SMAC CBC-EIP User Manual

13
The following table shows a summary of the STO performance.
Mode
Status
STO1
input
STO2
input
Power
stage
state
STO_FB
Drive function
Normal
operation
STO
ACTIVE
(No torque to
the motor)
0
0
Disabled
0
Drive cannot start or
provide power to the
motor. STO trip reported
to the DSP and to STO_FB.
This is intended safe
torque off with dual
channel operation.
STO
INACTIVE
(Ready to
run)
1
1
Enabled
1
Drive is enabled to run
under firmware control.
The drive can supply
power to the motor.
Diagnostic
STO ACTIVE
PULSE (1 ms <
t < 23 ms)
x
0
Enabled
0
A short STO ACTIVE ("0")
pulse does not stop the
motor operation.
However, it activates the
STO FEEDBACK. It can be
used for performing
system diagnosis and
increasing system
reliability.
STO ACTIVE
PULSE (1 ms <
t < 23 ms)
0
x
Enabled
0
Abnormal
operation
Abnormal STO
ACTIVE
0
1
Disabled
0
Drive cannot start or
provide power to the
motor. STO trip reported
to MCU. If this persists for
> 2.3 s the STO will lock in
FAULT state. To reset this
fault a power cycle is
needed.
Abnormal STO
ACTIVE
1
0
Disabled
0
STO FAULT
x
x
Disabled
(latched)
AND
(STO1,
STO2)
After > 2.3 s of abnormal
STO active the driver will
stay latched in this state
untill power cycle.

SMAC CBC-EIP Specifications

General

Brand	SMAC
Model	CBC-EIP
Category	Controller
Language	English