<5. Wiring>
40
IM 01C25A01-01E
5. Wiring
NOTE
For F
OUNDATION
Fieldbus, PROFIBUS PA, and Mod
bus communication types, please refer to each
communication manual.
5.1 Wiring Precautions
IMPORTANT
• Lay wiring as far as possible from electrical noise
sources such as large capacity transformers,
motors, and power supplies.
• Remove electrical connection dust cap before
wiring.
• All threaded parts must be treated with
waterproofing sealant. (A non-hardening silicone
group sealant is recommended.)
• To prevent noise pickup, do not pass signal and
power cables through the same ducts.
• Explosion-protected instruments must be wired
in accordance with specific requirements (and,
in certain countries, legal regulations) in order
to preserve the effectiveness of their explosion-
protected features.
• The terminal box cover is locked by an Allen head
bolt (a shrouding bolt) on ATEX flameproof type
transmitters. When the shrouding bolt is driven
clockwise using an Allen wrench, it gose in. The
cover lock can then be released and the cover can
be opened by hand.
When a cover is closed it should be locked by a
shrouding bolt without fail. Tighten the shrouding
bolt to a torque of 0.7 N·m.
Shrouding Bolt
Shrouding Bolt
F0501.ai
Figure 5.1
Shrouding Bolt
• Plug and seal an unused conduit connection.
5.2 Connections of External
Wiring to Terminal Box
F0527.ai
RTD cable connection*
● Terminal Configuration
1
Terminal
2
Terminal
3
Terminal [A]
[B]*
*For EJX9
A only.
4
Terminal
Power supply and output terminals
External indicator (ammeter) terminals
*1*2
or
Status contact output terminals
*2
(when /AL is specified)
● Terminal Wiring for 4 to 20 mA output
SUPPLY
CHECK
or
ALARM
+
–
+
–
+
–
Ground terminal
1
2
2
2
3
3
F0528.ai
SUPPLY
VOUT
+
–
+
–
● Terminal Wiring for 1 to 5 V output
Ground terminal
Power supply terminals
1 to 5 V DC with HART communication
terminals
1
2
2
3
*1: When using an external indicator or check meter, the
internal resistance must be 10 Ω or less. A check meter
or indicator cannot be connected when /AL option is
specified.
*2: Not available for F
OUNDATION
Fieldbus and PROFIBUS
PA communication types.
SUPPLY
CHECK
PULSE
+
–
*1: When using an external indicator or check meter, the
internal resistance must be 10Ω or less.
*2: Not available for F
OUNDATION
Fieldbus communication
type.
+
–
+
–
● Terminal Wiring for 4 to 20 mA output
[EJX9
A]
Ground terminal
Power supply and output terminals
External indicator (ammeter) terminals
*1*2
Pulse or status contact output terminals
*2
1
2
2
3
2
4
Figure 5.2
Terminal
