YOKOGAWA EXAxt 450 User Manual

10
IM 12D06D05-01E
3-3-5. Grounding the housing
Forthesafetyoftheuserandtoprotectthe
instrument against interference, the housing
must always be connected to ground. This has
to be done by a large area conductor. This
cable can be fixed to the rear of the housing or
by using the internal ground connections using
abraidedwirecable.Seefigure3-8.
The minimum cross sectional area of the pro-
tective grounding wire should be 0.75 mm
2
.
3-3-6. Switching on the instrument
After all connections are made and checked,
the power can be switched on from the power
supply.MakesuretheLCDdisplaycomeson.
After a brief interval, the display will change to
the measured value. If errors are displayed or
a valid measured value is not shown, consult
the troubleshooting section (Chapter 8) before
calling Yokogawa.
DANGER
Figure 3-7. Input and output connections
63 66 65 61 22 21 12 16 15
- + - +
mA OUTPUTS
62 11 17
TEMPmA2
SHLD
CONTACT SENSOR(S)
REFER TO INSTRUCTION MANUAL FOR CONNECTIONS
ISC
mA1
(+HART)
14
COILS
RECEIVE DRIVESHLD
+ -
13
32 31 33 42 41 43 52 51 53 72 71 73
NC C NO NC C NO NC C NO NO C NC
S1 S2 S3CONTACTS S4
250V / 5A
AC / DC
100VA / 50W
(fail-safe)
2 1
- +
DC
POWER
12-24 V /10 W
FUSE: 2A/250 VAC/T
2 1
N L
AC
POWER
100-240 VAC/15 VA/ 50/60Hz
FUSE: 500 mA/250 VAC/T
Fusereplacementshouldbeperformedonlyby
a qualified service person.
SeeSec.7.MAINTENANCE,Fuse.
Fuse ratings:
Powersupply Fusetype
12-24VDC,10Wmax 2A/250V,Slow
100-240VAC,15VAmax 0.5A/250V,Slow
3-3-2. Access to terminal and cable entry
Terminals 1 and 2 are used for the power sup-
ply.Guidethepowercablesthroughthegland
closed to the power supply terminals. The ter-
minals will accept wires of 2.5 mm
2
(14AWG).
Always use cable finishings if possible.
WARNING
3-3-3. AC power
ConnectterminalLtothephaselineofthe
ACpowerandterminalNtothezeroline.See
figure 3-8 for the power ground.
3-3-4. DC power
Connect terminal 1 to the positive outlet and
terminal 2 to the negative outlet.
The size of conductors should be at least 1.25
mm
2
. The overall cable diameter should be
between7&12mm.

YOKOGAWA EXAxt 450 Specifications

General

Brand	YOKOGAWA
Model	EXAxt 450
Category	Media Converter
Language	English