Delta ME300 Series User Manual

Chapter 15 Safe Torque Off Function
ME300
15-9
15-7 Error Code and Troubleshooting Instructions
15-7-1 Error Code Description
Refer to Pr.06-17–Pr.06-22 for the fault record; the relevant STO error code is 72 / 76 / 77 / 78. The
definition is as follows and in Table 4.
06-17
Fault Record 1
06-18
Fault Record 2
06-19
Fault Record 3
06-20
Fault Record 4
06-21
Fault Record 5
06-22
Fault Record 6
Default: 0
Settings 72: S1 internal loop detection error (STL1)
76: STO (STo)
77: S2 internal loop detection error (STL2)
78: S3 internal loop detection error (STL3)
Error code Name Description
72 (STL1)
Channel 1 (S1–DCM)
safety loop error
S1–DCM internal loop detection error
76 (STO) Safe Torque Off Safe Torque Off function active
77 (STL2)
Channel 2 (S2–DCM)
safety loop error
S2–DCM internal loop detection error
78 (STL3) Internal loop error
S1–DCM and S2–DCM internal loop detection
error
Table 15-4
15-7-2 Troubleshooting Instructions
Refer to the following instructions for troubleshooting when STO / STL1 / STL2 / STL3 appears on the
keypad. Refer to Chapter 14 Error Codes.
No.
Digital keypad
Display
Cause Corrective Actions
72
S
TO jumper cap is not installed or
is off.
Install the jumper cap.
External STO card S1 and +24V
short circuit line are not connected.
Check the wiring of the S1 and +24V
terminal.
External STO card is installed
incorrectly or pin fractures.
Check if STO card is correctly installed.
Insufficient external input voltage
Check that the input voltage maintains at
least 11V.
False trigger
Reset the emergency switch (ON: activated)
and cycle the power.
Hardware failure
After you make sure all
the wiring is correct, if
STL1 fault still exists after cycling the power,
please contact Delta.

Delta ME300 Series Specifications

General

Brand	Delta
Model	ME300 Series
Category	DC Drives
Language	English