IM 01C25R03-01E
2-3
2. HANDLING CAUTIONS
2.1.2 CSA Certification
a. CSA Explosionproof Type
Caution for CSA explosionproof type.
Note 1. Model EJX910A Multivariable transmitter
with optional code /CF1 is applicable for
use in hazardous locations:
[For CSA C22.2]
• Explosion-proof for Class I, Groups B, C and D.
• Dustignition-proof for Class II/III, Groups E, F and
G.
• Enclosure: TYPE 4X
• Temperature Code: T6...T4
[For CSA E60079]
• Flameproof for Zone 1, Ex d IIC T6...T4
• Enclosure: IP66 and IP67
• Maximum Process Temperature: 120
°
C (T4),
100
°
C (T5), 85
°
C (T6)
• Ambient Temperature: –50 to 75
°
C (T4), –50 to
80
°
C (T5), –50 to 72 õ (T6)
• Supply Voltage: 32 V dc max.
• Output Signal: 15 mA dc
Note 2. Wiring
• All wiring shall comply with Canadian Electrical
Code Part I and Local Electrical Codes.
• In hazardous location, wiring shall be in conduit as
shown in the figure.
• WARNING:
A SEAL SHALL BE INSTALLED WITHIN 50cm
OF THE ENCLOSURE.
UN SCELLEMENT DOIT ÊTRE INSTALLÉ À
MOINS DE 50cm DU BOÎTIER.
• WARNING:
WHEN INSTALLED IN CL.I, DIV 2, SEAL NOT
REQUIRED.
UNE FOIS INSTALLÉ DANS CL I, DIV 2,
AUCUN JOINT N'EST REQUIS.
Note 3. Operation
• WARNING:
AFTER DE-ENERGIZING, DELAY 5 MINUTES
BEFORE OPENING.
APRÉS POWER-OFF, ATTENDRE 5 MINUTES
AVANT D'OUVRIR.
• WARNING:
WHEN AMBIENT TEMPERATURE
≥
65
°
C,
USE THE HEAT-RESISTING CABLES
≥
90
°
C.
QUAND LA TEMPÉRATURE AMBIANTE
≥
65
°
C, UTILISEZ DES CÂBLES RÉSISTANTES Á
LA CHALEUR
≥
90
°
C.
• Take care not to generate mechanical sparking
when accessing to the instrument and peripheral
devices in a hazardous location.
FNICO Rules
The FNICO Concept allows the interconnection of
nonincendive field wiring apparatus to associated
nonincendive field wiring apparatus not specifically
examined in such combination. The criterion for such
interconnection is that the voltage (Vmax), the current
(Imax) and the power (Pmax) which nonincendive field
wiring apparatus can receive and remain nonincendive,
considering faults, must be equal or greater than the
voltage (Uo, Voc or Vt), the current (Io, Isc or It) and
the power (Po) which can be provided by the associ-
ated nonincendive field wiring apparatus (supply unit).
In addition the maximum unprotected residual capaci-
tance (Ci) and inductance (Li) of each apparatus (other
than terminators) connected to the Fieldbus must be
less than or equal to 5nF and 10uH respectively.
In each N.I. Fieldbus segment only one active source,
normally the associated nonincendive field wiring
apparatus, is allowed to provide the necessary power
for the Fieldbus system. The allowed voltage (Uo, Voc
or Vt) of the associated nonincendive field wiring
apparatus used to supply the bus cable must be limited
to the range 14Vdc to 17.5Vdc. All other equipment
connected to the bus cable has to be passive, meaning
that the apparatus is not allowed to provide energy to
the system, except a leakage current of 50É A for each
connected device. Separately powered equipment needs
galvanic isolation to ensure the nonincendive field
wiring Fieldbus circuit remains passive.
Cable
The cable used to interconnect the devices needs to
comply with the following parameters:
Loop resistance R': 15...150
Ω
/km
Inductance per unit length L': 0.4...1 mH/km
Capacitance per unit length C': 80....200 nF/km
C' =C' line/line+0.5 C' line/screen, if both lines are
floating or C' = C' line/line + C'line/screen, if
thescreen is connected to one line.
Length of spur cable: max. 30 m
Length of trunk cable: max. 1 km
Length of splice: max = 1 m
Terminators
At the end of each trunk cable an FM Approved line
terminator with the following parameters is suitable:
R= 90...100
Ω
C = 0 ....2.2 uF
