Specifications

27
WIRING
3.5.3 Safety stop function operation
*1
At an internal safety circuit failure, the operation panel displays one of the faults shown below.
*2
SA is displayed on the operation panel when both of the S1 and S2 signals are in the open status and no internal safety circuit failure
exists.
*3
ON: Transistor used for an open collector output is conducted.
OFF: Transistor used for an open collector output is not conducted.
*4
N/A denotes a condition where circuit fault does not apply.
3.5.4 Internal safety circuit failure
At an internal safety circuit failure, the terminal SO turns OFF.
The following faults can cause the internal safety circuit failure (terminal SO = OFF).
For more details, refer to the Safety stop function instruction manual (BCN-A23228-001).
(Find a PDF copy of this manual in the enclosed CD-ROM.)
Input power
Input signal
Internal safety
circuit failure
*1
Output signal
Inverter operation enable signal
S1-SIC S2-SIC
SO
*3
OFF
— — — OFF Output shutoff (Safe state)
ON
Short Short
No failure ON Drive enabled
Failure OFF Output shutoff (Safe state)
Open Open
No failure
*2
ON Output shutoff (Safe state)
Failure OFF Output shutoff (Safe state)
Short Open
N/A
*4
OFF Output shutoff (Safe state)
Open Short
N/A
*4
OFF Output shutoff (Safe state)
Error Definition
Operation panel
indication
Error Definition
Operation panel
indication
Option fault E.OPT Signal loss detection E.ECT
Communication option fault E.OP1 Excessive position fault E.OD
Parameter storage device fault E.PE Brake sequence fault E.MB1 to E.MB7
Retry count excess E.RET Encoder phase fault E.EP
Parameter storage device fault E.PE2
CPU fault
E.CPU
Operation panel power supply short
circuit/RS-485 terminal power supply
short circuit
E.CTE
E.5
E.6
24 VDC power fault E.P24 E.7
Safety circuit fault E.SAF Internal circuit fault E.13
Overspeed occurrence E.OS
Speed deviation excess detection E.OSD