9
vacon • 71
Safe Torque Off
9.4.1
Technical details
The STO inputs are digital inputs intended for a nominal 24V d.c. input, positive logic (e.g. enabled
when high).
The reaction time of the STO function is the amount of time which passes from the moment in which
the STO is demanded till the system is in the Safe State. For VACON
®
20 X, the reaction time is 20
ms minimum.
Technical information:
Technical values
Absolute maximum voltage range
24V ±20%
Typical input current at 24V
10...15 mA
Logic threshold
according to IEC 61131-2
15V....30V = “1”
0V....5V = “0”
Response time at nominal voltage:
Reaction time
<20ms
Table 33. Electrical data.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
