Lenze E94P PositionServo Modbus User Manual download pdf (Page 13)

13 P94MOD01C

Installation

3.3.5 Connections and Shielding: Ethernet

The use of pre-fabricated cables is recommended as this reduces the chances of connections mistakes and

poor quality connections.

If cable connections are assembled on site then it is strongly recommended that these cables are tested with

a suitable Ethernet cable tester

STP cables are the preferred solution as they provide a screen/shield surrounding the inner cores and have an

integrated screened surround on the RJ45 connector for quick and easy connection.

Figure 5: CAT5e STP Cable

3.3.6 Network Termination: EIA-485

In high speed (EIA-485) networks (typically 19.2kbps or higher) it is essential to install the speciﬁed termination

resistors, i.e. one at both ends of a network segment. Failure to do so will result in signals being reﬂected back

along the cable which will cause data corruption. A 120W 1% ¼W resistor should be ﬁtted to both ends of a

network segment across the TxA and TxB lines.

120

Ω

¼ W

onnect to

cubical panel/

ear

th (PE) as

close to driv

as possible

Figure 6: EIA-485 (RS485) Network Termination

3.3.7 Network Termination: Ethernet

Ethernet network cable termination is not required as it is integrated into the circuitry of each device’s RJ45

port.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 37 38

No comments

Lenze E94P PositionServo Modbus User Manual Page 13