DOC-0017-03-EN: AC15 Series - Hardware Installation Manual
DOC-0017-03-EN-B 04.04.2023 51 (125)
Motor Thermistor ‘+’ connection
Motor Thermistor ‘-’ connection
Run Forward: 24V digital input
24V input connected i.e., STO DISABLED (drive operational)
24V input connected i.e., STO DISABLED (drive operational)
Minimum STO Implementation:
This example shows ‘STO Request’ contacts that are used to invoke STO on the drive. These contacts are
required to close prior to running the drive:
Motor Thermistor ‘+’ connection
Motor Thermistor ‘-’ connection
Run Forward: 24V digital input
24V input connected via ‘STO Request’ contacts
24V input connected via ‘STO Request’ contacts
To run the drive:
1. Close the ‘STO Request’ contacts.
2. Close the ‘Run Forward’ contact.
To stop the drive:
1. Open the ‘Run Forward’ contact and wait for the motor to come to a standstill.
To invoke STO:
1. When the motor is at standstill, open the ‘STO Request’ contacts.
2. STO will now be ‘Active’ on the drive, for as long as required.
Note: Opening the ‘STO Request’ contacts when the motor is running will result in the motor
coasting to a stop.
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