Option Kits And Accessories; Option Kits; Safety Stop According To En 954-1 Category 3 (Pending Certification) - WEG CFW-11 Series User Manual

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 According to EN 954-1 Category 3 (Pending Certification)

Inverters with the following codification: CFW11XXXXXXOY.
The inverters with this option are equipped with an additional board (SRB2) that contains 2 safety relays and
an interconnection cable with the power circuit.
Figure 7.1 shows the location of the SRB2 board and the XC25 terminal strip, used for the connection of the
SRB2 board signals.
The coils of these relays are available at the XC25 terminal strip, as presented in the table 7.1.
DANGER!
The activation of the Safety Stop, i.e., disconnection of the 24 Vdc power supply from the safety relay
coils (XC25: 1(+) and 2(-); XC25:3(+) and 4(-)) does not guarantee the electrical safety of the motor
terminals (they are not isolated from the power supply in this condition).
DANGER!
L'activation de l'arrêt de sécurité, càd. la déconnexion de l'alimentation 24 Vdc de la bobine du relais
de sécurité (XC25:1(+) et 2(-); XC25:3(+) et 4(-)) ne garantit pas la sécurité électrique des bornes
du moteur (elles ne sont pas isolées de l'alimentation dans cette condition).
Operation:
1. The Safety Stop function is activated by disconnecting the 24 Vdc voltage from the safety relay coil (XC25:1(+)
and 2(-); XC25:3(+) and 4(-)).
2. Upon activation of the Safety Stop, the PWM pulses at the inverter output will be disabled and the motor
will coast to stop.
The inverter will not start the motor or generate a rotating magnetic field even in the event of an internal
failure (pending certification).
The keypad will display a message informing that the Safety Stop is active.
Option Kits and Accessories
7
7-1