SDKELI BLPS-D3L - Sensor and SP Controller Used Together

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 ST controller
Fig.2.3 Interface circuit of ST
Signal label
Meaning of signal
Wiring
A1/A2/PE
Power input
Connect to the right power supply
according to the rated voltage
CG
Reference high- level signal output of
the controller
Provide high level voltage for external
relay contacts
BS1/BS2
Gearshift signal of the bender
Connect to the NO contacts of the relay
which controls the slow down stroke of
the bender
OSSDs
Output signal of the sensor
Connect to the controller
13/14，23/24
OSSD output signal in the form of
relay output signal
Connect to the circuit which controls the
fast down stroke of the bender
ALM/0V
Alarm output signal in the form of
PNP
Connect the alarm
2.2 Function declaration
2.2.1 Self-test function
BLPS performs the self-test when power is turned ON to check for errors.
If an error is found in the self-test, BLPS enters fault state, keeps the OSSDs on OFF-state,
and indicates the error at the same time.
Self-Test detailed description
Types of errors to be detected
Emitter
Receiver
Broken or short-circuited of the
cable
○
●
Failure of safety output circuit
○
●
Internal circuit failure
○
●
Note:● possessed；○ not possessed