8 System Setup
8.23Safety Logic Circuit
8-237
182582-1CD
182582-1CD
MH900, DX200 Controller
4. Timer
ᇲ : Already supported in the standard function ●: Additional instruction
8.23.4.5 Output Signal
The following is the explanation of the output signals expanded in the
safety logic circuit function.
No. Display Contents
Standard
Expansion
Function
Note
Safety
Field
Bus
Disabled
Safety
Field
Bus
Enabled
1
TMR[8] One shot pulse width timer 8 timer -
●●
2 TM[4] OFF DELAY OFF Delay timer 4 timer
ᇲᇲᇲ
3 TM[4] ON DELAY ON Delay timer 4 timer
ᇲᇲᇲ
WARNING
If there is an error in the safety I/O signal connection, the safety
function is damaged and a serious accident may happen. When setting
or changing the safety I/O signal connection, be sure to confirm it
operates correctly.
Expanded signal
name
Hard-wired
signal name
Explanation
S-EXDSW EXDSW ࣭This is the external enable switch signal and functions only in the
teach mode.
࣭When both the S-EXDSW signal and the enable switch on the
programming pendant are ON, the servo power can be turned ON.
࣭When the S-EXDSW signal is not used in the safety logic circuit, the
machine safety board regards this as the short-circuit status.
࣭The machine safety board monitors the hard-wired EXDSW signal at
all times only in the teach mode. When one of the EXDSW signal, the
S-EXDSW signal and the enable switch on the programming pendant
is OFF, the servo power supply is turned OFF.
࣭The control status signal #80036 is turned ON/OFF.
S-EXESP EXESP ࣭This is the external emergency stop input signal.
࣭When the S-EXDSW signal is turned OFF, the signal performs the
similar control to the EXESP signal when it is turned OFF.
࣭When the S-EXESP signal is not used in the safety logic circuit, the
machine safety board regards this as the short-circuit status.
࣭The hard-wired EXESP signal is always monitored. When either the
EXESP signal or the S-EXESP signal is OFF, the servo power supply
is turned OFF.
࣭The control status signal #80025 is turned ON/OFF.
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