Accelnet Plus Micro Modules User Guide
16-01687 Rev 03
Copley Controls
Page 111 of 139
Maintenance
Ease of Accessibility and Replacement of Internal Parts
There are no user-replaceable parts in the AEV & APV.
The warranty will be void if the user attempts any repairs.
For safety and to assure compliance with documented system data, only Copley Controls
shall perform repairs to the AEV & APV.
Periodic STO Testing Interval
To meet SIL 3 and/or Cat. 3 PL e performance of the Safety Function, periodic diagnostic
testing is required to be performed every 3 months, per IEC 61800-5-2. The AEV and APV
drives have internal diagnostics testing software to verify the function of the STO circuits
every 24 hours. If a fault is detected, the AEV/APV drive shall be put into a Safe State until
the fault is cleared. This internal diagnostics testing software of the AEV/APV products fulfills
this requirement without intervention of the operator.
Disabling & Suspension of Safety Functions: STO Disabling
Disabling (bypassing) means de-activating the STO function. A convenient method for
disabling the STO function is shown here for those installations that do not use the STO
function.
An internal power source in the drive is brought out to the Safety connector. Connecting the
STO inputs between this bypass power source and ground supplies power to the STO opto-
couplers, energizing them, and enabling the PWM outputs to be controlled by the drive. The
figure below shows the connections to either mute the STO function permanently, or to bring
it out to a connector so that the user can wire it into their system.
STO Disabling Connections: AEV & APV
These figures show the disabling connections for two configurations. The figure on the left
brings the disabling connections out to the user on the their mounting board to give them
access to the STO feature. The figure on the right shows the disabling connections made
permanently on the user board for applications that do not use the STO function.
USE PC OA D
Channel 1
STO IN2
STO IN1
Channel 2
2k
10k
2k
10k
STO IN1
STO IN2
AEV APV
3
AEV APV
2
3
1
2
5 , 60 SGND
57, 5 5V
unctional Safety Circuit oundary
USE PC OA D
Channel 1
STO IN2
STO IN1
Channel 2
2k
10k
2k
10k
STO IN1
STO IN2
AEV APV
3
AEV APV
2
3
1
2
5 , 60 SGND
57, 5 5V
unctional Safety Circuit oundary