Lenze 4800 Manual page 118

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Signal flow
³
Function
ˆ n
n
act x
Threshold adjustable under C017 from -5000rpm...+ 5000rpm.
Hysteresis fixed 25rpm, default setting: C017 = -3000rpm
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Purpose
For monitoring the act. speed with torque control C005 = -40-...-43-
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Output level = LOW
4900SStr118
n-controller output = M
max
Window fixed 99.9% from n-controller output.
Hysteresis fixed 1.9%. The signal is equivalent to I
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Purpose
4900SStr119
Monitoring of the speed control circuit for limitation (control error)
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Output level = HIGH
RFG = RFG
Inp outp
Window adjustable under C241 from 0...100%
Hysteresis fixed 1% of n
max ,
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Purpose
Signal for detection of acceleration processes in the set-value channel
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4900SStr120
Output level = HIGH
n = 0
act
Threshold adjustable under C019 from 0...5000rpm.
Hysteresis fixed 25rpm, default setting: C019 = 50rpm
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Purpose
Signal for reliable mains switch-off, standstill detection
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4900SStr127
Output level = LOW
n = n
act set
Window adjustable under C240 from 0...100%.
Hysteresis fixed 25rpm, default setting: C240 = 1%
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Purpose
Signal for detection of control deviation in the speed control circuit
4900SStr121
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Output level = HIGH
4900SStr122
Ün Ü ˜ n
act x
Threshold adjustable from 100 to + 5000rpm under C242.
Hysteresis fixed 2% of n
max
Default setting: C242 = 1000rpm
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Purpose
Monitoring of the actual speed for overspeed
4900SStr123
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Output level = HIGH
ÜC046Ü or ÜC049Ü ˜ n
x
Threshold adjustable from 0 to 100% under C243
Hysteresis fixed, default setting: C243 = 1%
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Purpose
Starting protection at digital frequency coupling and analog correction signal
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4900SStr124 Output level = HIGH
Configuration
. LED at the operating unit
max
default setting: C241 = 1%
48XX/49XXSHB0399
7-27