Delta ME300 Series User Manual

Chapter 15 Safe Torque Off Function
ME300
15-10
No.
Digital keypad
Display
Cause Corrective Actions
76
The switch action of S1/+24V and
S2/+24V
Check the wiring of the S1 and S2 terminals.
External STO card is installed
incorrectly or pin fractures.
Check if STO card is correctly installed.
False trigger
Reset the emergency switch (ON: activated)
and cycle the power.
Insufficient external input voltage
Check that the input voltage maintains at
least 11V.
Hardware failure
After you make sure all the wiring is correct,
if STO fault still exists after cycling the
power, please contact Delta.
77
STO 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
terminals.
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 STL2 fault still exists after cycling the
power, please contact Delta.
78
STO jumper cap is not installed or
is off.
Install the jumper cap.
Incorrect wiring of STO card Check all the wiring of STO card.
External STO card is installed
incorrectly or pin fractures.
Check if STO card is correctly installed.
False trigger
Reset the emergency switch (ON: activated)
and cycle the power.
Hardware failure
After you make sure all the wiring is correct,
if STL3 fault still exists after cycling the
power, please contact Delta.
Table 15-5

Delta ME300 Series Specifications

General

Brand	Delta
Model	ME300 Series
Category	DC Drives
Language	English