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Chapter 12 Compliance with EMC Specifications
12.2 Requirements Complying with Low Voltage Direction
The low voltage direction requires a device that operates with AC50~1000V, DC 75 ~ 1500V to have proper safety.
The followings summarize the cautions for installing and wiring PLC of the ML200 series to comply with the low
voltage directions. The description is the data based on the applicable requirements and specifications as far as
we know but it does not mean that every system manufactured according to the description meets the following
specifications. The method and determination to comply with the EMC directions should be finally determined by
the system manufacturer self.
12.2.1 Specifications applicable to ML200 series
ML200 series follow the EN6100-1(safety of the device used in measurement/control lab).
ML200 series is developed in accordance with the above specifications, even for a module operating at the rated
voltage higher than AC50V/DC75V.
12.2.2 Selection of ML200 series PLC
(1) Power module
The power module of which rated input voltage is AC110/220V may have dangerous voltage (higher than
42.4V peak) inside it, so any CE mark compliance product is insulated between the primary and the
secondary.
(2) I/O module
The I/O module of which rated voltage is AC110/220V may have dangerous voltage (higher than 42.4V
peak) inside it, so any CE mark compliance product is insulated between the primary and the secondary.
The I/O module lower than DC24V is not applicable to the low voltage directions.
(3) CPU Module, Base unit
The modules use DC5V, 3.3V circuits, so they are not applicable to the low voltage directions.
(4) Special module, Communication module
The modules use the rated voltage less than DC 24V, so they are not applicable to the low voltage
directions.
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Pnet I/F Module 2MLL-PSRA, 2MLL-PMEA, 2MLL-PMEB User's Guide
Honeywell
R220
January 2019
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