YOKOGAWA EJX Series User Manual

  <5.Wiring>
30
IM01C25A01-01E
5.2.5 ExternalTemperatureConnection
(forEJX910AandEJX930A)
ConnecttheRTDcableassemblytotheJuckTerminal.
F0505.ai
SUPPLY
PULSE
CHECK
ALARM
Figure5.5 ExternalTemperatureConnection
5.3 Wiring
5.3.1 LoopConguration
SincetheDPharpusesatwo-wiretransmissionsystem,
signalwiringisalsousedaspowerwiring.
DCpowerisrequiredforthetransmitterloop.The
transmitteranddistributorareconnectedasshownbelow.
Fordetailsofthepowersupplyvoltageandload
resistance,seeSection5.6.
(1) General-useTypeandFlameproofType
• AnalogOutput
Hazardous Location Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
F0506.ai
SUPPLY
PULSE
CHECK
ALARM
Figure5.6 ConnectionbetweenTransmitterand
Distributor
• PulseoutputandAlarm,StatusOutputor
SimultaneousAnalog-PulseOutput
(forEJX910AandEJX930A)
SUPPLY
PULSE
CHECK
ALARM
Hazardous Location Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
Receiver
instrument
F0507.ai
Figure5.7 ConnectionbetweenTransmitterand
Distributor
(2) IntrinsicallySafeType
Withtheintrinsicallysafetype,asafetybarriermustbe
includedintheloop.
Hazardous Location Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
Safety barrier
F0508.ai
SUPPLY
PULSE
CHECK
ALARM
Figure5.8 ConnectionbetweenTransmitterand
Distributor
(3) IntrinsicallySafeType(forEJX910Aand
EJX930A)
• AnalogOutput
SUPPLY
PULSE
CHECK
ALARM
Hazardous Location Nonhazardous Location
Transmitter terminal box
Receiver instrument
(and power supply)
Safety barreir
(Isolation type)
F0509.ai
Anaolg input
Power
supply
• SimultaneousAnalog-PulseOutput
SUPPLY
PULSE
CHECK
ALARM
Hazardous Location Nonhazardous Location
Transmitter terminal box
Safety barrier
(Isolated type)
I/O module
F0510.ai
Safety barrier
(Isolated type)
Power
supply
Power
supply
Analog input
Pulse input
Figure5.9 ConnectionbetweenTransmitter,
barrierandreceiver

YOKOGAWA EJX Series Specifications

General

Brand	YOKOGAWA
Model	EJX Series
Category	Transmitter
Language	English