Lenze E84DGFCA Series, Руководство по связи

Страница: 24 / 75

Installation
Electrical installation
24
Lenze · Decentralised frequency inverter 8400 motec (AS-Interface option) · EDS84DMOTASI EN 5.0 - 02/2019
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.2.3 Voltage supply
• The Communication Unit is supplied with voltage via the AS-i bus cable.
• Access to parameters of a device that is disconnected from the mains is not possible.
• Permissible voltage (DC) / max. current:
• U = 29.5 ... 31.6 V (according to AS-i specification)
• I
max
= 120 mA
Low-voltage supply via the AS-i-bus cable
In case of low-voltage supply via the AS-i bus cable, communication with the slaves is still possible
if no mains voltage is available.
• A previous mains connection (400 V) is not required.
• If the mains voltage is not connected, the digital inputs DI1 ... DI4 can be evaluated via slave 2
(FW3.0) or slave 1 and slave 2 (FW2.0).
• The AS-i input ports DI0 ... DI3 represent the digital inputs DI1 ... DI4 (see AS-i concept of the
Communication Unit
(

34)
). The current status of these inputs can be called.
• All digital input and output data that can be selected by the inverter have been deleted or are
invalid.
• External sensors are also supplied via the AS-i bus cable.

Note!
An incorrect switch-on sequence of the voltage supply causes an error in the inverter.
• First switch on the supply voltage for AS-i, then switch on the mains voltage for the
inverter.

"Inverter Drives 8400 motec" hardware manual
Here you can find detailed information on how to wire the Communication Unit.