Stahl SLE22 - Temperature Control for Hoist and Travel Motors

3 General description, function
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BA_SLE22_EN.DOCX
3.7.2 Mechanical operating hours counter
The device counts the total operating hours.
They are shown on the operating hours
counter mounted on the front.
• If motor management for frequency inverter operation is selected, the operating
hours counter starts to count as soon as the hoist motor is activated.
• If motor management for a pole-changing motor is selected, the operating hours
counter starts to count as soon as the hoist motor is activated.
3.7.3 Temperature control for hoist and travel motors
DANGER
ϑ
ϑϑ
ϑ1
The hoist motor temperature is constantly monitored. If the motor ptc thermistor (input
ϑ
ϑϑ
ϑ1) is activated a message is given via the device LEDs and all hoist motions (outputs
K↓, K↓↓ and K↑ , K↑↑) are disabled..
The load cannot be moved until the hoist motor has cooled off.
NOTICE
The ptc thermistor input ϑ
ϑϑ
ϑ1 is monitored for short-circuiting. If the resistance measured
at the ptc thermistor input drops to <80 Ohm, a ptc thermistor error is displayed for ϑ
ϑϑ
ϑ1
and the hoist motions disabled as for overtemperature (see chapter 9.2.1).
WARNING
ϑ
ϑϑ
ϑ2
The travel motor PTC thermistor(s) are connected to temperature input ϑ
ϑϑ
ϑ2. If the
PTC
thermistor reaches cut-off temperature, the SLE22 detects the status
overtemperature2
and disconnects left/right. The travel motors can no longer be activated.
After the motor has cooled down the error is automatically acknowledged by the SLE22.
NOTICE
•
All PTC thermistors must meet the requirements of DIN 44080.
• All PTC thermistors can be replaced by resistances with ~300 Ohm if the motors
used have no PTC thermistors.
CAUTION: The hoist or cross travel motors are then no longer protected against
overtemperature.
• Note technical data!
The ptc thermistor inputs are monitored for short-circuiting. If the resistance
measured at the input drops to <80 Ohm, a ptc thermistor error is displayed.
If no temperature sensor is connected to ϑ
ϑϑ
ϑ2 the warning signal can be disabled by
switching sliding switch S3_2.
left/right is switched independently of this.