STO FUNCTION
APPLICATION MANUAL
SINUS PENTA
PENTA MARINE
IRIS BLUE
17/
27
The DT01 proof-test needs to be performed in 4 steps:
Step nr1 Drive is working with motor torque applied to motor.
This condition is obtained by energizing both STO input signals (ENABLE-A and ENABLE-B)
and transmission of PWM commands from Microcontroller to the IGBT Drivers.
WARNING:
Speed and torque applied during this step need to be compliant with acceptable working
conditions of the application where the drive is installed.
Step nr1
partial
result
No Test Result required: this condition is based on FW code and for this Diagnostic Test we
need to use only HW components.
Step nr2 Activation of STO function, so no motor torque is applied to the motor.
This condition is obtained by de-energization of one STO input signal (ENABLE-A).
Step nr2
partial
result
Test Result PASS: Diagnostic LED
s “System OK” L8 and L9 are LIGHT ON.
Both the Diagnostic LED
s “System OK” L8 and L9 are LIGHT ON only if all the internal and
intermediate PWM signals are retained at the proper logic level corresponding to STO activation.
Test Result FAIL: Diagnostic LED
s “System OK” L8 and/or L9 are LIGHT OFF.
If at least one of the internal and intermediate PWM signals are not at the proper logic level or at
least one of the related components are NOT correctly working, one or both the Diagnostic LEDs
“System OK” L8 and L9 are LIGHT OFF.
Step nr3 Drive is working again with motor torque applied to motor.
This condition is obtained by energizing again the STO input signal opened during Step nr2
(ENABLE-A) and transmission of PWM commands from Microcontroller to the IGBT Drivers.
WARNING:
Speed and torque applied during this step need to be compliant with acceptable working
conditions of the application in which the drive is installed.
Step nr3
partial
result
No Test Result required: this condition is based on FW code and for this Diagnostic Test we
need to use only HW components. Same as Step nr1.
Step nr4 Activation of STO function, so no motor torque is applied to motor.
This condition is obtained by de-energizing the other STO input signal (ENABLE-B).
Step nr4
partial
result
Test Result PASS: Diagnostic LED
s “System OK” L8 and L9 are LIGHT ON.
Same as Step nr2.
Test Result FAIL: Diagnostic LED
s “System OK” L8 and/or L9 are LIGHT OFF.
Same as Step nr2.
For all steps we need to have Test Result PASS.
Measure to adopt in case of Test Result FAIL:
Board ES927 board is damaged
It is mandatory to replace the drive or the board with a new one.
