13433283_P94MI01D_EN
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Technical Data
STOP!
This is only partial information on the ISO 13849-1 Safety Circuit. BEFORE using P8, read the COMPLETE DETAILED INSTRUCTIONS
for the ISO 13849-1 Safety Circuit in Section 4.1.8 of manual S94H201 (PositionServo Users Manual on the accompanying
CD and www.lenzeamericas.com).
Due to ISO 13849-1 regulations, a se24VDC external dedicated safety power supply must be provided to
the drive Safety circuits. The 24V supply is intended for bypass purposes only and must not be used as the
control voltage to these circuits.
Installation and Connection
Connection of Two Safety Circuits with Ex24V Supply
Pin
Name
Function
+
P1
P2
P3
P4
P5
P6
-
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)
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 Output Status 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)
