Danfoss Vacon OPTEA Operating Manual page 37

VACON® NXP Advanced Safety Options
Operating Guide
Illustration 12: Open Loop Control without an Encoder Board in Slot C
Because of EMC reasons, the last component that handles the encoder signals should have a termination resistor when Sin/Cos or
TTL type encoders are used. The termination resistor enhances the quality of the signals. If there are no components on the encoder
signal chain after the Advanced safety option board, the termination must be on the Advanced safety option board.
If the Advanced safety option board transmits the encoder signals to the encoder board in slot C, use termination on the encoder
board and not on the Advanced safety option board. This applies to the cases in
other possible components that handle the encoder signals.
Do not use multiple termination resistors. Configure the termination resistor during the parameterization of the Advanced safety
option board.
Encoder
TTL: A+, B+, Z+
Sin/Cos: Sin+, Cos+, Ref+
TTL: A-, B-, Z-
Sin/Cos: Sin-, Cos-, Ref-
Illustration 13: Using Termination Resistors, Resistor 1 or Resistor 2
The use of resistor on the Advanced safety option board is selected during parameterization.
Danfoss A/S © 2021.06
SLOT C
No
Encoder
Board
Encoder
SinCos / Digital pulse signals
Control Board
SLOT D
Advanced
safety
option
board
Illustration 10
Subsequent logic
1
Advanced safety option board
2
150 Ω
Overview of the System
Drive
and Illustration 11. It also applies to
AQ319736045637en-000101 / DPD01798 | 37