Delta ASDA-A3 Series User Manual page 106

ASDA-A3
AL500: see the following diagram. When the motor runs normally, but both STO_A and STO_B
signals are low for 10 ms at the same time, the firmware disables the drive (Servo Off) and
triggers AL500.
AL501 / AL502: see the following diagram. When the motor runs normally, but one of the safety
signal source is low for 1 s, the firmware disables the drive (Servo Off) and triggers AL501 or
AL502. The following diagram illustrates AL501.
Note:
When the STO_A signal is low, AL501 occurs; when the STO_B signal is low, AL502 occurs.
1.
Contact the distributor if AL503 occurs.
2.
Refer to Section 3.10.4 for the FDBK signal.
3.
STO_A
H
STO_B
H
Firmware
detection of
STO not active
the STO
function
Open
FDBK
SRDY
ON
Alarm
No alarm
STO_A
H
H
STO_B
L
Firmware
detection of
STO not active
the STO
function
Open
FDBK
SRDY
ON
Alarm
No alarm
L
L
10 ms
STO active
Max. 20 ms
Close
OFF
AL500
L
1s
STO active
Max. 20 ms
Open
OFF
AL501
Wiring
3
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