Mitsubishi Electric 800 Series Instruction Manual page 6

Internal
Input safety
power circuit
status
 
OFF
Normal ON
Normal ON
Normal OFF
Normal OFF
ON
Fault ON
Fault ON
Fault OFF
Fault OFF

ON: The transistor is conducted. OFF: The transistor is not conducted.

When not using the safety stop function, short across terminals S1 and PC, and S2 and PC to use the inverter. (In the initial status, terminals S1
and PC, and S2 and PC are respectively shorted with shorting wires.)

If any of the faults shown in the following table occurs, terminal SO, the SAFE signal, and the SAFE2 signal are turned OFF.
Error definition
Option fault
Communication option fault
Parameter storage device fault (control
circuit board)
Retry count excess
Parameter storage device fault (main circuit
board)

When the internal safety circuit is operated normally (no fault occurs), terminal SO, the SAFE signal, and the SAFE2 signal remain ON until
"E.SAF" is displayed. Terminal SO, the SAFE signal, and the SAFE2 signal are turned OFF when "E.SAF" is displayed.

SA is displayed when the terminals S1 and S2 are identified as OFF due to the internal safety circuit failure.

If another fault occurs at the same time as E.SAF, the other fault can be displayed.

If another warning occurs at the same time as SA, the other warning can be displayed.

The ON/OFF state of the output signal is the one for the positive logic. The ON and OFF are reversed for the negative logic.

To assign the functions of the SAFE signal and SAFE2 signal to output terminals, set values shown in the following table in any two parameters
from Pr.190 to Pr.196 (Output terminal function selection).
SAFE
SAFE2
 The use of the SAFE signal and SAFE2 signal has not been certified for compliance with safety standards.
NOTE
• The response time from safety stop signal input to drive shutoff (safe state) is faster than 4 ms.
• Hold the ON or OFF status for 2 ms or longer to input signal to terminal S1 or S2.
Signal input shorter than 2 ms is not recognized.
6
INSTALLATION AND WIRING
Table 4 Truth table of safety related signals
Input terminal Output
, terminal
 
S1 S2 SO

OFF
ON ON

OFF OFF

ON OFF

OFF ON

ON OFF
OFF OFF
ON OFF
OFF OFF
Operation panel
indication
E.OPT
E.OP1
E.PE
E.RET
E.PE2
Output signal
Output signal
, ,
  
SAFE SAFE2
OFF OFF
OFF ON

OFF OFF
 
OFF OFF
 
ON ON
 
OFF OFF
OFF OFF
OFF OFF
OFF OFF
Error definition
Safety circuit fault
Overspeed occurrence
Speed deviation excess detection
Brake sequence fault
CPU fault
Internal circuit fault
Pr.190 to Pr.196 settings
Positive logic
80
81
Inverter Operation panel indication
running
status
E.SAF

Output shutoff
Not displayed
(Safe state)
Drive enabled Not displayed
Output shutoff
Displayed
(Safe state)
Output shutoff
Displayed
(Safe state)
Output shutoff
Not displayed
(Safe state)
Output shutoff
Displayed
(Safe state)
Output shutoff
Displayed
(Safe state)
Output shutoff
Displayed
(Safe state)
Output shutoff
Displayed
(Safe state)
Negative logic
180
181
SA

Not displayed
Not displayed
Displayed
Displayed
Displayed
Not displayed

Displayed
Displayed
Displayed
Operation panel
indication
E.SAF
E.OS
E.OSD
E.MB4 to E.MB7
E.CPU
E.5 to E.7
E.13