APPLICATION EXAMPLE
Door protection using key operated interlock switch (GKR/GKL Series) and standstill monitor module (FF-SR05936)
L1
L2
L3
Fuse
Honeywell
GKR/GKL
Solenoid Key
Fuses
Sw2-21 Sw2-13 Sw1-21 Sw1-13 Term4
Operated Safety
Interlock Switch
Key
Sol.
K4
K5
Sw2-22 Sw2-14 Sw1-22 Sw1-14 Term5
Door
Opening
Start Motor
push-button
Emergency
Stop
K5
K4
Unlock
Door
M
3 Ph.
Stop Motor
push-button
A1
11
21
33 43
Z1
Z2
A1
S
S
S
(+)
(+)
11
12
22 13 23 33
41
Honeywell
FF-SR05936
Honeywell
FF-SRS5935
Power
Power
S1
Zero
Motion
Con-
tinuity
Z1/Z2
K4
K5
K2
K3
S2*
Internal
switches
A2
(-)
A2
(-)
S
S
S21
PE 14 24 34 42
12
22
34 44
33
34
K4
K5
N (-)
FUNCTIONAL DESCRIPTION
Stop Sequence
Start Sequence
Initially, the motor is operating and the door is closed and locked.
Initially, the motor is not operating and the door is open. To initiate the
start sequence, close the door. This action will close the two normally
closed contacts of the key operated interlock switch. It will also
automatically restart the emergency stop modules. As the Unlock
push-button is open, the solenoid coil of the key operated interlock
switch is de-energized and the door is locked.
To initiate the stop sequence, press the Stop push-button. This
action will de-energize the external safety relays K4 and K5 and im-
mediately stop the motor.
To unlock the door when the motor has reached zero motion, press
the Unlock push-button. This action will energize the coil of the
solenoid of the key operated interlock switch and unlock the door.
The door may now be opened safely. No hazardous motor motion
is present.
The motor may now be started.
To start the motor, press the Start push-button. This action will ener-
gize the self-maintained external relays K4 and K5, and will start the
motor.
Emergency stop Sequence
In case of an emergency stop situation, the two channel inputs of the
FF-SRS5935 emergency stop control module will open. This action
de-energizes the external safety relays K4 and K5, stopping the
motor. All other steps remain the same as described above (Stop Se-
quence).
232
• Industrial Safety Products •
FF-SR05936