Everest XCR - Product Manual |
Wiring and Connections
INGENIA | 08/04/2019
40
Specification of STO
Value
Type of inputs
Isolated, ESD protected with input current limit to reduce power
Number of independent channels
2
Maximum absolute continuous voltage
30 V (STOx to STO_RET)
Minimum absolute continuous voltage
-30 V (STOx to STO_RET)
Maximum input LOW level
1.8 V (below this value the STO is ACTIVE, no torque can be
applied to the motor)
Minimum Input HIGH level
2.5 V (above this value the STO input is inactive, torque can be
applied to the motor)
Input current
5 mA typ / 10 mA max
Isolation level
> 4 G
Ω
, 500 V
rms
, 1000 V
DC
ESD capability
IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
IEC 61000-4-4 (EFT) 40 A (5/50 ns)
IEC 61000-4-5 (Surge) IPPM > 8 A
STO activation time (power stage disable)
400 µs ~ 1000 µs
STO deactivation time
1.5 ms ~ 2 ms
STO abnormal fault minimum latching time
1.4 s ~ 2 s
Minimum, non detected STO active pulse
< 400 µs
Can be read from firmware for system diagnostics, see:
Diagnostics
Status of STO1 and STO2 can be read from firmware.
STO report can be read.
Differences between STO1 and STO2 cause abnormal fault.
After 1.4 s a hardware latching condition disables the drive until
power cycling.
STO circuits power supply monitoring.
The truth table of the STO inputs is shown next:
STO firmware notification
A STO stop is notified to the motion controller and creates a
that can be read externally from any
communication interface, however STO operation is totally independent and decoupled from control or
firmware. When the STO is not connected it is virtually impossible to apply torque to the motor.
