Siemens SINUMERIK 840C - Manual (Page 485)

7 Drive Machine Data (SIMODRIVE Drive MD) 09.95
7.2.2 FDD MD (data description - SW 3)
Timer motor temperature alarm 1603
Default value Lower input limit Upper input limit Units
240 0 600 s
Active
at once
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 1601).
ZK undervoltage warning threshold 1604
Default value Lower input limit Upper input limit Units
200 0 600 V
Active
at once
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".
Timer speed controller at fixed stop 1605
Default value Lower input limit Upper input limit Units
200 20 10 000 ms
Active
at once
Input of "Speed controller at fixed stop" timer. The output of the speed controller (current
setpoint value) 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.
Note:
Setting values of MD 1065 < MD 1404 (Timer pulse suppression) are rejected as parameteri-
zation errors.
The monitoring function is independent of internal operating modes (feedforward control,
function generator, etc.).
Status of binary inputs 1700
Default value Lower output limit Upper output limit Units
0000 0000 7FFF Hex
Active
at once
This machine data is used to display the status of the binary inputs.
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SINUMERIK 840C (IA)