3, 8, or 16 Axis SERCOS interface Module
5
Publication
1756-IN572E-EN-P – March 2004
Removing and Inserting Under Power (RIUP)
This module is designed so you can remove and insert it under backplane
power and field-side power.
Repeated electrical arcing causes wear to contacts on both the module and its
mating connector. Worn contacts may create electrical resistance that can
affect module operation.
This equipment is classified as open equipment and must be installed
(mounted) in an enclosure during operation as a means of providing safety
protection.
Determining the Power Requirements
This module receives power from the 1756 chassis power supply and requires
two sources of power: 760 mA at 5.1V and 2.5 mA at 24V from the
backplane. Add this current to the requirements of all other modules in this
chassis to prevent overloading the backplane power supply.
Identifying Module Components
The following diagrams provide two views of the module. The first diagram is
a front view which shows the position and function of the LEDs and the
icons for the receiver and transmitter. The second diagram is a side view
which shows the position of the transmitter and receiver connectors. (The
1756-M03SE and the 1756-M16SE look identical to the 1756-M08SE.)
WARNING
When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause
an explosion in hazardous location installations. Be sure
that power is removed or the area is nonhazardous
before proceeding.
Allen-Bradley PLCs