Siemens SINUMERIK 840C Installation Instructions Manual page 551

7 Drive Machine Data (SIMODRIVE Drive MD)
7.3.2 Drive MD (data description)
1603
Default value
240
Input of timer for the motor temperature alarm. When the value set in "Motor temperature
warning" (MD 1602) is exceeded, a message is transferred to the SERVO and a time monitor
activated. If the timer runs out before the temperature drops below the limit, the drive initiates
a generator braking operation and suppresses the transistor drive signals for the appropriate
axis after MD 1404 (pulse suppression) in conjunction with MD 1403 (creep speed).
Note:
Changing the timer setting will not influence a time monitoring function already in progress
(counter started). The change will become applicable when the motor temperature has
dropped below the warning limit (MD 1602).
1604
Default value
200
Input of DC-link undervoltage warning threshold. When the voltage drops below this value, a
message is sent to the SERVO. This message is output on the 1st page of the FDD service
display: DC link "off".
1605
Default value
200.0
Input of "Speed controller at fixed stop" timer. The status of the current at the current setpoint
limit is monitored. In the event of a fault, the control pulses for the power section transistors
are suppressed on the drive side when the timer setting has expired.
Caution:
When MD 1605 is set to a value lower than the setting in MD 1404 (timer pulse suppression),
the generator-mode braking operation may be aborted with error message "Speed controller at
fixed stop"; the drive then coasts to a standstill.
1606
Default value
8 000.0/30.0
Input of speed threshold for "Speed controller at fixed stop" alarm (see MD 1605 for details).
The default setting depends on the motor type (FDD ˆ =8000, MSD ˆ =30) and is parameterized
by the drive configuration during start-up.
7–136
More user manuals on
Timer motor temperature alarm
Lower input limit
0
DC link undervoltage warning threshold
Lower input limit
0
Timer n controller at fixed stop
Lower input limit
20.0
Threshold n controller at fixed stop
Lower input limit
0.0
ManualsBase.com
Upper input limit
600
Upper input limit
600
680 (as from SW 6)
Upper input limit
10 000.0
Upper input limit
50 000.0
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Siemens AG 1992 All Rights Reserved
07.97
Active
at once
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s
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at once
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V
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at once
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at once
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rev/min
6FC5197- AA50
SINUMERIK 840C (IA)