Siemens 6SE7024-1EP85-0AA1 - Page 51

05.2005 Description
Siemens AG 6SE7087-2NP85-0AA0
SIMOVERT MASTERDRIVES Operating Instructions 2-3
DC link
connection
C'
D'
C / L+
D / L-
PE3
U1/L1
V1/L2
W1/L3
PE
Pre-chargingRectifier
Pre-charging
of capacitor
module
G
H
Brake chopper
Braking
resistor
Mains
connection
Fig. 2-1 Circuit principle of the 15 kW rectifier unit
G
H
C / L+
D / L−
DC link
connection
Braking
resistor
U1 / L1
V1 / L2
W1 / L3
Mains
connection
PE PE
Brake
chopper
Controlled
rectifier
Fig. 2-2 Circuit principle of the 50 kW/100 kW rectifier units