Wiring I/O Devices - Omron NE1A-SCPU01 - 07-2009 Operation Manual

Wiring
3-2-3

Wiring I/O Devices

Wiring Input Devices
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.
50
Refer to the following information for input device selection and wiring.
■ 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
24 VDC
OSSDx
24 VDC
GND
!WARNING
V1
Tx
NE1A-series
Controller
INx
24 VDC
G1
V1
Tx
NE1A-series
Controller
INx
G1
Section 3-2