4
Hardware installation
The installation of HIPERFACE DSL
®
in a drive system requires an interface circuit with
specific components as well as the installation of a digital logic core for an FPGA com‐
ponent.
The interface circuit is described thoroughly in this chapter. The chapter also contains
recommendations for the selection of components.
The digital logic core (IP Core) is supplied by SICK for prescribed FPGA types.
In addition, the type of cable recommended for the connection between the frequency
inverter and the motor feedback system is described thoroughly in this chapter.
NOTE
It may also be possible to use other sorts of cable. These must be tested before use,
however.
As a physical layer, HIPERFACE DSL
®
uses a transfer in accordance with EIA-485
(RS-485).
4.1
Interface circuit
In most cases a transceiver for more than 20 MBaud is suitable. Nevertheless the tim‐
ing parameters of the transceiver have to fulfill the requirements of the following
under worst case conditions of the application.
Table 3: Interface circuit
Characteristic
Value
Units
Transfer rate
>20
MBaud
Permitted common mode voltage
-7 to +12
V
Receiver: Differential threshold voltage
< 200
mV
Load resistance
< 55
Ohm
Receiver running time delay
< 60
ns
Sender running time delay
< 60
ns
Sender power-up delay
< 80
ns
Sender power-down delay
< 80
ns
Sender rise time
< 10
ns
Sender dropout time
< 10
ns
Switch over time of 1 bit
< 106.7
ns
Protection against short-circuit
Protection against bus conflict
HIPERFACE DSL
®
can be used in connection with two different interface circuit configu‐
rations. Each configuration requires a different sort of connection cable (see
).
4.1.1
Separate encoder cable - four core cable
When using a separate encoder cable, the smallest interface circuit can be used. The
separate encoder cable allows a four core connection.
In connection with the associated table,
below gives the specification of the
interface circuit.
HARDWARE INSTALLATION
4
8017595/ZTW6/2018-01-15 | SICK
T E C H N I C A L I N F O R M A T I O N | HIPERFACE DSL
®
15
Subject to change without notice