Power supply requirements, Understand compliance to european union directives, Suppression – Rockwell Automation 1771-OD16 AC (120V) ISO Output Installation Instructions User Manual
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AC (120V) Isolated Output Module, 16 Outputs
2
Publication 1771Ć5.21 -February 1997
This module can be used in all 1771 I/O chassis except the 1771-A1,
-A2 or -A4 chassis. It may also be used in a 1771-AM1 or
1771-AM2 chassis.This module is not compatible with the 1771-AL
local I/O adapter module.
Suppression
Surge suppression circuitry is provided for the output triacs in this
module. To suppress high-voltage transients from the AC line, a
metal-oxide varistor (MOV) is provided between each set of
terminals on the module. In each output circuit an RC network
limits the magnitude of voltage transients that may occur when a
device is wired in parallel or series with hard contacts.
Loads with inductive characteristics may require additional
suppression devices. The impedance characteristic of the load is the
most important factor in selecting a suppression device; thus no
single suppression device can be recommended for every possible
load. Acceptable suppression devices for typical loads are shown in
the table below.
AllenĆBradley Equipment
Suppressor Catalog Number
Motor Starter Bulletin 509
599ĆK04
1
Motor Starter Bulletin 709
1401ĆN10
1
Relay Bulletin 700 Type N or P
700N5/700N9
Miscellaneous
700ĆN24
2
1
For starters with 120V AC coils
2
Bulletin 700ĆN24 is a universal surge suppressor. You can use it on electromagnetic devices with the limitation of
35 sealed VA, 150V.
The isolated output module is powered by the power supply
connected to the I/O chassis backplane. The module requires a
maximum current of 250mA from the +5V dc output of this supply.
Total the current requirements of this module with the other modules
in the I/O chassis to avoid overloading the supply or the I/O chassis
backplane.
If this product has the CE mark it is approved for installation within
the European Union and EEA regions. It has been designed and
tested to meet the following directives.
Power Supply
Requirements
Understand Compliance to
European Union Directives