External Device Monitor Function - Panasonic SF2B Series Instruction Manual

3-5 External Device Monitor Function

This function is available when the bottom cap cable SF2B-CCB□ or SF2B-CB□ (optional) is
used.
It is the function for checking whether the external safety relay connected to the control out-
put (OSSD 1 / 2) performs normally in accordance with the control output (OSSD 1 / 2) or not.
Monitor the contacting point 'b' of the external safety relay, and if any error such as deposit of
the contacting point, etc. is detected, change the status of the device into lockout one, and turn
OFF the control output (OSSD 1 / 2).
● When the external device monitor function is set to be valid:
Connect the external device monitor input line to the contacting point "b"of external safety re-
lay connected the control output (OSSD 1 / 2).
● When the external device monitor function is set to be invalid:
Connect the external device monitor input line to the auxiliary output line.
Refer to "2-5 Wiring" for details of the connecting method.
<Timing chart (Normal)>
Light
Light received
received
Light
status
blocked
ON
Control output
(OSSD 1 / 2)
OFF
External device ON
monitor input
OFF
The setting time of the device monitor is 300ms or less. Exceeding 300ms turns the device into
lockout status.
<Timing chart (Error 1)>
Light
Light received
received
Light
status
blocked
ON
Control output
(OSSD 1 / 2)
OFF
External device
ON
monitor input
OFF
<Timing chart (Error 2)>
Light
Light received
received
Light
status
blocked
ON
Control output
(OSSD 1 / 2)
OFF
ON
External device
monitor input
OFF
60
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15ms or less
300ms or less
15ms or less
300ms
40 to 60ms
300ms
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
40 to 60ms
300ms or less
Lockout state
Lockout state