Table of Contents
Advertisement
2
Installation
2.1 Analogue quadrature interface
The RLI20 accepts the nominal 1 Vpp analogue quadrature
from the RLE or HS20. Signal termination is contained within
the RLI20 itself. There is no need for any other termination to be
used.
Cabling
The choice of cables for this application is very important. A
cable with individually screened twisted pairs is recommended.
An example of a suitable cable is the Belden 8164 cable. The
maximum recommended cable length is 10 m.
The signals should be wired as shown in Table 1:
Table 1 – Signal wiring between RLE or HS20 and RLI20
Signal
1st pair
2nd pair
3rd pair
4th pair
Individual screens
Outer screen
!
WARNING: It is essential that the error line inputs
are connected so that the RLI20 can determine if any errors
have occurred in the RLE or HS20 system. If the analogue
quadrature is incorrectly wired, the system may still work but
may move distances and at speeds that are not expected and
may move in the opposite direction to that expected. If a voltage
exceeding ±7 V is applied on any of the signals, damage to the
unit can occur.
!
WARNING: Care should be taken to ensure that
individual signal wires do not short. It is advised that all joints
are sleeved. If input signal wires short, the position output will
be unreliable and the error signal may not work reliably.
Installation
Function
Sine and /Sine
Cosine and /Cosine
Error and /Error
Ref mark and /Ref mark
0 V (both ends)
Case/shell (both ends)
3
Advertisement
Table of Contents
