SMI21
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9.2. Protection
DANGER
PROTECTION
The product has internal protection devices that switch off the
motor power supply when activated. As the motor is no longer
controlled, driving loads can decrease.
• The system manufacturer is responsible for complying with all
the applicable safety rules in the event of product failure.
Failure to comply with these precautions will result in
death or serious injury.
9.2.1. Voltage Protection
The product incorporates protection against voltage surges and undervoltages.
Protection against voltage surges:
The voltage surge threshold can be set in the HMI between 12 and 57 V (set at 57 V by default).
When the supply voltage exceeds the threshold, the product automatically switches to ERROR mode. In
ERROR mode the motor is no longer controlled.
To reset the motor:
-
The supply voltage must be at least 1 V below the threshold value.
-
The motor inputs must be set to STOP mode.
Protection against undervoltages:
When the supply voltage falls below 8 V, the product automatically switches to ERROR mode. In ERROR
mode the motor is no longer controlled.
To reset the motor:
-
The supply voltage must be higher than 9 V.
-
The motor inputs must be set to STOP mode.
9.2.2. Temperature Protection
The product incorporates temperature protection in the form of a temperature sensor on the motor pilot
control card.
Temperature protection:
When the internal temperature exceeds 110°C, the product automatically switches to ERROR mode. In
ERROR mode the motor is no longer controlled.
To reset the motor:
-
The temperature must be less than 90°C.
-
The motor inputs must be set to STOP mode.
9.2.3. Current Limiting
The product incorporates internal current limiting. This limiting directly affects the motor in terms of hardware.
This limiting automatically restricts the current to 17 A in the motor phases.
If this limit is reached, it results in a loss of motor performance.
This product is not designed to operate continuously with this limiting (see the "Electrical Data" section).
