Part Change Notification

This page describes the relevant product specifications changes between the different manufactured revisions.

Product revisions

Revision	Date	Notes
D	30 Dec 2022	Initial version
E	01 Aug 2023	Brake capability removed. Removed 3.3 Feedback voltage
F	28 Nov 2023	STO specification update STO cannot be bypassed through the 5V output of the drive

Safety Function Specification

STO cannot be bypassed through the 5V output of the drive

The next table highlights the specifications that change between the different product revisions:

Safety Function Specification	Value older revisions < F (without certification)	Value new revisions > F (to be certified)
Safety relevant parameters according to IEC 61508:2010	-	Safety integrity level: SIL3
Safety relevant parameters according to IEC 61508:2010	PFH: ≤ 1.53 x 10^-91/h	PFH: ≤ 1.12 x 10^-91/h
Safety relevant parameters according to EN ISO 13849-1:2015	-	Performance level: Ple
	-	Category: 3
Fault Reaction Time	≤ 33 ms System maximum Reaction Time in case of a Detected Fault or safety function activation.	≤ 13.5 ms System maximum Reaction Time in case of a Detected Fault or safety function activation.

Integration Requirements

The next table highlights the integration specifications that change between the different product revisions:

Integration Requirement	Parameter	Value older revisions < F (without certification)	Value new revisions > F (to be certified)
STO Inputs Interface electrical characteristics	Input pins (naming)	STO1, STO2 and STO_RET	\STO_A, \STO_B and STO_RET
	Maximum input LOW level (VIL)	1.1 V or open (below this value the STO is ACTIVE, no torque can be applied to the motor)	5 V (below this value the \STO is ACTIVE).
	Minimum Input HIGH level (VIH)	3.6 V (above this value the STO input is inactive, torque can be applied to the motor)	15 V (above this value the \STO is INACTIVE).
	Maximum absolute ratings	24 V SELV (maximum OVP 26.4V (110%); maximum failure voltage 60 V)	V_{max_nom} (maximum nominal voltage)= 32 V SELV V_{max_fault} (maximum voltage in the event of an external failure) = 60 V
	Input current	5 mA typ / 10 mA max	≤ 8 mA @ 32 V input ≤ 15 mA in case of internal failure.
STO interface Timing Characteristics	STO activation time (Safety function Reaction Time	t < 10.7 ms	t_SF ≤ 13.5 ms The Safety Function Reaction time is measured as the time since one of the STO inputs (\STO_A or \STO_B) goes below VIL and the STO function actuates (power transistors deactivated).
	STO deactivation time	t < 2 ms	t_{STO_DEACT}≤ 10.5 ms The STO Deactivation time is measured as the time needed for deactivating the HW STO from a VIL= 5 V when activated with with VIH ≥ 15 V.
	Max. activation pulse filtering (OSSD)	t_pulse ≤ 400 µs	t_pulse ≤ 1 ms
	Abnormal STO diagnostic time	≤ 6.8 ms (Activation STO)	t_ABN≤ 13.5 ms Minimum STO signals discrepancy time that causes an Abnormal Fault and activates the Safety Function.
	Max. abnormal STO latching time	t_{ABN_LATCH_MAX} ≤ 3.4 s Minimum STO signals discrepancy time that guarantees a latching Abnormal STO Fault.	t_{ABN_LATCH_MAX} ≤ 2.5 s Minimum STO signals discrepancy time that guarantees a latching Abnormal STO Fault.
	Min. abnormal STO latching time	t_{ABN_LATCH_MIN} ≥ 1.4 s Maximum STO signals discrepancy time that guarantees that Abnormal STO Fault is not latched.	t_{ABN_LATCH_MIN} ≥ 0.6 s Maximum STO signals discrepancy time that guarantees that Abnormal STO Fault is not latched.