for the straight connector is
calculated as follows:
0.5 x cable diameter + connector height + R
+ 112 mm + 78 mm = 197.8 mm ≈ 200 mm
Rmin
37
Illustration 6.35 Required Installation Distance and Minimum
Bending Radius for M23 Straight Connector
MG36C102
Design Guide
Angled connector
The minimum distance for the angled connector is
calculated as follows:
0.5 x cable diameter + connector length measured from
electronic housing + R
137.8 mm ≈ 140 mm
for each instal-
min

6.3.2 Loop Cable

Shielded/
for
min
unshielded
Shielded
1) Maximum 100 m total length for each line of servo drives.
= 7.8 mm
min
See chapter 5.5.1.2 Loop Cable for ordering numbers.
See chapter 6.1.2.1 Connectors on the Servo Drives for pin
assignment.

6.3.3 Fieldbus Extension Cable

There are 2 types of fieldbus extension cable for ring
redundancy:
See chapter 5.5.2 Fieldbus Cables for ordering numbers.
Danfoss A/S © 08/2017 All rights reserved.
= 7.8 mm + 51.4 mm + 78 mm =
min
140 min
51.4
Rmin
Illustration 6.36 Required Installation Distance and Minimum
Bending Radius for M23 Angled Connector
Maximum Description
cable length
Hybrid cable (overall shield with
25 m 1)
additional fieldbus and safety
section shield).
Table 6.29 Loop Cable
Illustration 6.37 Loop Cable
•
M23 angled connector to M12 straight connector
•
M23 straight connector to M12 straight connector
6 6
75