Lenze E94P PositionServo with MVOB - Manual (Page 30)

28 L S94H201E_13426446_EN
Interface
Evaluation and Testing of the ISO 13849-1 Safety Circuit
As part of the regulations for ISO 13849-1 safety circuit provision must be made for the user to periodically
test the safety circuits and that testing should be capable of identifying a single fault. The PositionServo
drive uses the safety status output (Pin 3) in conjunction with the display of the drive to allow the testing of
the safety circuits.
The safety status output becomes active to indicate partial or full enable of the safety input circuits 1 and
2. If safety input 1 or safety input 2 or both inputs are on then the safety status output will become active.
The safety status output must be connected to some visible indication for the operator to reference during
test of the circuit.
As well as being used to test the correct operation of the safety circuits the safety status output can be used
as an indicator that the drive has been placed in the fully shut down condition (all safety circuits off). For
example, if both Safety Inputs have been Deactivated, the Safety Status is also Deactivated. If one of the
Safety Inputs signals failed to call for a shutdown, or if one of the Safety Circuits failed to shut down, the
Safety Status signal remains Asserted to alert the operator to the problem.
The procedure for testing the ISO 13849-1 safety circuit and the identification of a single fault on the system
is given below. The safety status output should be connected to a visible indicator (such as a lamp or LED)
so the operator can interpret its condition.
NOTE
Customer must size load so as not to pull more than 100mA.
Safety Status Output Indication
Pin Name Function
P1
P2
P3
P4
P5
P6
Safety Output
Status Indication
+ -
External
+24VDC
Safety Circuit
Input 1
Safety Circuit
Input 2
1 Bypass Voltage ISO 13849-1 Bypass Voltage (+24VDC)
2 Bypass COM ISO 13849-1 Bypass Common
3 Safety Status ISO 13849-1 Safety Status *100mA max
4 Safety Input1 ISO 13849-1 Safety Input 1 (+24VDC to Enable)
5 Safety COM ISO 13849-1 Safety Common
6 Safety Input2 ISO 13849-1 Safety Input 2 (+24VDC to Enable)
Setting up the Drive in a Maintenance Mode:
WARNING!
During test of the ISO 13849-1 circuit, as laid out in this documentation the drive will
go to run (enabled) condition and motion from the motor may be generated. It is the
responsibility of the system designer to ensure the system remains in a safe condition
during the enclosed maintenance procedure.