Auxiliary power supply device and industrial machine

An industrial machine comprising:

• a control device configured to supply electric power to an encoder;
• and
• an auxiliary power supply device configured to supply electric power to the encoder when supply of electric power of the control device is cut off,
• wherein the auxiliary power supply device includes:
• a backup power source configured to supply backup electric power to the encoder when supply of electric power of the control device is cut off;
• an auxiliary power source configured to supply electric power to the encoder when the backup power source is removed;
• a remaining capacity determination unit configured to determine a remaining capacity of the auxiliary power source;
• a display unit configured to display an indication that the remaining capacity is insufficient when the remaining capacity determined by the remaining capacity determination unit is lower than a threshold;
• and
• a switch that is connected to the auxiliary power source and is configured, in an on state, to:
• supply output voltage from the auxiliary power source to the remaining capacity determination unit to actuate the remaining capacity determination unit;
• and
• supply output voltage from the auxiliary power source to the display unit to actuate the display unit.

An industrial machine comprising:

• a control device configured to supply electric power to an encoder;
• and
• an auxiliary power supply device configured to supply electric power to the encoder when supply of electric power of the control device is cut off,
• wherein the auxiliary power supply device includes:
• a backup power source configured to supply backup electric power to the encoder when supply of electric power of the control device is cut off;
• an auxiliary power source configured to supply electric power to the encoder when the backup power source is removed;
• a remaining capacity determination unit configured to determine a remaining capacity of the auxiliary power source;
• a display unit configured to display an indication that the remaining capacity is insufficient when the remaining capacity determined by the remaining capacity determination unit is lower than a threshold;
• and
• a switch configured to actuate the display unit,
• wherein the backup power source is removable only when the display unit is actuated via the switch.