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1.3 Abbreviations
BDM basic drive module
CCW counterclockwise
CW clockwise
DC diagnostic coverage of safety function
DHCP Dynamic Host Configuration Protocol: communication protocol for assigning the net-
work configuration to clients using a server
HFT hardware fault tolerance
HSPAM high-speed pulse amplitude modulation
HSPWM high-speed pulse width modulation
HW hardware
mF multifuse
MTTFd mean time to failure, dangerous
n.c. not connected
OSSD output signal switching device
P2P point to point (direct connection between two network nodes)
PAM pulse amplitude modulation
PELV protective extra-low voltage
PFH probability of dangerous failure per hour
PoE Power over Ethernet: power supply via Ethernet
PWM pulse width modulation
SELV safety extra-low voltage
SERVO servo control
SFF safe failure fraction
STO safety function: Safe Torque Off
SVC sensorless vector control
UVLO undervoltage-lockout
VCC voltage at the common collector
VECTOR vector control
VF V/f characteristic curve
6 Drive Amplifier SD4B - Hardware Description
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