Table 155: Pin Assignment of External Encoder Connectors (X1/X2)
Pins
Description
Notes
SSI/BiSS
Notes
1
24 V
24 V DC ±10% (used for powering the encoder)
Maximum current: 150 mA
2
–
–
–
3
–
–
–
4
RS422 RXD
Positive data
Bus speed:
SSI: Up to 10 Mhz clock frequency with 30 m cable.
BiSS: Fulfills the RS485 specification.
5
RS422 TXD
Positive data
6
GX
Isolated ground.
If encoders are powered externally, the ground of the
external supply must be connected to GX.
–
7
–
–
–
8
/RS422 RXD
Negative data
Bus speed:
SSI: 0.5 Mbit with 25 m cable.
BiSS: Fulfills the RS485 specification.
9
/RS422 TXD
Negative data
NOTICE
-
Only PELV potential can be connected to the external encoder.
11.7.15 Expansion Module Connector
e3
0b
h3
90
.1
0
DC+
DC-
GND
24 V
48 V
Illustration 154: Expansion Module Connector
Specifications
Operating Guide | VLT® Multiaxis Servo Drive MSD 510 System
AQ262450196490en-000101 / 175R1170
236 | Danfoss A/S © 2019.10
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