Parker AC30 series, User Manual

Page: 87 / 522

Safe Torque Off
6-9
AC30 series Variable Speed Inverter
STO Technical Specification
INPUTS SPECIFICATION
STO A Input and STO B Input comply with IEC61131-2. Note: inputs do not have hysteresis.
Recommended input voltage for low level:
0V to +5V
Recommended input voltage for high level: +21.6V to +26.4V
Typical input threshold voltage: +10.5V
Indeterminate input range: +5V to +15V. Function is undefined.
Absolute maximum input voltage: -30V to +30V
Typical input current @ 24V 9mA
Fault detection time
4
: 2.3sec typical;
< 1.6sec will not generate a fault
> 3.0sec will generate a fault.
Response time
5
> 2ms
6ms typical
< 10ms
Conditions in which the STO inputs are operative: All, i.e. STO cannot be disabled in any condition
4
A fault is defined in this context as STO A Input and STO B Input being sensed in opposite logic states.
5
Response time is the time from the first STO input becoming active (voltage level is low) until torque production has ceased