Error Code And Troubleshooting Instructions - Delta ME300 Series User Manual

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
Settings
Error code
72 (STL1)
76 (STO)
77 (STL2)
78 (STL3)
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.
Digital keypad
No.
Display
72
72: S1 internal loop detection error (STL1)
76: STO (STo)
77: S2 internal loop detection error (STL2)
78: S3 internal loop detection error (STL3)
Name
Channel 1 (S1–DCM)
safety loop error
Safe Torque Off
Channel 2 (S2–DCM)
safety loop error
Internal loop error
Cause
STO jumper cap is not installed or
is off.
External STO card S1 and +24V
short circuit line are not connected.
External STO card is installed
incorrectly or pin fractures.
Insufficient external input voltage
False trigger
Hardware failure
Chapter 15 Safe Torque Off FunctionME300
S1–DCM internal loop detection error
Safe Torque Off function active
S2–DCM internal loop detection error
S1–DCM and S2–DCM internal loop detection
error
Install the jumper cap.
Check the wiring of the S1 and +24V
terminal.
Check if STO card is correctly installed.
Check that the input voltage maintains at
least 11V.
Reset the emergency switch (ON: activated)
and cycle the power.
After you make sure all the wiring is correct, if
STL1 fault still exists after cycling the power,
please contact Delta.
15-9
Default: 0
Description
Corrective Actions
Table 15-4