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10 Structure of the drive axis
10.3 Drive concept
298
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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10.3.4.3 Decentralised inverters
8400 motec 8400 protec
Illustration
Short description Frequency inverters for motor and wall mounting, V/f
control without encoder, vector control without speed
feedback, optionally with integrated safety functions,
fieldbus communication, pluggable memory chip for
the parameter set, high operational reliability thanks to
a thermally independent system
Frequency inverter for wall mounting, vector control
with and without speed feedback, overload capacity up
to 180 %, optionally with integrated safety functions,
fieldbus communication, pluggable memory chip for
the parameter set, high operational reliability thanks to
a thermally independent system
Voltage range/power range 3 AC 320 … 528 V: 0.37 … 7.5 kW 3 AC 320 … 550 V:
0.75 … 4.0 kW (1st version)
7.5 kW (2nd version)
Approvals CE (UL in preparation) CE (UL in preparation)
Permissible power systems TN, TT, IT TN, TT
Switching frequencies 4, 8, 16 kHz 2, 4, 8, 16 kHz
Mechanical design
Built-in unit
Push-through technique
Cold plate technique
Motor mounting
Wall mounting 
Enclosure IP 55 / IP 66 IP 65
Operation in generator mode
Integrated brake resistor 
External brake transistor
Regenerative
Control types
V/f control 
Vector control (encoderless) 
Servo control
Drive function
Voltage / frequency control 
Torque control
Closed-loop speed control 
PID controller 
Motion Control
Programmability
Parameterisation 
Function block programming
IEC 61131-3
I/O
Analog input / output 0/0 or 1/0 1/0
Digital input / output 2/0 or 5/1 4/2 or 6/0
Relay output
Speed feedback
PTC 
KTY
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