WEG CFW700 User Manual - page 63
58 | CFW700
Option Kits and Accessories
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7.1.7 24 Vdc External Control Power Supply - CFW700...W1...
The use of this option kit is recommended with communication networks (Profibus, DeviceNet,
etc.), since the control circuit and the network communication interface are kept active (with
power supply and responding to the network communication commands) even in the event of
main power supply interruption.
Inverters with this option have a built-in DC/DC converter with a 24 Vdc input that provides
adequate outputs for the control circuit. Therefore, the control circuit power supply will be
redundant, i.e., it can be provided either by a 24 Vdc external power supply (connection as
shown in
a) or b)) or by the standard internal switched mode power
supply of the inverter.
Observe that the inverters with the external 24 Vdc power supply option use terminals XC1:34
and 36 or XC1:15 and 16 as the input for the external power supply and no longer as the output
like in the standard inverter (
).
In case of interruption of the external 24 Vdc power supply, the digital inputs/outputs and analog
outputs will no longer be fed, even if the mains power is on. Therefore, it is recommended to keep
the 24 Vdc power supply always connected to the terminals XC1:34 and 36 or XC1:15 and 16.
24 Vcc
± 10 %
@ 1.5 A
24 Vcc
± 10 %
@ 1.5 A
a) Connection terminals for
XC1:34 and 36
b) Connection terminals for
XC1:15 and 16
Figure 7.1: External 24 Vdc power supply capacity and connection terminals
7.2 ACCESSORIES
The accessories are installed to the inverter easily and quickly using the “Plug and Play” concept.
When an accessory is connected to the slots, the control circuit automatically identifies the
model of this accessory and its code is presented in the parameter P0028. The accessory shall
be installed with the inverter power supply off.
The code and model of each available accessory is presented in the
The accessories can be ordered individually and they will be provided in their own packaging
containing the components and guides with detailed instructions for installation, operation and
programming.