Omron NE1A Series Manual page 41

Wiring
Serious injury may possibly occur due to loss of required safety functions. Use appropri-
ate components or devices according to the requirements given in the following table.
Controlling devices
Emergency stop switch
Door interlocking switch or
limit switch
Safety sensor
42
Devices with Mechanical Contact Outputs
Examples: Emergency stop buttons and safety limit switches
These devices use both a safety input terminal and test output terminal. A
safety input terminal inputs the test output signal (pulse output) of the NE1A-
series Controller via a contact output device.
4.5 mA typical
Minimum applicable load:
4 mA, 24 VAC
Devices with PNP Semiconductor Outputs (Current Sourcing)
Example: Light curtains
A PNP semiconductor output signal from this type of device is input to the
NE1A-series Controller's safety input terminal.
4.5 mA typical
V1
24 VDC Tx
OSSDx INx
24 VDC
GND
G1
!WARNING
Use approved devices with a direct opening mechanism compliant with IEC/
EN 60947-5-1.
Use approved devices with a direct opening mechanism compliant with IEC/
EN 60947-5-1 and capable of switching micro-loads of 4 mA at 24 VDC.
Use approved devices compliant with the relevant product standards, regula-
tions, and rules in the country where they are used.
V1
Tx
NE1A-series
Controller
INx
24 VDC
G1
NE1A-series
Controller
Requirements
Section 3-2