Installation / Preparation for commissioning
TR-Electronic GmbH 2018, All Rights Reserved
Printed in the Federal Republic of Germany
Page 46 of 67
TR-ECE-BA-DGB-0141 v03
03/19/2021
4.3 Cable definition
Signal
Line (e.g. TR Art.-No.: 64-200-021)
Data+ / Data
–
min. 0.25 mm
2
, twisted in pairs and shielded
Clock+ / Clock
–
Programming interface
Supply voltage
min. 0.5 mm
2
, twisted in pairs and shielded
The maximum cable length depends on the SSI clock frequency and cable quality and
should be conditioned to the following diagram.
Pay attention that per meter cable with an additional delay-time t
D
(Data+/Data
–) of
approx. 6 ns must be calculated.
SSI clock frequency [kHz]
810
750
570
360
220
120
100
Line length [m]
approx. 12.5 approx. 25
approx. 50
approx. 100 approx. 200 approx. 400 approx. 500
4.4 Connection
– notes
Mainly, the electrical characteristics are defined by the variable connection technique.
Whether the measuring system supports
additional interfaces
external inputs such as the Preset
a reference pulse or inverted signal sequences in case of an incremental
interface
is therefore defined by the device specific pin assignment.
The connection can be made only in connection with the device specific pin
assignment!
At the delivery of the measuring system one device specific pin assignment in printed
form is enclosed and it can be downloaded afterwards from the page
„
www.tr-electronic.com/service/downloads/pin-assignments.html
”. The number of the
pin assignment is noted on the nameplate of the measuring system.
