General Information - WEG CFW-11 Guía De Instalación, Configuración Y Operación

1 GENERAL INFORMATION

NOTE!
These are the original instructions.
Inverters with safety stop option have suffix Y (CFW-11 and CFW-11M inverters) or suffix Y1
(CFW70x inverters) on its nomenclature. Control units of CFW-11M with safety stop option
also have suffix Y on its name (e.g.: UC11-1340T5OYZ).
The STO (Safe Torque Off) safety function, according to EN 61800-5-2, is integrated into those
inverters; other safety functions, like SS1, can be implemented with the aid of external devices
(see Chapter 4 EXAMPLES OF WIRING DIAGRAMS OF INVERTER CONTROL SIGNAL on
page 14).
Those inverters have an additional board (SRBXX) with two safety relays (K1 and K2) that
actuate directly on the power circuit of the inverter (more specifically on the IGBT gate drivers
power supply, for further information see
remain switched off while safety stop function is activated, even in case of an internal single
failure. The position of SRBXX board and XC25 terminals (safety stop terminals) on the inverter
is shown in Figure 2 on page
Figure 1 on page
9.
Safety Stop Function
6) and guarantee that the IGBTs
CFW-11, CFW-11M, CFW70X | 5