Siemens SIMOVERT MASTERDRIVES Operating Instructions Manual page 57

Appendix
SML Snubber module low
SMU Snubber module up
SST1/2 Serial interface 1/2
SW Software
TB Technology board (option)
TLG Telegram
TRC Trace
TSY Tacho and synchronization (option)
TTL Transistor-Transistor-Logic
UCE Voltage (V) collector->emitter (desaturation signal of the transistors)
UMR Drive converter
USS Universal serial interface
VC Vector control (control version of SIMOVERT MASTER DRIVES)
VDU Voltage-dividing-unit
VS Precharging contactor
Vsa Line supply voltage components in the a axis
Vsb Line supply voltage components in the b axis
VSB voltage sensing board (line supply voltage sensing board)
WEA Automatic restart function
WR Inverter
X9 Terminal strip on the PEU (types A to D), PSU1 (types E to H) and PSU2 (types J to M)
ZK DC link
10-4
Siemens AG
SIMOVERT MASTER DRIVES
09.97
6SE7087-6BD70
Operating Instructions