WEG CFW-11 User Manual - page 103
Option Kits and Accessories
7
CFW-11 | 7-1
7 OPTION KITS AND ACCESSORIES
This chapter presents:
The option kits that can be integrated to the inverter from the
factory:
- Safety Stop according to EN 954-1 category 3.
- External 24 Vdc power supply for control and keypad.
Instructions for the proper use of the option kits.
The accessories that can be integrated to the inverters.
Instructions for the installation, operation, and programming of the accessories are described in their own
manuals and are not present in this chapter.
7.1 OPTION KITS
7.1.1 Safety Stop Function
Inverters with the following codification CFW11...O...Y.... Refer to
Section 3.3 SAFETY STOP FUNCTION on
page 3-38
.
7.1.2 24 Vdc External Control Power Supply
Inverters with code CFW11XXXXXXOW.
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
Figure 7.1 on page 7-2
) 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 XC1:11 and 13 as the
input for the external power supply and no longer as the output like in the standard inverter. (
Figure 7.1 on
page 7-2
).
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 XC1:11 and 13.
The keypad displays warnings indicating the inverter status: whether the 24 Vdc power source is connected,
whether the mains power source is connected, etc.