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Lock release enable signal
S3
Enabling Grip Switch
A4EG
S8
(2)
(4)
Selector
Switch
(1)
(3)
Open
A1
T11
T12 T21
T22
Y1
G9SX-GS226-T15
(Unit 2)
+24V
Control circuit
A2
S14
S24 S44 S54
KM3
KM4
Timing Chart
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G9SX-BC202(Unit 1)
Emergency
Stop Switch S1
Reset switch S2
Unit 1 S14, S24
KM1, KM2
NO contact
Unit 1
Logical AND output L1
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G9SX-GS226-T15(Unit 2)
Unit 2
Logical AND input T41
(3)
Lock release
S5
switch
Guard Lock
S4
Safety-door Switch
(4)
Enabling Switch S3
(1)
Reset switch S7
(2)
Mode selection input M1
(Selector Switch S8)
Mode selection input M2
(Selector Switch S8)
Unit 2 S14, S24
KM3, KM4
NO contact
(1) Start the unit 2 in normal operating mode.
(2) Switch to maintenance mode by operating the selector switch.
(3) After checking that the motor has stopped, press the lock
release switch to release the guard lock, and open the door to
perform maintenance.
(4) Grip the enabling switch to the middle position.
(5) Press the reset switch to start the unit 2 in maintenance mode.
(6) Release (or grip) the enabling switch to stop the unit 2.
S5
Guard
S6
OPEN
+24V
Open
Open
Y3
M1 M2
T61 T62
T71
T72
Y2
L1
X1
X2
X3
X4
UA
UB
PLC etc.
Indicator
Indicator
(Diagnostic check enabled)
(Diagnostic check enabled)
(8)
(6)
(5)
(7)
(9)
Emergency Stop
Switch
S4
Guard lock
Safety-door Switch
Condition monitoring of
+24V
Safety-door Switch
Feedback loop
KM3
KM4
S7
+24V
Open
AND
Y4
T31 T32 T33
T41 T42
OFF
Manual
Auto
(10)
(7) After closing the guard and switching to operating mode by operating the
selector switch, press the reset switch to restart the unit 2.
(8) After checking that the motor has stopped after a stop signal is input
during operating mode, press the lock release switch and open the guard
to stop the unit 2.
(9) Close the guard and press the reset switch to restart the unit 2.
(10)Operate the emergency stop switch -> All the units stop.
Feedback loop
KM1
KM2
S1
S2
+24V
Open
A1
T11
T12 T21 T22 T31 T32 T33 Y1
G9SX-BC202
(Unit 1)
Control circuit
A2
S14
S24
L1 L2
X1 X2
KM1 KM2
PLC etc.
KM3
S1: Emergency Stop Switch
S2, S7: Reset switches
KM4
S3: Enabling Grip Switch A4EG
S4: Guard lock Safety-door Switch
M2
S5: Lock release switch
S6: Safety Limit Switch
S8: Safety Key Selector Switch
KM1 to KM4: Magnetic contactors
M1 to M2: Motor
Note: The lock release enable signal
must be configured so that it
should turn ON after
dangerous movement is
stopped and safety is ensured
for the door to open.
A4EG
KM1
KM2
M1
9
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