9300 Servo PLC
System blocks
2.13 Internal motor control (MCTRL_MotorControl)
2-60
9300ServoPLC EN 1.4
2.13.13.5 TMot>SetValue (motor-temperature monitoring OH3 - fixed)
• This function protects the motor from overheating
• The message is triggered by
MCTRL_bMotorTempGreaterSetValue_b
=TRUE.
Function
The signal TMot>SetValue is derived from a comparator with hysteresis. The switch-off threshold is
150°C, and is fixed. The hysteresis is also fixed and amounts to15°C ( i.e. the reclosing point is
135°C.This monitoring is only effective for the thermal sensor specified by Lenze as it is included in
the standard Lenze servo motor. The Sub-D connectors X7 or X8 serve as inputs.
Stop!
Yo u c a n o n ly u se X7 orX8.Theother input must not beassigned (must remainopen).Thismonitoring
is activated by default setting. Thismeansthat themonitoring reacts if no Lenzeservo motor is used.
Features:
• LECOM no.: 53
• Reaction: TRIP or OFF
2.13.13.6 TMot>C0121 (motor-temperature monitoring OH7 - adjustable)
• This function monitors the process.
• The message is triggered by
MCTRL_bMotorTempGreaterC0121_b
=TRUE.
This monitoring is designed as a warning before the final disconnection (TRIP) through
TMot>SetValue.
You can thus influence the process to avoid a switch-off of the motor at an inconvenient time.
Additionally, blowers which would cause an unacceptable noise in continuous operation, can also
be switched on and off.
Function
The signal TMot>C0121 is derived from a comparator with hysteresis.
The same conditions apply here as for the monitoring TMot>SetValue (motor-temperature
monitoring OH3), since the same inputs are used.
The threshold is set under code C0121. The hysteresis is fixed and amounts to 15 K. The signal is
thus reset below a threshold of 15 K.
Features:
• LECOM no.: 2057
• Reaction: WARNING or OFF
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