Lenze E82xVxxxKxxxxx - Manual (Page 501)

Safety engineering
Functional test
Monitoring the safety function with a PLC
14
l
501 EDS82EV903 EN 3.0
Example: Parameterising a digital output
In the following we will show you a possibility of parameterising a digital output, so that
a conclusion with regard to the motor current is provided.
Sequence Parameter Comment
1. Configure the input signal of digital
output A1:
Link DIGOUT to internal status signal
DCTRL1−IMOT<ILIM C0415/2 = 20
2. Set current threshold I
lim
: I
motor
< I
lim
® A1 = HIGH
I
motor
³I
lim
®A1 = LOW
Set the current threshold to 2 % C0156 = 2
Functional test within the inspection interval
For the functional test, check both disconnecting paths separately.
1st disconnecting path: pulse inhibit via safety relay K
SR
The individual tests are passed if the correct states given in the table result.
Individual test
Specification Correct status
Relay control input (X3.1/34) Feedback output (X3.1/K31)
Pulse inhibit LOW HIGH
Pulse enable HIGH LOW
2nd disconnecting path: controller inihibit
Requirement for the test:
ƒ "Automatic DC injection brake" function deactivated (C0019 = 0.00)
ƒ "Quick stop" function (QSP) deactivated
ƒ Pulses enabled by safety relay K
SR
(X3.1/34 = HIGH)
The individual tests are passed if the correct states given in the table result.
Individual test
Specification Correct status
Controller inhibit (28) Setpoint Digital output (Ax)
Controller inhibit LOW
nset ³I
lim
HIGH
Controller enable HIGH LOW
Functional test not passed
If an individual test results in an impermissible status, the functional test is not passed.
ƒ The drive or machine has to be shut down immediately.
ƒ Commissioning is not permitted until the safety function operates correctly.