<1. Handling Precautions>
1-3
IM 21B03D01-01E
To preserve the safety of flameproof equipment
requires great care during mounting, wiring, and
piping. Safety requirements also place restrictions
on maintenance and repair activities. Users
absolutely must read the following instructions and
“Installation and Operating Precautions for TIIS
Intrinsically Safe Equipment (EX - A03E)” at the end
of this manual.
1. Installation
The PK200 Current-to-Pneumatic Converter
should be used in connection with the certified
safety barrier as shown below. All wiring shall
comply with local installation requirements.
Hazardous Area
Non-hazardous Area
+
–
+
–
+
–
PK200 Current-to-
Pneumatic Converter
Safety barrier
[Installation Diagram]
F0105.ai
2. Temperature
Install the PK200, So that any part of
the instrument that may exposed to the
inflammable gas or vapor would not exceed the
temperature 60°C
3. Safety Barrier
Use the certified safety barrier that satisfies the
following requirements.
• Safety Ratings
Maximum output voltage: 28V or less
Maximum output current: 94.3mA or less
Maximum output power: 0.66W or less
• Protection type and group
Protection type: ia Group: IIC
• Allowable inductance and capacitance
Maximum_external inductance:
More than the external wiring inductance
Maximum_external capacitance:
More than the sum of the external wiring
capacitance and 39nF
Table 1.1
Recommended Safety Barrier
Contact each supplier for the details of the barrier.
Supplier
Type
Model
MTL
Isolated type
MTL5046
P+F
Isolated type
KFD2-SCD-Ex1.LK*
* To connect this barrier with PK200 converter, for the
connection between the barrier and the controller, use the
terminal #7 and #9 of the barrier.
1.6 Installation of Flameproof
Type
1.6.1 TIIS Flameproof Type
The model PK200/JF3 current-to-pneumatic
converters, which have obtained certification
according to technical criteria for explosion-
protected construction of electric machinery and
equipment (Standards Notification No.556 from
the Japanese Ministry of Labor) conforming to IEC
standards, is designed for hazardous areas where
explosive gases and/or inflammable vapors may be
present. (This allows installation in Division 1 and 2
areas)
To preserve the safety of flameproof equipment
requires great care during mounting, wiring, and
piping. Safety requirements also place restrictions
on maintenance and repair activities. Users
absolutely must read “Installation and Operating
Precautions for TIIS Flameproof Equipment (EX-
B03E)” at the end of this manual.
1.6.2 FM Explosionproof Type
Following items are described in the instruction
documents of this instrument to ensure certified
explosionproof properties.
1. PK200 Current to Pneumatic Converter is
applicable for use in hazardous areas;
* Explosionproof for Class I, Division 1, Groups
B, C and D.
* Dust ignitionproof for Class I/II, Division 1,
Groups E, F and G.
* Outdoor hazardous locations, NEMA 4X.
2. Wiring
* All wiring shall comply with National Electrical
Code ANSI/NEPA70 and Local Electrical
Codes.
* When installed in Division 1, “FACTORY
SEALED, CONDUIT SEAL NOT REQUIRED”.
However, in case of installing a sealing fitting
(option) for waterproof or other purposes, see
4.2.2(6).
3. Operation
* WARNING: OPEN CIRCUIT BEFORE
REMOVING COVER.
FACTORY SEALED, CONDUIT
SEAL NOT REQUIRED.
INSTALL IN ACCORDANCE WITH
THE INSTRUCTION MANUAL
IM 21B3D1-01E
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