Mains Switch-Off Logic - Lenze 4800 Manual

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Contactor or relay circuit
FIG 15-12
K1 Controller mains contactor
K2.1 Safety relay for mains isolation if no standstill message is indicated
K4, K5 Relay with gold-plated contacts
S1 Drive off
S2 Drive on
S3 1: Tipping / 2: Automatic
S4 Inching
L10 Direct cable from the control cable 'on'
L11 'Emergency-Off cable
15.9.2

Mains switch-off logic

Stop!
The controllers 48XX/49XX must only be separated from the mains when they are
inhibited or the motor is in standstill.
This also applies to the emergency-off function.
The function |n
The digital output terminal A4 is for automatic mains switch-off. The terminals sets
"low", if the actual speed value is lower than the value set under C019. The
threshold can be set under C019 from 0 to 5000 rpm. For this application, the
setting must not exceed 2% n
Connection of the signal electronics for tipping operation via momentary-contact pushbutton S4
| < C019 can be used for the mains switch-off logic.
act
rated
Selection aid
.
4900Str110
48XX/49XXSHB0399
15-25