xxxii
Conformance to EC Directives
6
When switching a load with a high inrush current such as an incandescent
lamp, suppress the inrush current as shown below.
6-5
Conditions for Meeting EMC Directives when Using CP-series
Relay Expansion I/O Units
EN61131-2 immunity testing conditions when using the CP1W-40EDR,
CP1W-32ER, or CP1W-16ER with a CP1W-CN811 I/O Connecting Cable are
given below.
Recommended Ferrite Core
Ferrite Core (Data Line Filter): 0443-164151 manufactured by Nisshin Electric
Minimum impedance: 90
Ω
at 25 MHz, 160
Ω
at 100 MHz
Recommended Connection Method
1,2,3...
1.
Cable Connection Method
Yes
Yes
The varistor method prevents the impo-
sition of high voltage between the con-
tacts by using the constant voltage
characteristic of the varistor. There is
time lag between the moment the cir-
cuit is opened and the moment the load
is reset.
If the supply voltage is 24 or 48 V, insert
the varistor in parallel with the load. If
the supply voltage is 100 to 200 V,
insert the varistor between the con-
tacts.
---
Circuit
Current
Characteristic
Required element
AC
DC
Varistor method
Power
supply
Inductiv
e
load
OUT
COM
R
OUT
COM
R
Countermeasure 1
Providing a dark current of
approx. one-third of the rated
value through an incandescent
Countermeasure 2
Providing a limiting resistor
lamp
30
32
33
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......