Operating instructions

2.1.7. DeviceNet Connection

It is essential to terminate the bus line prop-

erly. A mismatch of impedance may result in

reflections on the line that will corrupt data

transmission. The DeviceNet control card is

provided with a plug-cable connector. When a

plug connector is used as a splice between

two trunk lines, the removal of devices will not

sever the network. If required, strain relief

must be provided by the developer. In current

installations of this type of connector, the

strain relief is attached to the product.

NB!

Install wires only when the net-

work is inactive. This will pre-

vent problems such as shorting

the network supply or disrupting

communications.

2.1.8. DeviceNet Termination

Termination resistors should be installed at

each end of the bus line. The resistors must

be mounted between terminal 2 (CAN_L) and

terminal 4 (CAN_H) and should have the fol-

lowing specification:

121 Ohm, 1 % Metal film, 1/4 Watt

2.1.9. Drop Cable

An alternative to splicing two trunk lines in the

connector on the control card is to use a De-

viceNet connection box or a T-connector. For

this kind of installation a drop cable is availa-

ble as an option.

Drop cable order number: 195N3113

The connector is a micro-style, male, with ro-

tating coupling nut, and fits into a Micro De-

vice port.

2.1.10. Network Power Consumption

The DeviceNet option is powered via the internal power supply in the drive. The network voltage

(+24 V) is detected only to determine if the bus is energized or not, thus the current draw from

the network is negligible.

2. How to Install FC 100/ 200/ 300 DeviceNet

MG.33.D3.02 - VLT

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