Safe Torque Off
4-40
AC890PX AC Drive
Troubleshooting
Symptom
Examine:
Probable cause
Remedy
6901 MMI display
User
output
4
User inputs
5
Drive won’t start
when given a
start command
*** TRIPPED ***
SAFE TORQUE OFF
On
Both < 15V
STO is invoked.
When safe to do so, connect X11/01 and
X11/03 to 24V ± 10%
*** TRIPPED ***
SAFE TORQUE OFF
Off
Both >15V
and < 30V
Fault latch might
have tripped
Remove all power from drive and re-
apply. If symptom persists, immediately
return the 890 for repair.
See the DANGER box below.
Any other trip
message, e.g.
overvoltage
Off
Both >15V
and < 30V
Drive is tripped,
but not due to
STO.
Reset the trip, and remove its cause. If
symptom persists, return the 890 for
repair.
Any other message
Off
Both >15V
and < 30V
Faulty hardware
Return for repair
Drives starts
unexpectedly
Drives starts
unexpectedly
Don’t care
Don’t care Both < 5V
Faulty hardware
Immediately return the 890 for repair.
See the DANGER box below.
Don’t care
Off
Both > 5V
STO not invoked
by the user.
Use STO according to instructions
elsewhere in this chapter.
Drive fails
comprehensive or
regular STO test
Don’t care
Don’t care Don’t care
Faulty hardware
Immediately return the 890 for repair.
See the DANGER box below.
The above table is only a guide. It may not be a comprehensive list of all possible symptoms relating to STO. Parker Hannifin
Manufacturing will not accept responsibility for any consequences arising from its incompleteness or inaccuracy.
4
Continuity through X11/05 and X11/06
5
Measure X11/01 and X11/03 relative to X11/02 or X11/04
Summary of Contents for AC890PX Series
Page 17: ...2 5 Product Overview AC890PX AC Drive 890PX bottom wire entry ...
Page 144: ...The Keypad 7 9 AC890PX AC Drive The Menu System Map ...
Page 145: ...7 10 The Keypad AC890PX AC Drive The Menu System Map continued ...
Page 328: ...Programming D 88 AC890PX AC Drive Functional Description ...
Page 386: ...Programming D 146 AC890PX AC Drive Setpoint Drive Frequency Frequency 1 Frequency 2 ...