C200H-CN221 Omron, C200H-CN221 Datasheet - Page 72
C200H-CN221
Manufacturer Part Number
C200H-CN221
Description
C200H I/O CABLE, 2M (COO)
Manufacturer
Omron
Datasheet
1.C200H-CN211.pdf
(172 pages)
Specifications of C200H-CN221
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 72 of 172
- Download datasheet (2Mb)
Inductive Load Surge
Suppressor
Electrical Noise
58
Wiring
When an inductive load is connected to an I/O Unit, it is necessary to connect a
surge suppressor or diode in parallel with the load as shown below. This is so
that the back EMF generated by the load will be absorbed.
Be sure to take appropriate measures when any electrical device likely to pro-
duce noise is connected to the PC as a load. Devices generating noise of more
than 1,200 V (such as electromagnetic relays and valves) require noise sup-
pression. For noise sources running off of AC power, connect a diode in parallel
with the coil of each device.
When mounting a CPU Rack and an Expansion I/O Rack together on a mounting
plate, be sure to provide a solid ground the mounting plate. The mounting plate
must be plated with a highly conductive surface in order to ensure noise immu-
nity.
Relay Output Unit
Transistor Output Unit
Relay Output Unit
Triac Output Unit
OUT
COM
OUT
COM
Surge suppressor
L
Diode
L
Section
+
7-2
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