Unitronics Industrial Automation Systems
1
EX-A1
I/O Expansion Module Adapter
The EX-A1 interfaces between a variety of
I/O expansion modules and specific
Unitronics’ OPLCs.
A single adapter can be connected to up to
8 expansion modules.
The EX-A1 may either be snap-mounted
on a DIN rail, or screw-mounted onto a
mounting plate.
Component identification
1 Status
indicators
2
OPLC to EX-A1 connection port
3
Power supply connection points
4
EX-A1 to expansion module
connection port
2
1
2
3
4
User safety and equipment protection guidelines
This document is intended to aid trained and competent personnel in the installation of this equipment as defined
by the European directives for machinery, low voltage and EMC. Only a technician or engineer trained in the local
and national electrical standards should perform tasks associated with the electrical wiring of this device.
Under no circumstances will Unitronics be liable or responsible for any consequential damage that may
arise as a result of installation or use of this equipment, and is not responsible for problems resulting from
improper or irresponsible use of this device.
All examples and diagrams shown in the manual are intended to aid understanding. They do not
guarantee operation.
Unitronics accepts no responsibility for actual use of this product based on these examples.
Only qualified service personnel should open this device or carry out repairs.
Please dispose of this product in accordance with local and national standards and regulations.
Check the user program before running it.
Do not attempt to use this device with voltage exceeding permissible levels.
Install an external circuit breaker and take all appropriate safety measures against short-
circuiting in external wiring.
Failure to comply with appropriate safety guidelines can result in severe personal injury or
property damage. Always exercise proper caution when working with electrical equipment.
